Anatomy & Physiology I and II

Anatomy & Physiology Study Guide

11.8 Chapter Eleven Practice Exam 1. The bundles of muscle fibers within a skeletal muscle are called _____________________. a. Muscles b. Fascicles c. Fibers d. Myofilaments e. Groups 2. Levers make muscle action more versatile by all of the following, except _____________________. a. Changing the location of the muscle’s insertion b. Changing the speed of movement produced by an applied force c. Changing the distance of movement produced by an applied force d. Changing the strength of an applied force e. Changing the direction of an applied force 3. The more movable end of a muscle is the _____________________. a. Insertion b. Belly c. Origin d. Proximal end e. Distal end 4. The muscles of facial expression are innervated by cranial nerve _____________________. a. VII b. V c. IV d. VI 5. The strongest masticatory muscle is the _____________________ muscle. a. Pterygoid b. Masseter c. Temporalis d. Mandible

6. The muscle that rotates the eye medially is the _____________________ muscle. a. Superior oblique b. Inferior rectus c. Medial rectus d. Lateral rectus 7. Important flexors of the vertebral column that act in opposition to the erector spinae are the _____________________ muscles. a. Rectus abdominis b. Longus capitis c. Longus colli d. Scalene 8. The major extensor of the elbow is the_____________________ muscle. a. Triceps brachii b. Biceps brachii c. Deltoid d. Subscapularis 9. The muscles that rotate the radius without producing either flexion or extension of the elbow are the _____________________muscles. a. Brachialis and brachioradialis b. Pronator teres and supinator c. Biceps brachii and triceps brachii d. A, B, and C 10. The powerful flexors of the hip are the _____________________ muscles. a. Piriformis b. Obturator c. Pectineus d. Iliopsoas

Answer key found on page 365.

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