BIOL 207 Study Guide - Midterm Guide: Latissimus Dorsi Muscle, Abdomen, Extensor Digiti Minimi Muscle
Document Summary
Depresses eyebrows, closes lids: zygomaticus major & minor. Pulls angle of mouth upward and backward into a smile: orbicularis oris. Closes lips, purses (puckers) lips into a: masseter, mentalis, platysma, sternocleidomastoid kiss. Raises and protrudes mandible to close the mouth. Raises and protrudes lower lips as in doubt or disdain. Muscle: deltoid, pectoralis major, serratus anterior, external intercostals, internal intercostals, diaphragm, linea alba. Increases vertical length of thoracic cavity during inspiration. Tendinous raphe (seam) running longitudinally along the abdomen: rectus abdominus and/or sheath. Flexes vertebral column (sheath is an: external oblique, internal oblique, transversus abdominis aponeurosis) Adducts scapula (fixator muscle - holds: supraspinatus, infraspinatus, subscapularis, latissimus dorsi, teres major scapula in place) Medially rotates, extends, and adducts arm; draws down shoulder. Muscle: deltoid, biceps brachii, brachialis, triceps brachii. Muscle: brachioradialis, flexor carpi radialis, palmaris longus. Flexes wrist (its tendon is above the retinaculum) Muscles: anconeus, flexor carpi ulnaris, extensor carpi ulnaris. Extends and adducts wrist: extensor digitorum communis.
