muscle mnemonics origin, insertion action

This muscle chart eBook covers the following regions: This eBook contains high-quality illustrations and validated information about each muscle. The neurovascular bundle (intercostal nerve, artery and vein) will separate these two muscles. The muscles of the anterior neck assist in deglutition (swallowing) and speech by controlling the positions of the larynx (voice box), and the hyoid bone, a horseshoe-shaped bone that functions as a foundation on which the tongue can move. The two bellies are connected by a broad tendon called the epicranial aponeurosis, or galea aponeurosis (galea = apple). The serratus anterior muscle originates from the 1st to 8th or 9th rib s and inserts at the anterior surface of the scapula. 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. The orbicularis oris is a circular muscle that moves the lips, and the orbicularis oculi is a circular muscle that closes the eye. Due to these attachments, contraction and muscle shortening of the biceps flexes the forearm. It inserts into the medial aspect of the 5th metacarpal. It inserts onto the ulnar aspect of the 5th proximal phalanx. Antagonist contractions are opposite that of the agonist and serve to control the action. 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. Muscles of the Pectoral Girdle and Upper Limbs Biceps brachii muscle:This superficial muscle forms the bulk of the anterior compartment of the arm. Each of these muscles has a name; for example, again, the biceps brachii and now the triceps brachii, responsible for both forearm flexion and forearm extension, respectively. This website helped me pass! Copyright 2023 RegisteredNurseRN.com. Gross Anatomy (HS369) Lab 4 - Musculature Muscle: Pronator teres I feel like its a lifeline. Agonists and antagonists are always functional opposites. It allows for powerful elbow extension (such as doing a pushup). 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. The lateral head arises from the posterior surface of the humerus, above the radial groove of the humerus. Action: Extends thigh, flexes leg, Wider than semmitendonosis Upper limb muscles and movements: Anatomy | Kenhub Reviewer: The medial head is supplied by the ulnar nerve, and the lateral head by the anterior interosseous branch. It consists mainly of type 2a fibers and provides power and endurance to elbow extension. Brachialis muscle:This is the deep primary flexor of the elbow and arises from the lower part of the anterior surface of the humerus. Memorizethe superficial forearm flexors usingthe followingmnemonic! This muscle song will help you learn the major muscles of the human body . Origin: Clavicle, acromion process, spine of scapula Insertion: Deltoid tuberosity of the humerus Action: Abducts arm; flexes, extends, medially, and laterally rotates arm. The palmar interossei are unipennate, and the dorsal interossei are bipennate. The human body has over 500 muscles responsible for all types of movement. See at a glance which muscle is innervated by which nerve. The longus is innervated by the radial nerve and the brevis by the posterior interosseous branch. Shoulder Muscles Anatomy - Simplified | Epomedicine Tap the Skeletal System Icon, and press the Plus button until you come to the Origin and Insertion layer (the fourth layers of the system). Serratus anterior muscle:This muscle is so named due to its anterior digitations that have a serrated or finger-like appearance. All content published on Kenhub is reviewed by medical and anatomy experts. It is also capable of weakly supinating and pronating the forearm. It acts to flex the elbow. 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 Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster. Last reviewed: July 22, 2022 insertion: lesser trochanter of femur, Characteristic of the Sympathetic and Parasym, Practical #1 (Anatomical position and terms,, ohio life insurance missed questions and answ. Muscle: Extensor pollicis brevis. Origin: For . What are you waiting for? 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. This necrosis lead to a flattened thenar eminence (thumb mound palmar surface). The styloglossus originates on the styloid process of the temporal bone, and allows upward and backward motion. The scapular region lies on the posterior surface of the thoracic wall. The posterior muscles of the neck are primarily concerned with head movements, like extension. It is innervated by the posterior interosseous branch. Simplify your retention of the thenar muscles by learning the following mnemonic! Supraspinatus tears result in inability to initiate shoulder abduction. 2. There are relatively few muscles which its movements and function are easy to learn. Suprahyoid muscles are superior to it, and the infrahyoid muscles are located inferiorly. It is innervated by the medial and lateral pectoral nerves. 