muscle mnemonics origin, insertion action muscle mnemonics origin, insertion action

Insertion: greater trochanter on the back of the femur This is logical because this muscle inserts broadly at an angle across much of the back of the head, so it attaches to both lateral structures (the mastoid processes) and medial structures (the occipital bone). Flashcard Maker: sean bennet. The insertions of these muscles have fibers intertwined with connective tissue and the dermis of the skin. An easy way to distinguish between the actions of the interossei is to use the following mnemonic. 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) Rhomboid minor muscle:This is a smaller muscle with the same shape as the rhomboid major and lies above it. It can be difficult to learn the names and locations of the major muscles. 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). The muscle acts to supinate the forearm and forms the lateral border of the cubital fossa. The muscles of the head and neck are all axial. It has a long head and a short head. It acts as a weak flexor of the wrist and tenses the palmar aponeurosis (fascia) during grip. Agonists and antagonists are always functional opposites. The actions and innervation are the same as the rhomboid major. Resulting in the inability to straighten the digit. This results in a restricted range of motion. Finally, synergist muscles enhance the action of the agonist. This muscle song will help you learn the major muscles of the human body . It is innervated by the axillary nerve. 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.. Levator scapulae muscle:This is a deep small muscle that inserts onto the superior angle and superior medial scapular border. and grab your free ultimate anatomy study guide! In addition, you might want to watch our anatomy and physiology lectures on YouTube, or check our anatomy and physiology notes. Upper limb muscles and movements: want to learn more about it? All the intrinsic muscles of hand are supplied by the deep . 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. S: supraspinatus I: infraspinatus T: teres minor S: subscapularis With 'SITS', recalling this order also helps remember the insertions of these muscles, with the order being superior, middle, and inferior facets of the greater tubercle of the humerus for supraspinatus, infraspinatus and teres minor respectively and . insertion: mediar aspect of humerus, Origin posterior border of iliac crest It acts as a lateral rotator and a weak adductor of the shoulder. Flexion, extension, abduction, adduction, rotation whether youre a doctor, physiotherapist or yoga teacher, knowing the functions of a given muscle is very important. Insertion: Proximal, medial tibia The splenius muscles originate at the midline and run laterally and superiorly to their insertions. It is innervated by the median nerve, which passes between its two heads to enter the forearm. It inserts into the medial aspect of the 5th metacarpal. The thyrohyoid muscle also elevates the larynxs thyroid cartilage, whereas the sternothyroid depresses it. Shahab Shahid MBBS Sample Decks: Muscles Actions, Origins, and Insertions of the Pelvic Complex and Hip (week 5), The Structure of The Knee Joint (week 6), The Foot and Ankle (week 6) Show Class. Curated learning paths created by our anatomy experts, 1000s of high quality anatomy illustrations and articles. Take advantage of the following mnemonic to make your life a little easier! Enrolling in a course lets you earn progress by passing quizzes and exams. Pronator teres muscle is the larger of the pronator muscles and has two heads. In that manner of speaking, this article will explain all the anatomical aspects of the muscles of the scapula, arm, forearm and hand. However, the anatomist knows that the arm or the brachium is purely the region between the shoulder joint and elbow. Brachialis muscle:This is the deep primary flexor of the elbow and arises from the lower part of the anterior surface of the humerus. Join the nursing revolution. This website helped me pass! However, the scapula is integral to the movement of the shoulder via the rotator cuffand additional muscles. Simplify your retention of the thenar muscles by learning the following mnemonic! There are numerous muscles in this compartment as well. Pectoralis minor muscle:This muscle lies deep to the pectoralis major and arises from 3rd-5th costals sternal ends and its associated fascia (connective tissue surrounding a muscle group). It acts as an adductor (to add to the body), assists in extension and medial rotation, as well as stabilization of the scapula. It is innervated by the median nerve a branch of the lateral and medial cord of the brachial plexus. Both of these muscles are innervated by the anterior interosseous branch. With more than 600 muscles in the body, it can feel impossible to keep track of them all. It runs down the posterior compartment of the forearm and inserts into the middle and distal phalanges of the 2nd to 5th digits. As the muscles contract, they exert force on the bones, which help to support and move our body along with its appendages. The extrinsic muscles move the whole tongue in different directions, whereas the intrinsic muscles allow the tongue to change its shape (such as, curling the tongue in a loop or flattening it). The insertion then, is the attachment of a muscle on the more moveable bone. Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. It consists mainly of type 2a fibers and provides power and endurance to elbow extension. Additional muscles of facial expression are presented in Figure 11.4.2. Extensor carpi radialis longus and brevis muscles:The longus muscle arises from the lateral epicondylar ridge and inserts onto the dorsal surface of the 2nd metacarpal. The buccinator muscle compresses the cheek. In our cheat sheets, youll find the origin(s) and insertion(s) of every muscle. It commonly follows a FOSH. Muscle: Extensor pollicis brevis. lessons in math, English, science, history, and more. 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. Serratus anterior muscle:This muscle is so named due to its anterior digitations that have a serrated or finger-like appearance. It acts to flex the elbow. View Origin and Insertion points as a layer map Origin and Insertion points are available as a layer of the Skeletal System, which show a map of all attachment points across the full skeleton. The pectoral girdle, or shoulder girdle, consists of the lateral ends of the clavicle and scapula, along . The muscle origin often describes the more proximal attachment point of the muscle, while the muscle insertion point refers to the distal attachment. The muscle also forms the medial border of the cubital fossa. The abductor digiti minimi arises from the pisiform, pisohamate ligament, and flexor retinaculum. Author: Thats why wecreated muscle anatomy charts; your condensed, no-nonsense, easy to understand learning solution. Its like a teacher waved a magic wand and did the work for me. Register now Registered Nurse, Free Care Plans, Free NCLEX Review, Nurse Salary, and much more. Injection Gone Wrong: Can You Spot The Mistakes? Enter your email address below and hit "Submit" to receive free email updates and nursing tips. The serratus anterior muscle originates from the 1st to 8th or 9th rib s and inserts at the anterior surface of the scapula. See at a glance which muscle is innervated by which nerve. The muscle has a frontal belly and an occipital belly (near the occipital bone on the posterior part of the skull). These insert into the 2nd - 5th proximal phalanges. Read more. insertion: spinus process of scapula The first grouping of the axial muscles you will review includes the muscles of the head and neck, then you will review the muscles of the vertebral column, and finally you will review the oblique and rectus muscles. 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. My insertion is the angles of the ribs and transverse processes of C4-C6. 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. It is innervated by the anterior interosseous branch. It arises from the transverse processes of the superior four cervical vertebrae (C1-C4). Raise your eyebrows as if you were surprised and lower your eyebrows as if you were frowning. It inserts on the distal phalangesof the 2nd to 5th digits and acts to flex the distal IP joints of the fingers. Flexor pollicis longus muscle:This muscle is found superficially within the deep layer. The Lymphatic and Immune System, Chapter 26. The transversospinales muscles run from the transverse processes to the spinous processes of the vertebrae. The intrinsic muscles of the hand contain the origin and insertions within the carpal and metacarpal bones. This muscle also modulates the movement of the deltoid like the other rotator cuff muscles. You walk Shorter to a street Corner. The back muscles stabilize and move the vertebral column, and are grouped according to the lengths and direction of the fascicles. Get unlimited access to over 88,000 lessons. I would definitely recommend Study.com to my colleagues. We will use examples to describe how the origin and insertion affect the action of a skeletal muscle. Biceps femoris, semitendinosus, and semimembranosus. The extrinsic muscles of the hand originate outside the hand, commonly the forearm, and insert into hand structures. This muscle is considered an accessory muscle of respiration. F lexor digitorum profundus muscle:It rises from the anterior proximal surface of the ulna and adjacent interosseous membrane and deep fascia of the forearm. The Nervous System and Nervous Tissue, Chapter 13. Tongue muscles can be extrinsic or intrinsic. The origin is the attachment site that doesn't move during contraction, while the insertion is the attachment site that does move when the muscle contracts. The muscle causes flexion of the wrist, and radial deviation when it acts with extensor carpi radialis. Kim Bengochea, Regis University, Denver. Click the card to flip . It's important to note that the antagonist contraction is minor in comparison to the agonist contraction, and therefore it doesn't prevent the action of the agonist. The distal phalanx therefore lies in permanent flexion, and has the appearance of a mallet. The spinalis group includes the spinalis capitis, the spinalis cervicis, and the spinalis thoracis. Most skeletal muscles create movement by actions on the skeleton. insertion: lesser trochanter of femur, Characteristic of the Sympathetic and Parasym, Practical #1 (Anatomical position and terms,, ohio life insurance missed questions and answ. The semispinalis muscles include the semispinalis capitis, the semispinalis cervicis, and the semispinalis thoracis. This system reflects the bones of the skeleton system, which are also arranged in this manner. This is a fracture of the proximal third of the ulna with associated dislocation of the proximal radioulnar joint. 