The erector spinae comprises the iliocostalis (laterally placed) group, the longissimus (intermediately placed) group, and the spinalis (medially placed) group. Mnemonic for Pectoral Muscles Origin Insertion Function Mnemonics for Facial Muscleshttps://youtu.be/ulMHYpvoRbsMnemonics for Tongue Muscle. Chapter 1. The short head arises from the coracoid process and both heads unite. Muscular contraction produces an action, or a movement of the appendage. It inserts onto the deltoid tuberosity, which is a roughened elevated patch found on the lateral surface of the humerus. the iliopsoas or inner hip muscles: Psoas major. Skeletal Muscles (Comments, Origin, Insertion, Action, Nerve) by melissa1780d, Mar. Similar to the erector spinae muscles, the semispinalis muscles in this group are named for the areas of the body with which they are associated. Working Scholars Bringing Tuition-Free College to the Community, Differentiate between origin and insertion, as well as proximal and distal, Explain how agonists, antagonists and synergists work together to control muscle movement. The muscle forms the posterior axillary fold and rotates in order to insert onto the floor of the intertubercular sulcus of the humerus. Get your muscle charts below. It is innervated by the radial nerve. 52 Learners. My insertion is transverse processes C1-C4, mastoid process, and occipital bone. I would definitely recommend Study.com to my colleagues. Long head originates from the Supraglenoid cavity. They arise from the metacarpal bones and insert into the extensor hoods of each finger. Bony Landmarks Types & Identification | What are Femur Landmarks? It is innervated by the C3 & C4 and the accessory nerve (cranial nerve 11 = CN11). This is a fracture of the proximal third of the ulna with associated dislocation of the proximal radioulnar joint. insertion: top of scapula The rotator cuff is formed by four muscles, supraspinatus, infraspinatus, teres minor, and subscapularis. The shoulder moves at the glenohumeral joint. which stands for supraspinatus, infraspinatus, teres minor, and subscapularis. Hip Muscles | Anatomy, Support & Movement, Pectoralis Major Action, Function, Insertion & Origin, Erector Spinae Action, Origin & Insertion | Iliocostalis, Longissimus & Spinalis, Teres Major Muscle Action, Origin & Insertion | Teres Major Location, Multifidus Muscle | Origin, Insertion & Action, Pectoralis Minor | Origin, Action & Insertion, Establishing Boundaries in Massage Therapy, Deltoid Muscle Action, Origin & Insertion | Deltoid Muscle Function. 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. Muscle Origin, Insertion, and Action - 1 by AshPopRox 4,509 plays 11 questions ~30 sec English 11p More 6 too few (you: not rated) Tries Unlimited [?] Have you triedour upper limb muscle anatomy revision chartyet? The humeroulnar head arises from the medial epicondyle and the radial head arises from the superior anterior surface of the radial shaft. This is the reason the muscle is well developed in boxers who protract their scapula in the terminal phases of their punches in order to maximize reach. The biceps brachii originates on the front of the scapula of the shoulder and inserts on the front of the radius in the forearm. Read more. Why not cut your time in half by studying with our upper limb muscle anatomy chart? It acts as an adductor, medial rotator, and flexor of the arm at the shoulder joint. Most skeletal muscle is attached to bone on its ends by way of what we call tendons. Diaphragm *Note the distinction between internal and innermost intercostal. The longus is innervated by the radial nerve and the brevis by the posterior interosseous branch. The triceps brachii becomes the agonist - while the biceps brachii is the antagonist - when we extend our forearm. Raise your eyebrows as if you were surprised and lower your eyebrows as if you were frowning. 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). This results in a restricted range of motion. Origin: Flexor digitorum profundus (FDP) Insertion: Extensor hood on radial side (lateral bands) Function: Flex MCP joint and extend PIP joint Innervation. The second way to describe a muscle's action is based on the joint, or the articulation. Pectoralis minor inserts onto the coracoid process of the scapula. We will study these muscles in depth. The brevis muscle arises from the lateral epicondyle and inserts onto the dorsal base of the 3rd metacarpal. The first describes action in terms of the bone to which the muscle is attached or the appendage that is moved. Supinator muscle:It is a small muscle that arises from the lateral epicondyle of the humerus, the supinator crest of the ulna, as well as the annular and radial collateral ligaments that support the radius against the ulna. All interossei are innervated by the deep branch of the ulnar nerve, which enters the palm through Guyons canal, a tunnel formed by the pisiform and hook of hamate. It is the primary lateral rotator of the shoulder, it also modulates deltoid movement. The information we provide is grounded on academic literature and peer-reviewed research. 