Pectoral Muscles Anatomy - Mnemonic for upper chest muscles | 3d Trunk Muscles Tables PDF.docx - MUSCLE NAME ORIGIN INSERTION ACTION Due to these attachments, the triceps is stretched during forearm flexing. The latissimus dorsi is a large back muscle responsible for the bulk of adduction of the arm (pulling the arm to the sides of . Weve created muscle anatomy charts for every muscle containing region of the body: Each chart groups the muscles of that region into its component groups, making your revision a million times easier. The shoulder moves at the glenohumeral joint. Validated and aligned with popular anatomy textbooks, these muscle cheat sheets are packed with high-quality illustrations. Long head originates from the Supraglenoid cavity. See at a glance which muscle is innervated by which nerve. 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). The muscle has a frontal belly and an occipital belly (near the occipital bone on the posterior part of the skull).
Any Tips on memorizing muscle insertions, Origin, And Action? It passes laterally to insert onto the lesser tubercle of the humerus. The actions and innervation are the same as the rhomboid major. Try refreshing the page, or contact customer support. I would definitely recommend Study.com to my colleagues. Separate the muscles into compartments (already done for the leg muscles). The muscles acts to flex the proximal IP joints as it primary function. The long head arises from the infraglenoid tubercle and consists of mainly type 2b fibers. Learn Muscles for Massage Our online MBLEx Course is designed to help massage students learn and memorize all the muscles of the body (origins, insertions and actions). It inserts onto the crest of greater tubercle of the humerus. Reading time: about 1 hour. It consists mainly of type 2a fibers and provides power and endurance to elbow extension. It also causes contributes to flexion of the proximal IP, MP, and wrist joints, although these are its secondary function. 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. The two bellies are connected by a broad tendon called the epicranial aponeurosis, or galea aponeurosis (galea = apple). For . These final muscles make up your calf. origin: along spinus process of vertebrae and occipital bone Check out the following quiz and the learn the muscles of the arm and shoulder. Rhomboid major muscle:This is a ribbon like rhomboid shaped muscle that arises from the spinous processes of the T2-T5 (T = thoracic) vertebraeand inserts onto the medial border of the scapula. All content published on Kenhub is reviewed by medical and anatomy experts. Why are the muscles of the face different from typical skeletal muscle? It commonly occurs following a fall onto an outstretched hand (FOSH). This eBook contains high-quality illustrations and validated information about each muscle. It inserts onto the ulnar aspect of the 5th proximal phalanx. It passes anteriorly and around the thoracic cage as if wrapping. The extrinsic muscles of the hand originate outside the hand, commonly the forearm, and insert into hand structures. Its supinating effect are maximal when the elbow is flexed. The nerve supply is from the long thoracic nerve, which arises from the C5, C6, and C7 nerve roots. It also acts as an extensor of the wrist and radial deviator. 1.2 Structural Organization of the Human Body, 2.1 Elements and Atoms: The Building Blocks of Matter, 2.4 Inorganic Compounds Essential to Human Functioning, 2.5 Organic Compounds Essential to Human Functioning, 3.2 The Cytoplasm and Cellular Organelles, 4.3 Connective Tissue Supports and Protects, 5.3 Functions of the Integumentary System, 5.4 Diseases, Disorders, and Injuries of the Integumentary System, 6.6 Exercise, Nutrition, Hormones, and Bone Tissue, 6.7 Calcium Homeostasis: Interactions of the Skeletal System and Other Organ Systems, 7.6 Embryonic Development of the Axial Skeleton, 8.5 Development of the Appendicular Skeleton, 10.3 Muscle Fiber Excitation, Contraction, and Relaxation, 10.4 Nervous System Control of Muscle Tension, 10.8 Development and Regeneration of Muscle Tissue, 11.1 Describe the roles of agonists, antagonists and synergists, 11.2 Explain the organization of muscle fascicles and their role in generating force, 11.3 Explain the criteria used to name skeletal muscles, 11.4 Axial Muscles of the Head Neck and Back, 11.5 Axial muscles of the abdominal wall and thorax, 11.6 Muscles of the Pectoral Girdle and Upper Limbs, 11.7 Appendicular Muscles of the Pelvic Girdle and Lower Limbs, 12.1 Structure and Function of the Nervous System, 13.4 Relationship of the PNS to the Spinal Cord of the CNS, 13.6 Testing the Spinal Nerves (Sensory and Motor Exams), 14.2 Blood Flow the meninges and Cerebrospinal Fluid Production and Circulation, 16.1 Divisions of the Autonomic Nervous System, 16.4 Drugs that Affect the Autonomic System, 17.3 The Pituitary Gland and Hypothalamus, 17.10 Organs with Secondary Endocrine Functions, 17.11 Development and Aging of the Endocrine System, 19.2 Cardiac Muscle and Electrical Activity, 20.1 Structure and Function of Blood Vessels, 20.2 Blood Flow, Blood Pressure, and Resistance, 20.4 Homeostatic Regulation of the Vascular System, 20.6 Development of Blood Vessels and Fetal Circulation, 21.1 Anatomy of the Lymphatic and Immune Systems, 21.2 Barrier Defenses and the Innate Immune Response, 21.3 The Adaptive Immune Response: T lymphocytes and Their Functional Types, 21.4 The Adaptive Immune Response: B-lymphocytes and Antibodies, 21.5 The Immune Response against Pathogens, 21.6 Diseases Associated with