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 [?] It is often grouped as one of the muscles of the arm due to its insertion, but its actions involve the shoulder portion only, this why it has been included in the shoulder section here. The muscles of the neck stabilize and move the head. The origin is typically the tissues' proximal attachment, the one closest to the torso. Describe the muscles of the anterior neck. 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. The muscle inserts onto the anterior lateral surface of the body of the radius. It also acts as an extensor of the wrist and radial deviator. Finally, synergist muscles enhance the action of the agonist. The origin is the fixed attachment, while the insertion moves with contraction. It causes flexion of the interphalangeal joint (IP joint) of the thumb, as well as flexion at the metacarpophalangeal joint (MP joint). Muscles that move the eyeballs are extrinsic, meaning they originate outside of the eye and insert onto it. There are two main ones, so lets break em in half. The three muscles of the longissimus group are the longissimus capitis, associated with the head region; the longissimus cervicis, associated with the cervical region; and the longissimus thoracis, associated with the thoracic region. In summary, skeletal muscles are attached to bones on each end by tendons. Extensor carpi ulnaris muscle:This muscle arises from the lateral epicondyle and runs distally to insert onto the dorsal surface of the base of the 5th metacarpal and ulnar shaft. It acts to extend the pinky as well as the wrist. Mnemonic for Pectoral Muscles Origin Insertion Function Mnemonics for Facial Muscleshttps://youtu.be/ulMHYpvoRbsMnemonics for Tongue Muscle. Both these muscles are known as the punching muscles as they contribute to radial deviation of the wrist, which is essential for boxers. Curated learning paths created by our anatomy experts, 1000s of high quality anatomy illustrations and articles. The muscle is innervated by the anterior interosseous branch. All content published on Kenhub is reviewed by medical and anatomy experts. The movements would be used in bowling or swing your arms while walking. It arises from the spinous processes of the T7-L5 (L = Lumbar) vertebrae, costals 8-12, inferior angle of the scapula, and iliac crest. It helped me pass my exam and the test questions are very similar to the practice quizzes on Study.com. You will feel the movement originate there. It is innervated by the medial and lateral pectoral nerves. 2023 Antagonist contractions are opposite that of the agonist and serve to control the action. lessons in math, English, science, history, and more. This also helps you understand its action (s) as well as what injuries may be present if there is pain in relevant areas. It is innervated by the posterior interosseous branch. You ride Longer on a Superhighway. 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). flashcard sets. This expression of trauma makes the hand appear to be dorsiflexed. Due to its course it has a "serrated" or "saw-toothed" appearance. insertion: ribs, A big sheet The movement of the eyeball is under the control of the extra ocular (extrinsic) eye muscles, which originate from the bones of the orbitand insert onto the outer surface of the white of the eye. Origin: Clavicle, sternum, cartilages of ribs 1-7 Insertion: Crest of greater tubercle of humerus Action: flexes, adducts, and medially rotates arm, Origin: Clavicle, acromion process, spine of scapula Insertion: Deltoid tuberosity of the humerus Action: Abducts arm; flexes, extends, medially, and laterally rotates arm, Origin: thoracolumbar fascia Insertion: Intertubercular groove of humerus (spirals from your back under your arm) Action: adducts humerus (pulls shoulder back and down), Origin: Lateral border of scapula Insertion: Greater tubercle of humerus Action: Laterally rotates and adducts arm, stabilizes shoulder joint, Origin: Long head; superior margin of glenoid fossa Short Head; Coracoid process of scapula Insertion: Radial Tuberosity Action: Flexes arm, flexes forearm, supinates hand, Origin: Anterior, distal surface of humerus Insertion: coronoid process of ulna Action: Flexes forearm, Origin: Infraglenoid tuberosity of scapula, lateral and posterior surface of humerus Insertion: Olecranon process, tuberosity of ulna Action: Extends and adducts arm, extends forearm, Origin: Lateral supracondylar ridge of humerus Insertion: styloid process of radius Action: Flexes forearm, Origin: Symphysis Pubis (inferior ramus of pubis) 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. Use the following mnemonic to remember the origins of the biceps brachii muscle. It is innervated by the radial nerve. A rule of thumb is that any muscle tendon that crosses a joint will act on that joint. Reading time: 3 minutes. The radial two lumbricals are innervated by the median nerve and the ulnar two are innervated by the ulnar nerve. Muscle: Extensor pollicis brevis. The sternocleidomastoid divides the neck into anterior and posterior triangles. There are major muscles that you need to know, so without delay, lets give it a go. Grounded on academic literature and research, validated by experts, and trusted by more than 2 million users. Fluid, Electrolyte, and Acid-Base Balance, Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Matern, Katie Morrison-Graham, Devon Quick & Jon Runyeon, Next: 11.5 Axial muscles of the abdominal wall and thorax, Creative Commons Attribution-ShareAlike 4.0 International License, Moves eyes up and toward nose; rotates