Nerve: femoral (L2-L4). Action: changes tension of vocal cords. In addition, cardiac muscle: is stimulated by blood—borne molecules, can conduct electrical impulses from cell to cell, and can independently generate rhythmical contractions. Nerve: facial (CN VII) Action: closes eyelids, lifts cheeks, compresses lacrimal sac. Arm muscle. Here is what agonist/antagonist muscle groups are and how they help build muscle faster than traditional workouts. Antagonists play two important roles in muscle function: (1) they maintain body or limb position, such as holding the arm out or standing erect; and (2) they control rapid movement, as in shadow boxing without landing a punch or the ability to check the motion of a limb. Action: elevates mandible to close jaw. Origin: anterior belly attaches to the digastric fossa in mandible at base of anterior midline, posterior belly attaches to mastoid process. Nerve: dorsal scapular (C4-C5). Hand muscle. Insertion: common extensor tendon of fingers. Synonym: Muscle of mastication. Insertion: skin of eyebrows, root of nose. It extends upward and backward and is inserted on the epiglottis. Muscle of mastication. Insertion: deltoid tuberosity on the lateral shaft of the humerus. Forearm muscle. The lateral or the medial pterygoid muscle. Nerve: radial (C5-C7). The abdominal muscles are made up of the cremaster, external abdominal oblique, iliacus, psoas major, pyramidalis, quadratus lumborum, rectus abdominis, and transversus abdominis muscles. A muscle with the opposite action of the prime mover is called an antagonist. The abductor or flexor muscle of the thumb. A muscle arising on the inner surface of the thyroid cartilage. Smooth muscle tissue tends to occur as sheets and is typically found in the walls of tubes, e.g., arteries, and sacs, e.g., the gastrointestinal system. Insertions: contralateral arytenoid cartilage. Suboccipital: obliquus capitis and rectus capitis muscles. Typically it is a mass of fleshy tissue, attached at each extremity by means of a tendon to a bone or other structure. Pelvic muscle, part of levator ani. Nerve: radial (C7-C8). Origins: arytenoid cartilage. Origin: epicranial (scalp) aponeurosis. Insertion: distal phalanges of fingers (digits 2-5). A muscle with three tendons of origin and a single, common insertion. Neck muscle with two bellies. ... which provide opposite antagonistic actions to the muscles of the upper back. Nerve: facial (CN VII). Insertion: mastoid process. Action: flexes leg, rotates leg laterally, extends thigh. Action: turns eye up and outward with lateral rotation. Action: dorsiflexes big toe. Insertion: lesser trochanter of femur, psoas major tendon. Insertion: medial surface of ramus and angle of mandible. Chest wall muscle. 2. The superior gemellus muscle arises from the ischial spine and is innervated by the nerve to the obturator internus; the inferior arises from the ischial tuberosity and is innervated by the femoral nerve. Action: plantarflexes foot, flexes knee. Insertion: anterior side of vertebral edge of scapula. Insertion: distal phalanx of thumb. In the muscle tissue, the cardiac muscle cells are connected in branching networks. Origin: front of pubis (below crest). Insertion: posterior edge of lateral clavicle, acromion, posterior edge of spine of scapula. Origin: distal two-thirds of posterior tibia. antagonist - a muscle that relaxes while another contracts; "when bending the elbow the triceps are the antagonist". Nerve: ulnar (C8-T1. For every direct action made by a muscle, an antagonistic muscle can cause an opposite movement. Leg muscle. Action: adducts hand, extends wrist. What are muscle cramps caused from? Origin: pterygomandibular raphe and alveolar processes of jaws. Why do my muscles sometimes burn when I'm exercising? Action: adducts and medially rotates arm. Action: tenses (stretches) vocal cords. Nerve: ulnar, median (C8-T1). Action: elevates eyebrows, wrinkles forehead. Action: flexes thigh and leg, laterally rotates thigh. Insertion: linea aspera of femur. Coactivation of antagonist muscles is involved in many types of joint movements [147,148]. 