Depressed or Overactive Immune Responses, 21.7 Transplantation and Cancer Immunology, 22.1 Organs and Structures of the Respiratory System, 22.6 Modifications in Respiratory Functions, 22.7 Embryonic Development of the Respiratory System, 23.2 Digestive System Processes and Regulation, 23.5 Accessory Organs in Digestion: The Liver, Pancreas, and Gallbladder, 23.7 Chemical Digestion and Absorption: A Closer Look, 25.1 Internal and External Anatomy of the Kidney, 25.2 Microscopic Anatomy of the Kidney: Anatomy of the Nephron, 25.3 Physiology of Urine Formation: Overview, 25.4 Physiology of Urine Formation: Glomerular Filtration, 25.5 Physiology of Urine Formation: Tubular Reabsorption and Secretion, 25.6 Physiology of Urine Formation: Medullary Concentration Gradient, 25.7 Physiology of Urine Formation: Regulation of Fluid Volume and Composition, 27.3 Physiology of the Female Sexual System, 27.4 Physiology of the Male Sexual System, 28.4 Maternal Changes During Pregnancy, Labor, and Birth, 28.5 Adjustments of the Infant at Birth and Postnatal Stages. Flex and extend the muscle and feel its movements at the origin, midpoint, and insertion. : imagine holding a suitcase or briefcase at your side. My insertion is the angles of the ribs and transverse processes of C4-C6. It inserts onto the radial aspect of the 1st metacarpal. It also flexes the MP and wrist joints, although these are its secondary functions. Triceps Muscle Brachii Origin & Insertion | Where is the Tricep? 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). All our four muscle chart ebooks are also available with the Latin terminology. Resulting in the inability to straighten the digit. It inserts onto the medial border of the scapula just superior to the rhomboid major. The tendon of the muscle passes in its own tunnel to enter the palm and it inserts onto the base of the 1st distal phalanx. The splenius muscles originate at the midline and run laterally and superiorly to their insertions. However, it prevents the humeral head from slipping downwards. As a result it acts as a flexor, extensor, and abductor of the shoulder. Thenar eminence:It consists of three muscle: flexor pollicis brevis, abductor pollicis brevis, and the opponens pollicis. It is the prime mover in forward reaching and pushing down. It also spreads the digits aparts during extension of the MP joints. For origins and insertions, I learned the exceptions in each compartment/the ones that stick out. It is innervated by the radial nerve, a portion of the posterior branch of the brachial plexus. We will use examples to describe how the origin and insertion affect the action of a skeletal muscle. remember this mnemonic: Aortic hiatus=12 letters =T12 Esophageal =10 letters= T10 Vena cava = 8 letters = T8
Leif Saul, University of Colorado Quiz & Worksheet - Muscle Origin and Insertion | Study.com Biceps femoris, semitendinosus, and semimembranosus. 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 Articulation Movement Overview & Types | How Muscular Contraction Causes Articulation, Semispinalis Capitis | Origin, Insertion & Action, Soft Tissue Injury Repair: Stages & Massage Therapy Support, SAT Subject Test Biology: Practice and Study Guide, UExcel Anatomy and Physiology II: Study Guide & Test Prep, UExcel Anatomy & Physiology: Study Guide & Test Prep, Praxis Biology and General Science: Practice and Study Guide, Praxis Biology: Content Knowledge (5236) Prep, Introduction to Biology: Certificate Program, Human Anatomy & Physiology: Help and Review, UExcel Microbiology: Study Guide & Test Prep, UExcel Basic Genetics: Study Guide & Test Prep, Introduction to Genetics: Certificate Program, Middle School Life Science: Help and Review, Holt McDougal Modern Biology: Online Textbook Help, Biology 101 Syllabus Resource & Lesson Plans, Create an account to start this course today. Simplify your retention of the thenar muscles by learning the following mnemonic! Teres minor:This muscle arises from the lateral border of the scapula and inserts onto the greater tubercle of the humerus. L: lateral two lumbricals. 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 . The muscle origin often describes the more proximal attachment point of the muscle, while the muscle insertion point refers to the distal attachment. | 15 The muscles of the head and neck are all axial. 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. As the muscles pass anteriorly to the MP joints and insert they cause flexion of the MP joint and extension of the IP joints. Tongue muscles can be extrinsic or intrinsic. It runs down the posterior compartment of the forearm and inserts into the middle and distal phalanges of the 2nd to 5th digits. It divides and allows the tendon of flexor digitorum profundus to pass through at Campers chiasm (tendon split). The intrinsic muscles of the hand contain the origin and insertions within the carpal and metacarpal bones. We will also discuss the clinical relevance of the upper limb. Find it on your own body if you can. The nerve supply comes from the upper and lower subscapular. The semispinalis muscles include the semispinalis capitis, the semispinalis cervicis, and the semispinalis thoracis. Iliacus muscle. It is also capable of weakly supinating and pronating the forearm. Muscles of the Posterior Neck and the Back. 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. Most anatomy courses will require that you at least know the name and location of the major muscles, though some anatomy courses will also require you to know the function (or action), the insertion and origin, and so on.