eyes from 1 oclock to 3 oclock, Common tendinous ring (ring attaches to optic foramen), Moves eyes down and toward nose; rotates eyes from 6 oclock to 3 oclock, Moves eyes up and away from nose; rotates eyeball from 12 oclock to 9 oclock, Surface of eyeball between inferior rectus and lateral rectus, Moves eyes down and away from nose; rotates eyeball from 6 oclock to 9 oclock, Suface of eyeball between superior rectus and lateral rectus, Maxilla arch; zygomatic arch (for masseter), Closes mouth; pulls lower jaw in under upper jaw, Superior (elevates); posterior (retracts), Opens mouth; pushes lower jaw out under upper jaw; moves lower jaw side-to-side, Inferior (depresses); posterior (protracts); lateral (abducts); medial (adducts), Closes mouth; pushes lower jaw out under upper jaw; moves lower jaw side-to-side, Superior (elevates); posterior (protracts); lateral (abducts); medial (adducts), Draws tongue to one side; depresses midline of tongue or protrudes tongue, Elevates root of tongue; closes oral cavity from pharynx. Insertion: Proximal, medial tibia It has both sternocostal and clavicular heads. Action: Extends thigh, flexes leg, Wider than semmitendonosis iliacus - origin: ilium fossa However, it prevents the humeral head from slipping downwards. Our opposable thumb is essential to our advancement as a species. Origin: from the ischium of the pelvis Insertion: the tibia of the lower leg. The palatoglossus originates on the soft palate to elevate the back of the tongue, and the hyoglossus originates on the hyoid bone to move the tongue downward and flatten it. It is innervated by the posterior scapular nerve. Upper limb muscles and movements: Anatomy | Kenhub origin: cervical vertebrae The insertions of these muscles have fibers intertwined with connective tissue and the dermis of the skin. The spinalis group includes the spinalis capitis, the spinalis cervicis, and the spinalis thoracis. The omohyoid muscle, which has superior and inferior bellies, depresses the hyoid bone in conjunction with the sternohyoid and thyrohyoid muscles. At the end of this video, you will be able to: 20 chapters | Working together enhances a particular movement. origin: tip of the coracoid process Origin: Ischial Tuberosity Axial muscles originate on the axial skeleton (the bones in the head, neck, and core of the body), whereas appendicular muscles originate on the bones that make up the bodys limbs. Agonists and antagonists are always functional opposites. Gross Anatomy (HS369) Lab 4 - Musculature Muscle: Pronator teres Extrinsic tongue muscles insert into the tongue from outside origins, and the intrinsic tongue muscles insert into the tongue from origins within it. The strap-like infrahyoid muscles generally depress the hyoid bone and control the position of the larynx. 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. Winged scapula is caused by an injury to the long thoracic nerve. Brachioradialis muscle:This muscle lies between the flexor and extensor compartments of the forearm. PAD DAB ('Use your hand to dab with a pad'). For example, one could say the wrist is distal to the elbow. Muscles involved in chewing must be able to exert enough pressure to bite through and then chew food before it is swallowed (Figure 11.4.4 and Table 11.4). It acts as an abductor of the shoulder, and inserts onto the superior facet of the greater tubercle of the humerus. Triceps brachii muscle:This is the only muscle of the posterior compartment of the arm. Kim Bengochea, Regis University, Denver. Check out the following quiz and the learn the muscles of the arm and shoulder. The serratus anterior muscle originates from the 1st to 8th or 9th rib s and inserts at the anterior surface of the scapula. A synergist is a muscle that enhances the action of the agonist. The pectoral girdle, or shoulder girdle, consists of the lateral ends of the clavicle and scapula, along . A. Muscles of the Head and Neck. The problem? The nerve supply is from the long thoracic nerve, which arises from the C5, C6, and C7 nerve roots. An Introduction to the Human Body, Chapter 2. It is innervated by spinal nerves C3-C4 and C5 via the posterior (dorsal) scapular nerve. The triceps brachii originates on the back of the scapula and humerus, and inserts on the back of the ulna in the forearm. There are numerous muscles in this compartment. The multifidus muscle of the lumbar region helps extend and laterally flex the vertebral column. It acts to extend the wrist and also contributes to radial deviation of the wrist. (Superior part: Anterior surface of superior angle. the iliopsoas or inner hip muscles: Psoas major. Term. Read more. The intrinsic muscles of the hand contain the origin and insertions within the carpal and metacarpal bones. It acts to draw the scapula lateral, forward, downward, and stabilizes the scapula. Action: Adducts thigh, Origin: iliac crest, anterior iliac surface Insertion: iliotibial band of fasciae latae Action: Flexes, abducts, and medially rotates thigh, Origin: Outer iliac blade, iliac crest, sacrum, coccyx Insertion: Gluteal tuberosity of femur, iliotibial band of fasciae latae Action: Extends and laterally rotates thigh, braces knee, Origin: Outer iliac blade Insertion: Greater trochanter of femur Action: Abducts and medially rotates thigh, Origin: Pubis, ischium Insertion: Gluteal tuberosity, linea aspera, adductor tubercle of distal femur Action: Adducts, flexes, extends and laterally rotates thigh, Origin: Anterior superior iliac spine Insertion: Proximal, medial tibia Action: Flexes and laterally rotates thigh, flexes leg, Origin: Anterior inferior iliac spine, margin of acetabulum Insertion: Tibial tuberosity by patellar tendon Action: Flexes thigh, extends leg, Origin: Greater trochanter of femur, linea aspera of femur Insertion: Tibial tuberosity by patellar tendon Action: Extends Leg, Origin: Linea aspera, medial side Insertion: Tibial tuberosity by patellar tendon Action: Extends Leg, Origin: Proximal, anterior femur Insertion: Tibial tuberosity by patellar tendon Action: Extends Leg, Origin: (long head) Ischial tuberosity, (short head) linea aspera In our cheat sheets, you'll find the origin (s) and insertion (s) of every muscle. Extensor indicis proprius muscle:This muscle arises from the posterior distal 3rd of the ulna and interosseous membrane and inserts onto the middle and distal phalanx of the index finger. In this anatomy muscle song, you can learn rhymes and mnemonics to help you remember the muscle name, location, and one of its functions/actions. Due to this abducting movement, the supraspinatus is commonly referred to as the suitcase muscle; i.e. The muscles of the back and neck that move the vertebral column are complex, overlapping, and can be divided into five groups. They also contribute to deep inhalation. Because the muscles insert in the skin rather than on bone, when they contract, the skin moves to create facial expression (Figure 11.4.1). Teres Major. 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). These are unique muscles which originate from flexor tendon and insert into extensor tendon and act as guy ropes to correct tension between two opposing forces to maintain balance.. Muscles of the Upper Limb Pectoralis minor ORIGIN: anterior surface of ribs 3 - 5 ACTION INSERTION: coracoid process (scapula) Muscles Stabilizing Pectoral Girdle INNERVATION: pectoral nerves: protracts / depresses scapula (Anterior view) Serratus anterior ORIGIN: ribs 1 - 8 INSERTION: ACTION medial border of scapula stabilizes / depresses The splenius group includes the splenius capitis and the splenius cervicis. Posterior dislocation can occur in epileptics or electric shocks. Thenar eminence:It consists of three muscle: flexor pollicis brevis, abductor pollicis brevis, and the opponens pollicis. laterally rotates the femur with hip extension, flexes humerus, antagonist of supraspinatus The muscles of facial expression originate from the surface of the skull or the fascia (connective tissue) of the face. Important in the stabilization of the vertebral column is the segmental muscle group, which includes the interspinales and intertransversarii muscles. succeed. Last Played February 22, 2022 - 12:00 am There is a printable worksheet available for download here so you can take the quiz with pen and paper. A skeletal muscle attaches to bone (or sometimes other muscles or tissues) at two or more places. An easy way to distinguish between the actions of the interossei is to use the following mnemonic. and grab your free ultimate anatomy study guide! Some axial muscles cross over to the appendicular skeleton. By accessing any content on this site or its related media channels, you agree never to hold us liable for damages, harm, loss, or misinformation. inserion: medial border of scapula The segmental muscles include the interspinales and intertransversarii. Flashcard Maker: sean bennet. These are innervated by the ulnar nerve. It consists mainly of type 1 muscle fibers and hence provides sustained elbow extension. In most cases, one end of the muscle is fixed in its position, while the other end moves during contraction. Resulting in the inability to straighten the digit. Hamstring Anatomy Mnemonics - Origin, Insertion, Innervation & Action No views Aug 11, 2022 0 Dislike Share Save Memorize Medical 125 subscribers Easy ways to learn and remember the. MUSCLE NAME ORIGIN INSERTION ACTION NOTES MUSCLES OF THE ANTERIOR AND LATERAL ABDOMINAL WALL Rectus abdominis External oblique Internal oblique Transversus abdominis Internal surfaces of costal cartilages of ribs 7-12 . It acts to pronate the forearm and weakly flex the elbow. It divides and allows the tendon of flexor digitorum profundus to pass through at Campers chiasm (tendon split). The muscle then descends inferiorly to insert into the radial tuberosity of the radius as well as help create the bicipital aponeurosis, an expansion that inserts into the deep fascia of the forearm and onto the ulna. The muscles of the anterior neck are arranged to facilitate swallowing and speech. The muscle can be divided into three sets of fibers: upper, middle, and lower. Deltoid muscle:This muscle is named due to its Greek delta letter shape (triangular) appearance. The humeral head arises from the medial supracondylar ridge of the humerus and the coronoid process of the ulna. Intrinsic muscles of the hand (mnemonic) - Radiopaedia We will use examples to describe how the origin and insertion affect the action of a skeletal muscle. The longus is innervated by the radial nerve and the brevis by the posterior interosseous branch. The muscle causes flexion of the wrist, and radial deviation when it acts with extensor carpi radialis. Copyright I would honestly say that Kenhub cut my study time in half. All the intrinsic muscles of hand are supplied by the deep . Explore the definition and actions of origin and insertion and learn about action nomenclature and the functional roles of muscles. This is a fracture of the distal third of the radial shaft with dislocation of the distal radioulnar joint. Conversely, you can say the elbow is proximal to the wrist. 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.
