Nice work! Start studying Shoulder Joint - Origin, Insertion, Action, Innervation. Origin = iliac Insertion = tendon of psoas . ... one elbow in 65 ° of flexion for perineal hygiene. Anterior Deltoid Origin: Anterior border of the lateral third of the clavicle Insertion: The deltoid tuberosity on the lateral surface of the proximal humeral shaf Actions: Flexion and internal rotation of the arm at the shoulder 3. Study Muscles: Action, Origin, Insertion, Nerve Innervation flashcards from nick poulos's class online, or in Brainscape's iPhone or Android app. Origin: Ischial tuberosity. The origin refers to the proximal attachment site that remains relatively fixed during contraction. Medial epicondyle of humerus, ulna and radius. The muscles of the shoulder are associated with movements of the upper limb. Origin: Medial supracondylar ridge of the humerus & medial side of the coronoid process of the ulna. The muscles that move the forearm and wrist (see Figure 4.29, 4.10) gen-erally have their origins in the humerus (except for biceps brachii and the triceps brachii) and cross the elbow and/or wrist joint. Muscle origin is a term referring to one end of a muscle, generally at the location where it attaches to a bone. The main part of the muscle called the belly of the muscle, then crosses over the gap between this bone and another usually adjacent bone - to attach there. rotates (in. Median Flexor Pollicis Longus. adduction. The scapula provides attachment to several groups of muscles. Origin: Clavicular head - medial half of clavicle, sternal head - sternum, cartilages of upper 6 ribs. Supraspinatus . the nerve runs between these muscles. The scapula forms the posterior of the shoulder girdle. Shoulder, and find the following muscles. origin. Muscles That Move the Forearm and Wrist. It is located in the front of the upper arm and attaches to the glenoid fossa, or "socket" part of the shoulder joint. Most skeletal muscle is attached to bone on its ends by way of what we call tendons. The biceps muscle has two heads, the short head and the long head, distinguished according to their origin at the coracoid process and supraglenoid tubercle of the scapula, respectively. Teres Major: Innervated by: Axillary n. of the brachial plexus Origin: dorsal part of the caudal scapula Insertion: teres tuberosity midway down humerus The horizontal shoulder adduction muscles mnemonic is PABC as well, just like shoulder flexion. Three are flat, the external oblique, the internal oblique and the transversus abdominis, and one is a straplike muscle, the rectus abdominis.The fibers in each of these muscles run in a cross direction from one another in a way that maximizes the strength of the three muscles together (think of plywood). The Sartorius is a two-joint muscle and so is weak when the knee is flexed and the hip is flexed at the same time. Splenius Capitis. As the muscles contract, they exert force on the bones, which help to … Origin. Action: Adduction, horizontal adduction, medial/internal rotation of humerus, flexion, and extension of humerus from a flexed position Sternal head- sternum, cartilages of first 6 ribs Adductor pollicis muscle (Musculus adductor pollicis) Adductor pollicis is a triangular intrinsic muscle of the hand.It belongs to a group called thenar muscles, along with abductor pollicis, flexor pollicis brevis, and opponens pollicis.Thenar muscles are located on the radial (lateral) aspect of the hand where they form an elevation named the thenar eminence. Start studying Shoulder muscles origin & insertion. Action: - flexion (STRONGEST MOVER), internal (medial rotation) (SECONDARY MOVER), horizontal adduction of the humerus, and abduction of the humerus (a few fibers). There are several different types of movements, including flexion, extension, hyperextension, abduction, adduction, and circumduction to name a few. It works better during single movements. The origin of a muscle is the bone, typically proximal, which has greater mass and is more stable during a contraction than a muscle's insertion. The anterior thoracic muscles are the subclavius, pectoralis minor, and the serratus anterior. Flexion 3. Insertion: Less tubercle of the humerus. For example, with the latissimus dorsi muscle, the origin site is the torso, and the insertion is the arm. The