2. Describe the muscles of the anterior neck. Its innervation is from the upper suprascapular nerve. 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. Origin: Clavicle, acromion process, spine of scapula Insertion: Deltoid tuberosity of the humerus Action: Abducts arm; flexes, extends, medially, and laterally rotates arm. Teres Major. An agonist, or as I said before, a prime mover, is the muscle that is primarily responsible for the movement described: forearm flexion. Muscles are either axial muscles or appendicular. Click to Rate "Hated It" . 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, Anterior, medical and posterior thigh muscles, Anterior, lateral and posterior leg muscles, Thenar, hypothenar and metacarpal muscles of the hand, Muscles of facial expression and mastication. Validated and aligned with popular anatomy textbooks, these muscle cheat sheets are packed with high-quality illustrations. The muscle arises from costals (ribs) 1 - 8, sometimes terminating origins at costal 9. The middle fibers retract (adduct). Some People Bang Like Monkeys. 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. Enrolling in a course lets you earn progress by passing quizzes and exams. 1. The muscle can be divided into three sets of fibers: upper, middle, and lower. This muscle also prevents the humeral head from moving too far upwards while the deltoidis in action, as do all the rotator cuff muscles. It controls extension, lateral flexion, and rotation of the vertebral column, and maintains the lumbar curve. The particular movement is a direct result of the muscle attachment. The Cellular Level of Organization, Chapter 4. Reviewer: The muscles in the face create facial expression by inserting into the skin rather than onto bone. 2023 Reading time: about 1 hour. The problem? It inserts onto the ulnar aspect of the 5th proximal phalanx. In this article we will discuss the gross (structure) and functional anatomy (movement) of the muscles of the upper limb. The muscles of the back and neck that move the vertebral column are complex, overlapping, and can be divided into five groups. Insertion: Medial proximal condyle of tibia Action: Extends thigh, flexes leg, Origin: Lateral condyle and proximal tibia Insertion: First metatarsal and first cuneiform Action: Dorsiflexes and inverts foot, Origin: Condyles of femur Insertion: Calcaneus by calcaneal tendon Action: Flexes leg, plantar flexes foot, Origin:Posterior, proximal tibia and fibula Insertion: Calcaneus by calcaneal tendon Action: Plantar flexes foot, Origin: Head and shaft of fibula, lateral condyle of tibia Insertion: First metatarsal, first cuneiform Action: Plantar flexes and everts foot, Origin: Lateral COndyle of tibia, shaft of fibula Insertion: Middle of distal phalanges of second through fifth digits Action: Extends toes, dorsiflexes foot, Origin: Inferior border of a rib Insertion: Superior border of rib below Action: Elevates ribs (increases volume in thorax), Origin: Inferior border of a rib Insertion: Superior border of rib below Action: Depresses ribs (decreases volume in thorax), Origin: Posterior occipital bone, ligamentum nuchae, C7-T12 Insertion: Clavicle, Acromion process, and spine of scapula Action: Extends and abducts head, rotates and adducts scapula, fixes scapula, Origin: Spines of T2-5 Insertion: Lower one-third of vertebral border of scapula Action: retraction of scapula, Origin: Ligamentum nuchae, Spines C7-T1 Insertion: Vertebral border of scapula at scapular spine Action: retraction of scapula, Origin: Galea aponeurotica Insertion: Skin superior to orbit Action: Raises eyebrows, draws scalp anteriorly, Origin: Fascia of facial muscles near mouth Insertion: Skin of lips Action: Closes lips, Origin: Frontal and maxilla on medial margin of orbit Insertion: Skin of eyelid Action: Closes eyelid, Origin: Zygomatic arch Insertion: Angle and ramus of mandible Action: Closes mandible, Origin: Temporal fossa Insertion: coronoid process and ramus of mandible Action: Closes mandible, Origin: Sternum, clavicle Insertion: Mastoid process of temporal Action: Abducts, rotates, and flexes head, Origin: Ribs 1-8 Insertion: Vertebral border and inferior angle of scapula Action: Abducts scapula (moves scapula away from spinal column), Origin: Bottom of rib cage, Crest of pubis, symphysis pubis Insertion: xiphoid process, Origin: Ribs 5-12 Insertion: Linea alba, iliac crest, pubis Action: Compresses abdominal wall, laterally rotates trunk, Origin: Inguinal ligament, iliac crest Insertion: Linea alba, ribs 10-12 Action: Compresses abdominal wall, laterally rotates trunk, Origin: the inner surface of the 7th to 12th costal cartilages, the thoracolumbar fascia, the iliac crest horizontally, and the inguinal ligament Insertion: linea alba Action: support for the abdominal wall, directly on top of the sciatic nerve



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