BIOL301 Study Guide - Abductor Pollicis Longus Muscle, Extensor Hallucis Longus Muscle, Extensor Pollicis Longus Muscle
2 Feb 2014
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Document Summary
Facial muscles non-verbal communication (figures 11. 8, 11. 9) For mastication temporalis (elevate and retract) and masseter (elevate and protract) Anterior neck muscles aid in swallowing (figure 7. 17) Neck and vertebral column movement to head and trunk extension (figure 11. 12) Splenius capitis & cervicis single turns head; both extends neck (head back) Sternocleidomastoid single provides lateral flexion; both flexes neck. Erector spinae (ilicostalis, longissimus, spinalis) posture and extension. Quadratus lumborum single provides lateral flexion; both = extension. External intercostal elevates ribs; expands chest (inhalation) Diaphragm flattens and expands thoracic cavity upon contraction/exhalation. Internal intercostal depresses ribs; compresses chest (exhalation) Internal oblique lateral flexion and rotation (towards midline of body) External oblique lateral flexion and rotation. Rectus abdominis flexion and rotation (sit-ups) Pectoralis minor moves scapula forward and downward. Trapezius elevates, retracts, and rotates scapula. Rhomboid (minor and major) stabilize scapula. Pectoralis major and coracobrachialis (cid:224) flexes and adducts (anterior) Latissimus dorsi arm extension; shoulder adduction and medial rotation (posterior)