most notable and clinically important are the rotator cuff muscles. The PABC of horizontal shoulder adduction stands for: pec major, anterior deltoid, biceps brachii short head, coracobrachialis. Muscles of the shoulder and upper limb can be divided into four groups: muscles that stabilize and position the pectoral girdle, muscles that move the arm, muscles that move the forearm, and muscles that move the wrists, hands, and fingers. • Origin: Anterior-superior spine of the ilium • Insertion: Anterior medial condyle of the tibia (behind the medial condyle) • Action: • Flexion of hip • External rotation of the hip • Abduction Sartorius • The insertion refers to the muscle’s distal attachment site to a moveable bone. Clavicular head- medial half of clavicle . O: Coracoid process & Humerus. Biceps brachii m. Supraglenoid Tubercle Radial Tuberosity; ecr m Musculocutane ous n. Extends shoulder Flexes elbow Stabilizes carpus 2. They produce the characteristic shape of the shoulder, and can be divided into two groups: Extrinsic – originate from the torso, and attach to the bones of the shoulder ( clavicle , scapula or humerus ). Supraspinatus. Movements Of The Shoulder: The muscles of the shoulder enable it to perform a number of movements. Origin: Entire under surface of the scapula (subscapular fossea). Innervation:Suprascapular n. of the brachial plexus Origin: Supraspinous fossa of the scapula Insertion: Lesser and greater tubercles of the humerus Action: Extends and braces the shoulder. Insertion: Lateral lip of intertubercular (bicipital) groove of humerus. Selecting this icon allows you to read the muscle’s definition. The shoulder joint is a synovial ball and socket joint and allows for a wide range of movements such as flexion, extension, abduction, adduction, medial and lateral rotation and circumduction (R. Seele y, C. VanPutte, J. Regan, and A. Russo, 2011, p. 260). Psoas Major . The origin, insertion, and action of individual groups of spinal muscles are listed in Table 4.5. Insertion: Mastoid and line extending medially; . Their main function is to stabilise the shoulder joint and allow its excessive range of motion. The biceps brachii muscle splits into two tendons at the shoulder: the long head and the short head. Muscles That Position the Pectoral Girdle. Origin: short head - corocoid process of scapula, long head - supraglenoid tubercle of scapula; Insertion: radius; Action: supination of lower arm, flexion of shoulder and elbow Flexor Carpi Ulnaris Origin: medial epicondyle of humerus; Insertion: 5th metacrapal; Action: wrist flexion and adduction What movement. • Action – scapular elevation 20 21. sup. Teres Major: Innervated by: Axillary n. of the brachial plexus Origin: dorsal part of the caudal scapula Insertion: teres tuberosity midway down humerus -Innervation: Accessory (XI) Nerve. When the rhomboids are contracted, your scapula moves medially, which can pull the shoulder and upper limb posteriorly. posterior cord of the brachial plexus. Notice that the difference between PABC for shoulder flexion and horizontal shoulder adduction joint movement is the clavicle. Biology. Select View 11. The flashcards below were created by user LittJenjen1 on FreezingBlue Flashcards . Muscle Name. -Action: Scapular Elevation. The spinal muscles located in the neck have been previously dis-cussed. Infraspinatus. Its insertion is on the lesser tubercle of the humerous. It is a sturdy, flat, triangular bone. Origin: Occipital bone and spinous processes of thoracic vertebrae. Action . Arterial (Blood) Supply of Rotatores Muscular branches of the aorta. The anterior muscles include the subclavius, pectoralis minor, and serratus anterior. Origin and Insertion. Actions: Hip extension. Source: www.muscleseek.com. They insert onto the anteromedial surface of the humeral shaft, between the brachialis muscle and the medial head of triceps. MUSCLES OF THE ARM Muscle Origin Insertion Innervation Action 1. origin: anterior inferior iliac spine, superior margin of acetabulum; insertion: tibial tuberosity (via patellar tendon) actions: hip flexion, knee flexion Biceps brachii is one of the main muscles of the upper arm which acts on both the shoulder joint and the elbow joint. More precisely, it is situated medial to the lateral deltoid and lateral to the clavicular