977 Cards -. 2. The muscles of the neck stabilize and move the head. Tongue muscles are both extrinsic and intrinsic. It is innervated by the thoracodorsal nerve, a branch of the posterior cord of the brachial plexus. It is innervated by the medial and lateral pectoral nerves. They arise from the metacarpal bones and insert into the extensor hoods of each finger. The muscles of the back and neck that move the vertebral column are complex, overlapping, and can be divided into five groups. This mnemonic recalls the four intrinsic muscles of the hand innervated by the median nerve, whereas all the other intrinsic muscles are ulnar nerve: F: flexor pollicis brevis. This muscle chart eBook covers the following regions: This eBook contains high-quality illustrations and validated information about each muscle. If youve ever attempted to learn the origins, insertions, innervations, and functions of all 600+ muscles in the body youll know what a soul-destroying task it can be. Due to its course it has a "serrated" or "saw-toothed" appearance. There's a lot to learn about the anatomy of the upper limb muscles. Iliococcygeus is a thin sheet of muscle that traverses the pelvic canal from the tendinous arch of the levator ani to the midline iliococcygeal raphe where it joins with the muscle of the other side and connects with the superior surface of the sacrum and coccyx. 52 Learners. [3] Origin and Insertion The muscles of the neck are categorized according to their position relative to the hyoid bone (Figure 11.4.7). A. Muscles of the Head and Neck. It commonly occurs following a fall onto an outstretched hand (FOSH). Origin: Action: external rotator of the thigh It acts as an adductor, medial rotator, and flexor of the arm at the shoulder joint. Most of these movements are realized when we run. Origin: Inferior angle of scapula. Why not cut your time in half by studying with our upper limb muscle anatomy chart? Subscapularis muscle:This is another muscle of the rotator cuff, which is deep and arises from the large anterior subscapular fossa. This also helps you understand its action (s) as well as what injuries may be present if there is pain in relevant areas. which stands for supraspinatus, infraspinatus, teres minor, and subscapularis. , My action is to bilaterally extend the head and neck and unilaterally laterally flex . Generally the muscles in the same compartment insert into the same bone. It is the primary lateral rotator of the shoulder, it also modulates deltoid movement. The opponens digiti minimi arises from the hook of hamate and flexor retinaculum. 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. It is innervated by the deep branch of the radial nerve. The same fracture that is palmarflexed is referred to as a Smith's fracture making the hand appear as it is coming inward and downward. All our four muscle chart ebooks are also available with the Latin terminology. action: extend the neck ; retract and adduct scapulae, posterior It inserts onto the ulnar aspect of the 5th proximal phalanx. Short head originates from Coracoid process. There are major muscles that you need to know, so without delay, lets give it a go. The Cellular Level of Organization, Chapter 4. Latissimus dorsi muscle :This is a large, fan shaped superficial muscle which has a large area of origin. It is innervated by the posterior scapular nerve. The nerve supply comes from the upper and lower subscapular. The Tissue Level of Organization, Chapter 6. Test your knowledge on the muscles of the arm right away using our handy round-up of quizzes, diagrams and free worksheets. The muscle inserts onto the anterior lateral surface of the body of the radius. As the supraspinatus passes under the subacromial arch it is vulnerable to rupture from a bony spur. Naming Skeletal Muscles | How are Muscles Named? Opponens pollicis acts to oppose the thumb with the other digits (rotation of the thumb to pulp of the other fingers and not just flex across the palm). It also spreads the digits aparts during extension of the MP joints. However, it prevents the humeral head from slipping downwards. 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 axial muscles are grouped based on location, function, or both. Let's take a look at forearm flexion and identify the roles of the different muscles involved. The triceps is the antagonist, and its action opposes that of the agonist. The longissimus group includes the longissimus capitis, the longissimus cervicis, and the longissimus thoracis. 2023 You can feel the temporalis move by putting your fingers to your temple as you chew. 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. The muscles of the anterior neck facilitate swallowing and speech, stabilize the hyoid bone and position the larynx. Pick a muscle and look up its origin, insertion, and action. flashcard sets. A: abductor pollicis brevis. With these movements, you can feel the action of the corrugator supercilli. Diaphragm *Note the distinction between internal and innermost intercostal.