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. Simplifying Muscle Origin, Insertion, And Action | 3D Muscle Lab Its action is elevation of the scapula as well as superior rotation of the scapula. The upper limb(upper extremity) is truly a complex part of human anatomy. The tendon is kept close to the bones by a series of flexor tendon sheaths, which lubricate the tendon and prevent bowstringing (excessive loss of proximal pulley). It is innervated by the posterior interosseous branch. A FOSH may fracture the bone. This can present as pain, weakness and loss of shoulder movement between 60 and 120 degrees of abduction. Manifestations are limited movement of the shoulder and severe pain. It can be difficult to learn the names and locations of the major muscles. Insertion: greater trochanter on the back of the femur However, it prevents the humeral head from slipping downwards. The clavicular head arises from the medial two thirds of the inferior surface of the clavicle. Both of these muscles are innervated by the anterior interosseous branch. The extrinsic muscles all include the word root glossus (glossus = tongue), and the muscle names are derived from where the muscle originates. Muscle origins and insertions dictate the type of movement that occurs when a muscle contracts. 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). Last reviewed: November 03, 2021 The geniohyoid depresses the mandible in addition to raising and pulling the hyoid bone anteriorly. The closer we move to the hand the more muscles we begin to have, as our movements require finer and finer gradations. In our cheat sheets, you'll find the origin (s) and insertion (s) of every muscle. It also flexes the MP and wrist joints, although these are its secondary functions. Thats why wecreated muscle anatomy charts; your condensed, no-nonsense, easy to understand learning solution. This muscle is considered an accessory muscle of respiration. Extensor digiti minimi muscle:This muscle arises from the anterior surface of the lateral epicondyle of the humerus. The hand (manual region) is the terminal end and focus of the upper limb. The semispinalis muscles include the semispinalis capitis, the semispinalis cervicis, and the semispinalis thoracis. All rights reserved. The muscle causes flexion of the wrist, and radial deviation when it acts with extensor carpi radialis. This muscle song will help you learn the major muscles of the human body. 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. The Colles fracture is a fracture of the distal radius (within two centimetres of the wrist joint) with associated dorsal translocation of the distal fragment. The action makes sense when you consider the muscle's points of attachment. Conventionally, a muscle origin describes the attachment of a muscle on the more stable bone. Copyright 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. In our cheat sheets, youll find the origin(s) and insertion(s) of every muscle. 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. If you have ever been to a doctor who held up a finger and asked you to follow it up, down, and to both sides, he or she is checking to make sure your eye muscles are acting in a coordinated pattern. The anterior muscles - such as the quadriceps femoris, iliopsoas, and sartorius, work as a group to flex the thigh at the hip and extend the leg at the knee. 2023 The Chemical Level of Organization, Chapter 3. lessons in math, English, science, history, and more. The lower subscapular nerve innervates the muscle and it is a branch of the posterior cord of the brachial plexus. By the end of this section, you will be able to: Identify the following muscles and give their origins, insertions, actions and innervations: The skeletal muscles are divided into axial (muscles of the trunk and head) and appendicular (muscles of the arms and legs) categories. Click the card to flip . A rule of thumb is that any muscle tendon that crosses a joint will act on that joint. Mnemonics to remember bones Read more. This injury is commonly called baseball finger. Copyright Iliacus muscle. Register now 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. Muscles always pull. It lays directly superficial to the flexor digitorum superficialis. Enrolling in a course lets you earn progress by passing quizzes and exams. The transversospinales include the semispinalis capitis, semispinalis cervicis, semispinalis thoracis, multifidus, and rotatores. There are several small facial muscles, one of which is the corrugator supercilii, which is the prime mover of the eyebrows. origin: neck Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. The muscles of the back and neck that move the vertebral column are complex, overlapping, and can be divided into five groups. You'll find this conveniently illustrated on the cheat sheets. Here I discuss an alternative way to learn muscles and their origin(s), insertion(s), and action(s).Key Takeaways. 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 [?] Bony Landmarks Types & Identification | What are Femur Landmarks? In this article we will discuss the gross (structure) and functional anatomy (movement) of the muscles of the upper limb. Here's a mnemonic that summarizes the brachioradialis and helps you to remember it. Trunk Muscles Tables PDF.docx - MUSCLE NAME ORIGIN INSERTION ACTION Phew. Due to its course it has a "serrated" or "saw-toothed" appearance. 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.