head of the pectoralis major. Scapulothoracic Muscles Those muscles that affect the movement of scapula and clavicle on the thorax. PLAY. Origin of Rotatores Transverse process. Pectoralis major 2. Insertion: Olecranon of ulna. Nov 18, 2015 - Explore Natalia Orrego's board "muscles- origins/ insertion & actions" on Pinterest. Hip flexion . Origin: C7 spine and spines of upper thoracic vertebrae;. Actions: Flexion of the hip. The anterior deltoid is involved in shoulder abducted when the shoulder is externally rotated. The pectoral girdle, or shoulder girdle, consists of the lateral ends of the clavicle and scapula, along with the proximal end of the humerus, and the muscles covering these three bones to stabilize the shoulder joint. Diagnostic Injections. -Insertion: posterior border of the lateral 1/3 of the clavicle. Aug 24, 2015 - muscles of forearm origin and insertion - Google 검색 Insertion of Rotatores Junction of transverse process and lamina, spinous process. abducts) the shoulders - Stabilises scapula by drawing it inferiorly and anteriorly Pectoralis minor. Origin: Deep surface of the scapula 3. Chronically tight hamstrings are often a contributory factor to lower back pain and knee pain. The long head of the biceps muscle assists other muscles with shoulder flexion. Muscles that Move the Abdominal Wall. Anterior Deltoid: Location, Function, Origin, Insertion The anterior division , also known as the anterior deltoid , is located on the front of your shoulder just above the chest muscles. 61 Shoulder Joint Muscles Deltoid Origin: Acromion & spine of scapula, clavicle Insertion: Detloid tuberosity of humerus Action: Abducts, flexes, extends (horiz.) Most skeletal muscle is attached to bone on its ends by way of what we call tendons. • Origin: Medial clavicle, sternum, ribs 1-7 • Insertion: Bicipital groove • Actions: Whole muscle: Shoulder adduction, shoulder internal rotation; Clavicular head: shoulder flexion, shoulder abduction; Sternocostal head: Shoulder extension • Innervation: Lateral pectoral nerve=clavicular part; Medial pectoral nerve=sternalcostal part • Spinal level: C 5-8, T 1 Four muscles contribute to the abdominal wall. Levator scapulae muscle (Musculus levator scapulae) Levator scapulae is a long and slender muscle that anatomically belongs to the superficial layer of extrinsic muscles of the back.Functionally, however, it is considered to be a muscle of scapular motion along with the rhomboids, serratus anterior, serratus posterior superior and inferior muscles. Rotation Action: Elevation, superior rotation, inferior rotation, and depression of scapula. Insertion: Greater tubercle of the humerus (proximal half of humerus) Action: Flexes, adducts, and medially rotates the arm. Insertion: Deltoid tuberosity on lateral humerus. Origin: Surface of the middle ribs. Origin: Spinous processes of lower thoracic vertebrae, … Learn vocabulary, terms, and more with flashcards, games, and other study tools. Origin and Insertion Upper Extremity. You just studied 66 terms! Middle phalanges of digits 2-5. Insertion: the superior facet of the greater tubercle of the humerus Insertion: Coracoid … body Of sternum, aponeurosis Of external oblique, upper 7 costal cartilages (not always 1st or 7th) Insertion: Manubrial fibres to intermediate on: lamina. Latissimus dorsi is a very large muscle … 1. The intrinsic muscles of the scapula include the rotator cuff muscles, teres major, subscapularis, teres minor, and infraspinatus. Shoulder Muscles: Origin, Insertion, Nerve Supply & Action Shoulder Girdle Muscle: The shoulder girdle is also known as the pectoral girdle. Semimembranosus is the most medial of the three hamstring muscles. The origin and insertion refer to the anatomic locations of where a muscle attaches (usually a bone). There are a number of muscles that act to move the shoulder joint. & out.) Origin: anchors on the anterior lateral 3rd of the clavicle. brachioradialis). Knee flexion. Muscles that move the forearm - primary movement occurs at elbow joint. The shoulder muscles produce the characteristic shape of the shoulder and can be classified into two groups: Extrinsic shoulder muscles – arise from the torso, and inserts to the clavicle, scapula or humerus). Insertion: Anterior part of the medial condyle of the tibia. The