10. Muscles

Distinguish between

a. Direct and indirect muscle attachments and

b. A tendon and an aponeurosis

The more movable end of a muscle is the

(a) Insertion

(b) Belly

(c) Origin

(d) Proximal end

(e) Distal end

Levers make 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

The flexor carpi ulnaris is a muscle that adducts and flexes the hand at the wrist. The muscle attaches to both the humerus and the base of the 5th metacarpal. Based on the movement that this muscle performs, which attachment is the origin?

Which of the following muscles flexes the thigh, but also laterally flexes the vertebral column when its origin and insertion switch?

a. Sartorius muscle

b. Psoas major muscle

c. Iliacus muscle

d. Rectus abdominis muscle

In addition to acting to flex the spine and compress the abdominal contents, the abdominal muscles are extremely important in protecting and containing the abdominal viscera. What is it about the arrangement of these muscles that makes them so well suited for their job?

The muscles of facial expression are innervated by cranial nerve

(a) VII

(b) V

(c) IV

(d) VI

Elongated bursae that reduce friction and surround the tendons that cross the posterior and anterior surfaces of the wrist form___.