The triceps is the antagonist, and its action opposes that of the agonist. The transversospinales include the semispinalis capitis, semispinalis cervicis, semispinalis thoracis, multifidus, and rotatores. The lower fibersare responsible forelevation and depression. 2009. You can feel the temporalis move by putting your fingers to your temple as you chew. Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. Insertion: Crest of lesser tubercle of humerus Action: Extends, adducts, and medially rotates arm (spirals underarm to front . Iliacus muscle. Finally, synergist muscles enhance the action of the agonist. 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 It is innervated by the anterior interosseous branch. Describe the muscles of the anterior neck. All the intrinsic muscles of hand are supplied by the deep . The head is balanced, moved and rotated by the neck muscles (Table 11.5). #shorts #anatomy. Memorize Muscles, Origins, and Insertions with Cartoons and Mnemonics: 46 Muscles of the Lower Quadrant [Print Replica] Kindle Edition by Byron Moffett (Author) Format: Kindle Edition 24 ratings See all formats and editions Kindle $9.99 Read with Our Free App The nerve supply comes from the upper and lower subscapular. The hand serves as the origin and/or insertion for a vast number of muscles. Rhomboid minor muscle:This is a smaller muscle with the same shape as the rhomboid major and lies above it. 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. The thyrohyoid muscle also elevates the larynxs thyroid cartilage, whereas the sternothyroid depresses it. which stands for supraspinatus, infraspinatus, teres minor, and subscapularis. However, the anatomist knows that the arm or the brachium is purely the region between the shoulder joint and elbow. All Rights Reserved. It is innervated by the posterior interosseous branch. 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.. It inserts onto the crest of greater tubercle of the humerus. Find it on your own body if you can. Triceps Muscle Brachii Origin & Insertion | Where is the Tricep? For . 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 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. Due to its course it has a "serrated" or "saw-toothed" appearance. All content published on Kenhub is reviewed by medical and anatomy experts. 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) It is caused by damage to the extensor tendon complex as it inserts onto the distal phalanx of any of the digits. 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. Pronator teres muscle is the larger of the pronator muscles and has two heads. In anatomical terminology, chewing is called mastication. 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 genioglossus (genio = chin) originates on the mandible and allows the tongue to move downward and forward. All our four muscle chart ebooks are also available with the Latin terminology. This is a bony deformity of the finger or toes associated with rheumatoid arthritis and trauma to the end of the extended finger. This eBook contains high-quality illustrations and validated information about each muscle. It arises from the trapezium and transverse carpal ligament. 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 and Insertion The posterior muscles of the neck are primarily concerned with head movements, like extension. It is a powerful superficial muscle of the shoulder. A rotator cuff tear presents with general pain with overhead activities and may present with night pain. Semispinalis capitis: Origin: transverse processes of C7-T12. The long head arises from the supraglenoid tubercle of the scapula and passes through the intertubercular sulcus in its own synovial sheath. The biceps brachii is the agonist in forearm flexion. See our full, Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on WhatsApp (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on Skype (Opens in new window), IV Drug Use Complications & Dangers: (Endocarditis, Infection, Infectious Diseases). It acts as an adductor (to add to the body), assists in extension and medial rotation, as well as stabilization of the scapula. 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. 2023 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. However, it prevents the humeral head from slipping downwards. Muscle memory is a form of procedural memory that involves consolidating a specific motor task into memory through repetition, which has been used synonymously with motor learning. The palmar interossei are unipennate, and the dorsal interossei are bipennate. Muscle origins and insertions Many muscles are attached to bones at either end via tendons. This article will discuss the anatomy of the serratus anterior muscle. The muscle has a frontal belly and an occipital belly (near the occipital bone on the posterior part of the skull). The brevis muscle arises from the lateral epicondyle and inserts onto the dorsal base of the 3rd metacarpal. These are innervated by the ulnar nerve. The insertion is usually distal,. insertion: mediar aspect of humerus, Origin posterior border of iliac crest The scaphoid bone forms the floor of the anatomical snuffbox and articulates with the radius at the wrist. Bone Tissue and the Skeletal System, Chapter 12. Muscles of Face ----- skull----- skin of face----- facial expression Orbicularis oculi frontal and maxilla & tissue of eyelid closes eye ligaments around orbit 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. Teres Major. Pectoralis major muscle :This is a superficial, large, fan shaped muscle that makes up the bulk of the pectoral (chest) region. It allows for powerful elbow extension (such as doing a pushup). Each of these actions can be described in one of two ways. For example, the brachialis is a synergist of the biceps brachii during forearm flexion. Do you find it difficult to memorize the muscles of the hand? Additional muscles of facial expression are presented in Figure 11.4.2. Muscles that move the eyeballs are extrinsic, meaning they originate outside of the eye and insert onto it. Many muscles are attached to bones at either end via tendons. Read more. Supraspinatus tears result in inability to initiate shoulder abduction. It acts as an adductor, medial rotator, and flexor of the arm at the shoulder joint. Next to each muscle, youll find its origin(s), insertion(s), innervation(s) and function(s). Supraspinatus muscle:This rotator cuff muscle is deep and originates from the supraspinous fossa which is located on the posterior superior portion of the scapula. action: elevates scapula, The posterior hamstring muscle group - Those in the same compartment will have the same action. Some axial muscles cross over to the appendicular skeleton. This expression of trauma makes the hand appear to be dorsiflexed. 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.