muscles that position and stabilize the pectoral girdle are located on the thorax. • Origin: head and upper 2/3 of the outer surface of the fibula • Insertion: undersurfaces of the 1st cuneiform and first metatarsal bones • Note: passes posterior to lateral malleolus. Origin: Area between the ASIS (Anterior Superior Iliac Spine) and AIIS (Anterior Inferior Iliac Spine). Muscle? It depresses the shoulder girdle at acrimioclavicular and sternoclavicular joints. Extension 2. The Spinalis muscles are the closest to the thoracic Vertebra of all the Erector Spinae muscles and consists of two muscles, the Cervicis and the Thoracis.. internal rotation Internal rotation of the hip when the knee is flexed. Attachments. There is an anatomical connection between pectoral girdle and the axial skeleton; that is, the sternoclavicular joints, that lies anteriorly. Muscles And Body Types MCQ Quiz! Shoulder Muscles: Origin, Insertion, Nerve Supply & Action. The levator scapulae muscle … Innervation:Suprascapular n. of the brachial plexus Origin: Supraspinatous fossa and spine of the … The muscles of the shoulder are grouped: Lateral. Insertion: Upper / Superior Fiber of Trapezius • Origin – medial one third of the superior nuchal line, external occipital protuberance and ligamentum nuchae. Tap card to see definition . Insertion: Middle 1/3 of the outer surface of the radius Actions: Pronation. MUSCLE ORIGIN Medial twoSupraspinatus thirds of the supra-spinous fossa of the scapula and the deep fascia that covers the muscle 10/02/2014 INSERTION INNERVATION Most superior facet on the Suprascapular greater tubercle nerve [C5,C6] of the humerus ACTION Rotator cuff muscle; initiation of abduction of arm to 15° at gleno-humeral joint 25 Learn vocabulary, terms, and more with flashcards, games, and other study tools. Radial nerve . 2, ulna, 3, biceps muscle; In human anatomy, the arm is the part of the upper limb between the glenohumeral joint (shoulder joint) and the elbow joint. These movements include flexion, extension, … membrane . At the elbow, the muscles produce flexion and extension of the forearm. Actions: Internal rotation, Adduction, Extension and stabilization of the glenohumeral joint. The posterior muscles include the trapezius, rhomboid major, and rhomboid minor. - Depresses and protracts (i.e. 2. Brachialis. SERRATUS ANTERIOR ⦿ Origin: Upper 10 ribs ⦿ Insertion: Medial border of scapula ... MUSCLES OF FLEXION/EXTENSION Insertion: Posterior part of the medial condyle of the tibia. Origin and insertion The coracobrachialis is a slender muscle that originates from the deep surface of the coracoid process of scapula. Innervation: Subscapular n. from the brachial plexus 2. b. Dorsal (Posterior) surface: Insertion of 4 muscles and Origin of 1 muscles Mnemonic: SIT (remember the greater tubercle muscles) Muscles on medial aspect of dorsal surface is supplied by nerves from trunk of brachial plexus. It assists in flexion of the arm (via its clavicular head) and It assists in extension of the arm (via the sternocostal head) at the glenohumeral joint. The posterior thoracic muscles are the trapezius, levator scapulae, rhomboid major, and rhomboid minor. The intrinsic muscles of the shoulder form the scapulohumeral group – main Intrinsic shoulder muscles – arise from the scapula and/or the clavicle, and inserts to the … When this muscle contracts, normally the arm moves due to having less mass than the torso. Origin Insertion Action Innervation Flexor Digitorum Superficialis. -Origin: C7 vertebra spinous process and medial 1/3 occiput. Muscle Action/Function of Rotatores Rotate to opposite side; bilateral extension. Flexion of the forearm is achieved by a group of three muscles — the brachialis, biceps brachii. Origin: hamate and flexor retinaculum; Insertion: proximal phalanx of the fifth digit Action: flexion of the fifth digit Innervation: ulnar nerve Opponens digiti minimi Origin: flexor retinaculum; Insertion: 5th metacarpal; Action: opposition of the fifth digit; Innervation: ulnar nerve Palmaris brevis. Muscle contraction results in different types of movement. Muscle Name Origin Insertion Action Innervation Muscles of Upper Extremity Pectoralis Major Medial half of clavicle, front of sternum, costal cartilage Crest of greater tubercle (Lateral lip of bicipital