muscle mnemonics origin, insertion action

An agonist, or as I said before, a prime mover, is the muscle that is primarily responsible for the movement described: forearm flexion. It also flexes the MP and wrist joints, although these are its secondary functions. flashcard sets. Medial border: Insertion of 3 muscles Mnemonic: SLR - all supplied by nerves from ROOT of brachial plexus Anteriorly: Serratus anterior (Long thoracic nerve) Posteriorly: Superiorly: Levator scapulae (Dorsal scapular nerve) Inferiorly: Rhomboids - minor superior to major (Dorsal scapular nerve) SLR and SIT mnemonic for scapular muscle attachment b. | 15 There are numerous muscles in this compartment. Pick a muscle and look up its origin, insertion, and action. Take a look at the following two mnemonics! Thats why wecreated muscle anatomy charts; your condensed, no-nonsense, easy to understand learning solution. Memorize Muscles, Origins, and Insertions with Cartoons and Mnemonics: 46 Muscles of the Lower Quadrant [Print Replica] Kindle Edition by Byron Moffett (Author) Format: Kindle Edition 24 ratings See all formats and editions Kindle $9.99 Read with Our Free App What are you waiting for? Copyright There are a number of other joints in the region which all move in unison in order to generate a stable movement. The hand is truly the epitome of anatomical complexity. The palmar interossei are unipennate, and the dorsal interossei are bipennate. With these movements, you can feel the action of the corrugator supercilli. As the muscles pass anteriorly to the MP joints and insert they cause flexion of the MP joint and extension of the IP joints. Curated learning paths created by our anatomy experts, 1000s of high quality anatomy illustrations and articles. All rights reserved. Muscle: Abductor pollicis longus - Origin: - Posterior surfaces of radius and ulna - Interosseous membrane - Insertion: Base of 1st metacarpal - Action: - Radial deviation of wrist - Abduction of thumb at CMC joint - Nerve Supply: Deep branch of radial nerve. Interossei:These are grouped into four dorsal and threepalmar interossei and are part of the midpalmar group. It passes laterally to insert onto the lesser tubercle of the humerus. Do Humans Have an Open or Closed Circulatory System? The nerve supply arises from the suprascapular nerve (upper and lower), which arises from the unification of the anterior rami of spinal nerves C5 and C6(C = cervical). Muscle contraction results in different types of movement. Raise your eyebrows as if you were surprised and lower your eyebrows as if you were frowning. This necrosis lead to a flattened thenar eminence (thumb mound palmar surface). Mnemonics to recall the muscles of the rotator cuff are:. Origin: Ischial tuberosity There are relatively few muscles which its movements and function are easy to learn. It acts to pronate the forearm and weakly flex the elbow. 1 / 24. 'Rule of 3s' and 'Busy BeesCollaBorate well'. It is innervated by the anterior interosseous branch. This muscle primary retracts the scapula, elevates the medial border, and also stabilizes the scapula against the thoracic wall. The Cellular Level of Organization, Chapter 4. Get instant access to this gallery, plus: Introduction to the musculoskeletal system, Nerves, vessels and lymphatics of the abdomen, Nerves, vessels and lymphatics of the pelvis, Infratemporal region and pterygopalatine fossa, Meninges, ventricular system and subarachnoid space, Extensor carpi radialis longus and brevis, Pectoralis major, Pectoralis minor, Deltoid, Latissimus dorsi, Supinator, Extensor digitorum, Extensor carpi ulnaris, Extensor carpi radialis longus and brevis, Extensor indicis proprius, Extensor digiti minimi, Brachioradialis, Thenar eminence, Hypothenar eminence, Interossei, Lumbricals, Inferior angle and lower part of the lateral border of the scapula, Intertubercular sulcus (medial lip) of the humerus, Adduction and medial rotation of the humerus (arm), Lateral border of the scapula (middle part), Greater tubercle of the humerus (inferior facet), Lateral rotation of the arm, stabilization of the humerus as part of the rotator cuff muscles, Greater tubercle of the humerus (middle facet), Greater tubercle of the humerus (superior facet), Assistance in arm abduction,stabilization of the humerus as part of the rotator cuff muscles, Medial rotation of the arm,stabilization of the humerus as part of the rotator cuff muscles, Transverse process of the atlas and axis, posterior tubercles C3 and C4, Posterior surface of the medial scapular border (from the superior angle to the root of the spine of the scapula), Anterior rami of the nerves C3 and C4, dorsal scapular nerve (branch of the C5), Superior nuchal line, external occipital protruberance, nuchal ligament, spinous processes of C7 to T12 vertebrae, Lateral third of the clavicle, acromion and spine of the scapula, Spinal accessory nerve; C3 and C4 spinal nerves, Elevation, depression, and retraction of the scapula, Medial half of the clavicle (clavicular head); anterior surface of the sternum, 1st to 6th costal cartilages, aponeurosis of, Adduction and medial rotation of the humerus, Anterior surface of the 3rd, 4th, and 5th ribs and the fascia overlying the intercostal spaces, Medial border and superior surface of the coracoid process of the scapula, Protraction of the scapula, pulls the coracoid process anteriorly and inferiorly, accessory muscle in respiratory, Lateral third of the clavicle, acromion, and spine of scapula, Abduction and stabilization of the shoulder joint, Spinous processes of T7-L5 and sacrum, iliac crest, X-XII ribs, Distal half of the anterior side of the humerus and intermuscular septa, Flexion of the forearm at the elbow joint, Flexion of the forearm at the elbow joint, supinator of the forearm, accessory flexor of the arm at the glenohumeral joint, Anterior