1. In each cell, the myofibrils are all aligned in the same direction and are parceled into longitudinal blocks (called sarcomeres) of similar lengths. Abductor digiti minimi, abductor pollicis brevis, adductor pollicis, dorsal interosseous, flexor digiti minimi, flexor pollicis brevis, lumbrical, opponens digiti minimi, opponens pollicis, palmaris brevis, and palmar interosseous muscles. antagonistic muscleone that counteracts the action of another (the agonistic muscle). Nerve: superior gluteal (L4-L5). Action: adducts, flexes, and rotates thigh medially. Definition of Antagonist Muscle In your upper arm, there are two main muscles. Insertion: anterior half of iliac crest, rectus sheath, inguinal ligament. Origin: crest and symphysis of pubis. Origin: medial half of clavicle, sternum, costal cartilages 4-6. The supply of ATP comes from MITOCHONDRIA between the fibrils. https://medical-dictionary.thefreedictionary.com/Antagonist+muscle. A drug or other chemical substance capable of reducing the physiological activity of another chemical substance; refers especially to a drug that opposes the action of a drug or other chemical substance on the nervous system by combining with and blocking the nerve receptor. Muscles that pull against gravity to maintain normal posture. Muscle derived from mesodermal somites, including most skeletal muscle. Action: adducts and medially rotates arm. Spermatic cord muscle. Controlled movements involve two opposing muscles: the agonist muscle produces the main action, while the antagonist muscle produces the opposite action to a lesser degree. Action: tenses abdomen, flexes vertebral column. Gluteal region: gemelli, gluteus maximus, gluteus medius, gluteus minimus, obturator externus, obturator, internus, piriformis, quadratus femoris, and tensor fasciae lata muscles. Definition of antagonistic action in the Legal Dictionary - by Free online English dictionary and encyclopedia. Action: extends thigh, flexes and medially rotates leg. Insertions: extensor tendons of digits 2-5. The three-layered muscular wall of the urinary bladder. Thigh muscle. Action: extends thigh, flexes and medially rotates leg. The set of pelvic floor muscles, which include the iliococcygeus, levator prostatae or vaginal sphincter, pubococcygeus, and puborectalis muscles. It really hurts! Pectoralis major, pectoralis minor, serratus anterior, subclavius, subscapularis, or teres major muscle. Origin: infraglenoid tubercle of scapula, posterior of proximal humerus, posterior of distal humerus. Origin: dorsolateral surface of calcaneus. Origin: medial side of femur Insertion: common tendon of quadratus muscles, tibial tuberosity via patellar ligament. Action: pulls eyebrows toward midline and downward. Antagonist. Action: adducts, flexes, and rotates thigh medially. Both muscles hold the head of the femur in the acetabulum, rotate (laterally) the thigh in extension, and abduct the thigh when it is flexed. Nerve: spinal T7-T12. Medical Author: William C. Shiel Jr., MD, FACP, FACR; Antagonist: A substance that acts against and blocks an action. Forearm muscle. Action: abducts thumb, aides in opposition with digit 5. The EOM are: the inferior and superior oblique muscles, and the lateral, medial, inferior, and superior rectus muscles. Origin: lateral epicondyle of humerus. One of the major muscles that stabilizes and controls the pressure inside the trunk; these are the pelvic floor, abdominal wall, back, and diaphragm muscles. (05 Mar 2000) Lexicographical Neighbors of Antagonistic Muscles Nerves: cervical spinal C4-C8. Actions: extends (bends backward) the vertebral column and neck, twists the back. From Dorland's, 2000. Insertion: lateral condyle of tibia, head of fibula. 9 synonyms of antagonist from the Merriam-Webster Thesaurus, plus 27 related words, definitions, and antonyms. Q. Antagonist and agonist muscles often occur in pairs, called antagonistic pairs.As one muscle contracts, the other relaxes. In STRIATED MUSCLE, each cell contains a bundle of MYOFIBRILS each exhibiting a banding pattern and being made up of a number of SARCOMERES arranged end to end. Nerve: suprascapular (C4-C6). Action: abducts arm. Nerve: sciatic (L5-S2). Insertion: proximal end of fifth metacarpal. Nerve: musculocutaneous and radial (C5-C7). 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