groove) Horizontally adduct, medially rotate at shoulder Medical and lateral pectoral • Insertion – posterior border of the lateral one third of the clavicle. Origin: Medial half of the clavicle and the sternum. Sternocostal fibres to posterior lamina with highest fibres into capsule Of shoulder Flexion. Above spine of scapula (supraspinous fossa): Supraspinatus (Suprascapular nerve) Origin: the supraspinous fossa. Origin: Anterior surface of the medial half of the clavicle Insertion: Lateral lip of the bicipital groove of the humerus and the anterior lip of the deltoid tuberosity Actions: Flexion, adduction, internal rotation of the arm at the shoulder 2. SHOULDER MUSCLES. Adduction 5. With the insertion fixed, it may assist in elevating thorax, as in forced inspiration. The Spinalis Cervicis origin points are from the lower ligamentum nuchae: spinous processes of C6 or C7 and the insertion point of attachment is the spinous process of the axis. Shoulder Flexion. Radius and interosseous . Origin: acromion, the length of the scapular spine Insertion: deltoid tuberosity on the humerus, fascia of the lateral arm Action: Flexor of Shoulder, Abductor and outward rotator of the arm. It … The biceps is one of three muscles in the anterior compartment of the upper arm, along with the brachialis muscle and the coracobrachialis muscle, with which the biceps shares a nerve supply. Supscapularis 1. Distal phalanx of thumb. Action . Origin and insertion are two ends of a muscle that attach to a bone . Origin is the attachment end to the immovable bone while insertion is the attachment end to a more movable bone. So, this is the key difference between origin and insertion. Origin is closer to the centre of the body while insertion is furthest to the centre of the body. Latissimus dorsi Define the following terms: 1. Teres major is a muscle of the shoulder with its origin on the posterior surface of the scapula. Innervation: Upper and lower subscapular nerve. Humerus (Lateral) Deltoid Tuberosity ; Comments. It derives its name from the fact that it consists of two parts (heads), both innervated by the musculocutaneous nerve. Origin and Insertion. Synergists: a muscle or a group of muscles that contract to help in making the movement more precise (eg. 1. Origin : It originates from the subcutaneous tissue of infraclavicular and supraclavicular regions. Origin: acromion, the length of the scapular spine Insertion: deltoid tuberosity on the humerus, fascia of the lateral arm Action: Flexor of Shoulder, Abductor and outward rotator of the arm. We will use examples to describe how the origin and insertion affect the action of a skeletal muscle. See more ideas about muscle anatomy, massage therapy, anatomy and physiology. Muscles/ Insertion/Origin/ Movements... 82 cards. The pectoral girdle connects the upper limb to the axial skeleton on the right and side left of the body. Origin: palmar aponeurosis and flexor retinaculum The lateral deltoid is involved in shoulder abduction when the shoulder is internally rotated.It is involved in shoulder flexion when the shoulder is internally rotated. THE SPINALIS MUSCLES. SHOULDER FLEXION 0 to 180* MUSCLES ORIGIN INSERTION Deltoid Axillary nerve Clavicle (ant. Brachialis m. Proximocaudal Surface of Humerus Proximomedial Surface of Radius Musculocutane ous n. Flexes elbow 3. Shoulder and Arm Anatomy. The muscle fibers run inferolaterally towards the humerus. Shoulder Girdle Muscle: The shoulder girdle is also known as the pectoral girdle. Fixator: is a muscle that prevents simultaneous movement of another joint that may hinder the desired movement (eg. Origin: Spinous processes of vertebrae T7-T12, Thoracolumbar fascia, Posterior third of crest of ilium, Ribs 9-12, Inferior angle of scapula Insertion: Intertubercular groove of the humerus Actions: Adducts, extends and internal rotation of the arm at the shoulder Innervation: Thoracodorsal nerve (C6 – C8) Blood Supply: Thoracodorsal artery from the axillary artery The flexor retinaculum is a fibrous connective tissue band that forms the anterior roof of the carpal tunnel. Learn faster with spaced repetition. As the muscles contract, they exert force … Shoulder Muscles: The shoulder muscles are associated with movements of the upper limb. Muscle chart diagram skeletal muscles muscle