surface of the ulna (distal quarter), Anterior surface of the radius (distal quarter), Forearm pronationand binding of the radius and ulna, Anterior surface of the radius and interosseous membrane, Proximal parts of the anterior and lateral surfaces of the ulna and interosseous membrane, Bases of the phalanges of the 4th and 5th digits (medial part), bases of the phalanges of the 2nd and 3rd digits (lateral part), Ulnar nerve (medial part), anterior interosseous nerve (lateral part), Flexion of the distal phalanges at the interphalangeal joints of the 4th and 5th digits (medial part) and of the 2nd and 3rd digits (lateral part), Medial epicondyle of the humerus and coronoid process of the ulna (humero-ulnar head) and superior half of anterior border (ulnar head), Shafts of middle phalanges of medial four digits, Flexion of middle phalanges at proximal interphalangeal joints and flexion of the proximal phalanges at the metacarpophalangeal joints of the middle four digits, Medial epicondyle of the humerus (common flexor tendon), Flexor retinaculum and palmar aponeurosis, Medial epicondyle of the humerus (humeral head), coronoid process of the ulna (ulnar head), Lateral epicondyle of the humerus, crest of the ulna, supinator fossa, radial collateral and anular ligaments, Surface of the proximal third of the radial shaft, Posterior surfaces of the middle and distal phalanges (2nd-5th), Posterior interosseus nerve (branch of the radial nerve), Extension of the index, middle, ring and little fingers, Lateral epicondyle of the humerus, posterior border of the ulna, Medial side of the base of the metacarpal V, Posterior side of the distal third of the ulnar shaft; interosseous membrane, Proximal two-thirds of the supra-epicondylar ridge of the humerus, Lateral surface of the distal end of the radius, Forearm flexion, especially during mid-pronation, Flexor retinaculum and tubercle of trapezium and scaphoid bones, Thumb flexion, abduction, and medial rotation resulting in a combined movement called opposition, Abduction of the 5th digit and flexion assistance of the proximal phalanx, Base of the proximal phalanx of the 5th digit, Flexion of the proximal phalanx of the 5th digit, Sides of two adjacent metacarpals (dorsal interossei) and palmar surfaces of the 2nd, 4th, 5th metacarpals (palmar interossei), Bases of the proximal phalanges via the extensor expansions of the 2nd to 4th digits (dorsal interossei) and 2nd, 4th, and 5th digits (palmar interossei), Abduction of the 2nd to 4th digits (dorsal interossei), adduction of the 2nd, 4th, and 5th digits (palmar interossei), assisting the lumbricals in extension, Tendons of the flexor digitorum profundus, Lateral expansions of the 2nd to 5th digits, Flexion of the metacarpophalangeal joints and extension of the interphalangeal joints of the 2nd to 4th digits. It acts to extend the wrist, fixes writs during clenching fist, and when it acts with flexor carpi ulnaris it contributes to ulnar deviation of the wrist. 1 / 24. The transversospinales include the semispinalis capitis, semispinalis cervicis, semispinalis thoracis, multifidus, and rotatores. Deltoid muscle:This muscle is named due to its Greek delta letter shape (triangular) appearance. Print Muscle Origin and Insertion: Definition and Actions Worksheet 1. Skeletal Muscles (Comments, Origin, Insertion, Action, Nerve) by melissa1780d, Mar. These include the digastric muscle, which has anterior and posterior bellies that work to elevate the hyoid bone and larynx when one swallows; it also depresses the mandible. Its like a teacher waved a magic wand and did the work for me. Author: Due to its course it has a "serrated" or "saw-toothed" appearance. When a movement is repeated over time, the brain creates a long-term muscle memory for that task, eventually allowing it to be performed with little to no conscious . copyright 2003-2023 Study.com. Remaining 0 Correct 0 Wrong 0 Press play! I highly recommend you use this site! When these muscles act unilaterally, the head rotates. The scaphoid bone forms the floor of the anatomical snuffbox and articulates with the radius at the wrist. Thenar eminence:It consists of three muscle: flexor pollicis brevis, abductor pollicis brevis, and the opponens pollicis. Join the nursing revolution. The Chemical Level of Organization, Chapter 3. Although the tongue is obviously important for tasting food, it is also necessary for mastication, deglutition (swallowing), and speech (Figure 11.4.5 and Figure 11.4.6). You ride Longer on a Superhighway. The layman will refer to the entire upper limb as the arm. Palmaris longus muscle: This muscle can be absent in some of the population. It may seem strange that it is included in the anatomy of the upper limb. The biceps brachii originates on the front of the scapula of the shoulder and inserts on the front of the radius in the forearm. The Tissue Level of Organization, Chapter 6. The clavicular head enables the muscle to act as a flexor (decrease angle between joints) of arm at the shoulder and the sternocostal head enables the muscle to act as an extensor (increase angle between joints). remember this mnemonic: Aortic hiatus=12 letters =T12 Esophageal =10 letters= T10 Vena cava = 8 letters = T8 The lower subscapular nerve innervates the muscle and it is a branch of the posterior cord of the brachial plexus. The muscle is innervated by the posterior interosseous branch. From the sides and the back of the neck, the splenius capitis inserts onto the head region, and the splenius cervicis extends onto the cervical region. Muscle origins and insertions dictate the type of movement that occurs when a muscle contracts. Important in the stabilization of the vertebral column is the segmental muscle group, which includes the interspinales and intertransversarii muscles.

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