origin insertion. The internal rotators of the shoulder are muscles attaching to the humerus that internally rotate the arm: latissimus dorsi: originates on the lower thoracic and lumbar vertebrae as well as iliac crest. It attaches to the inferior angle of the scapula as it travels up to insert on the humerus. Brachialis is the last of the three muscles forming the anterior compartment of the arm. Shoulder flexion Brachialis Anterior humerus, distal half Ulnar tuberosity Elbow flexion Musculocutaneous and radial Muscle Origin Insertion Action Innervation Triceps brachii Long head: Infraglenoid tubercle Lateral head: Proximal half of posterior humerus Medial head: Distal posterior humerus Olecranon process Elbow extension Long head: Shoulder adduction and shoulder … Origin: Anterior & lateral manubrium. The anterior deltoid is only a weak synergist in strict transverse flexion, assisting the pectoralis major, but not transverse adduction, meaning the shoulder needs to be internally rotated to be recruited in the transverse plane. Flexes all joints from wrist to middle phalanges of digits 2-5. Action: Cervical extension (in bilateral contraction with contralateral counterpart); Function: When both sides contract, helps other muscles of the deep back and neck to hold the neck in extension while attending to tasks or communicating with others. Humerus Insertion: Scapula and clavicle. Tensor fascia antebrachii Click again to see term . Origin and Insertion. The scapula or shoulder blade is the bone that connects the clavicle to the humerus. Tap again to see term . Origin, Insertion, And Actions Of Facial Muscles Test Origin, Insertion, And Actions Of Facial Muscles Test Origin, Insertion, And Action Of Muscles Quiz Origin, Insertion, And Action Of Muscles Quiz When you select a muscle, note the book icon in the content box. ** muscle crosses 2 joint, has action at 2 joints Anterior Muscle Group Muscle Origin Insertion Actions **Biceps brachii long head above glenoid fossa; short head at coracoid process of scapula Radial tuberosity * shoulder jt = flexion of arm *elbow jt = flexion of forearm. The pectoral girdle connects the upper limb to the axial skeleton on the right and side left of the body. Action: Extension at elbow, plus extension and adduction at the shoulder. Orging and Insertion Anteoir Deltoid & Coracoidbraclias. flexor … • Actions: – Eversion – Plantar flexion • The tendon goes under the foot from the lateral to the medial surface, thus aiding in Origin = T12 vertebrae and lumbar Insertion = LT, Femur . Nine muscles cross the shoulder joint to move the humerus. Flexor pollicis longus muscle (Musculus flexor pollicis longus) Flexor pollicis longus, as its name suggests, is a long muscle of the forearm.It belongs to the deep flexors of the forearm, along with flexor digitorum profundus and pronator quadratus.Since it lies in the forearm but inserts in the hand, flexor pollicis longus is also classified as an extrinsic muscle of the hand. This muscle produces flexion, extension, adduction, and internal rotation of the shoulder. Many experts consider the flexor retinaculum synonymous with the transverse carpal ligament and the annular ligament; for this discussion, they will be considered the same structure. Scapula Acromion (Lateral) Insertion. The basic action of any muscle is contraction. For example, when you think about moving your arm using your biceps muscle, your brain sends a signal down a nerve cell telling your biceps muscle to contract. The amount of force that the muscle creates varies -- the muscle can contract a little or a lot depending on the signal that the nerve sends. O: Clivical I: Deltoid Tuberoristy. Origin: Lateral head from the superior, lateral margin of humerus; long head from infraglenoid tubercle of scapula; and medial head from posterior surface of humerus inferior to redial groove. shoulder muscles in elbow flexion). - make a selection - supraspinatus trapezius triceps brachii infraspinatus deltoid pectoralis major subscapularis biceps brachii teres minor latissimus dorsi. Origin: - Spinous processes of T2-T5 Insertion: - Medial border of scapula between root of spine and inferior angle What are the main functions and actions of the pectoralis minor? Abduction 4.
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