61) Smooth muscle cells

A) are innervated by motor neurons.

B) are larger than cardiac muscle cells.

C) are multinucleate.

D) contain intercalated discs.

E) are spindle-shaped.

62) Which of the following is characteristic of cardiac muscle?

A) Cardiac muscle cells are striated.

B) Cardiac muscle cells achieve tetany with every contraction.

C) Cardiac muscle fibers are multinucleated.

D) Cardiac muscle fibers are faster than skeletal muscles.

E) Neurons that innervate cardiac muscle tissue are under voluntary control.

63) Which of the following is a stimulus for contraction in skeletal muscle?

A) epinephrine

B) thyroid hormone

C) testosterone

D) parathyroid hormone

E) acetylcholine

64) Smooth muscle

A) does not use calcium.

B) is not resistant to fatigue.

C) contracts faster than skeletal muscle.

D) does not undergo tetanus.

E) uses primarily aerobic metabolism.

65) The less-movable end of a skeletal muscle is the

A) insertion.

B) belly.

C) origin.

D) proximal end.

E) distal end.

66) Which of the following terms is a descriptive word for a muscle’s action?

A) obliques

B) costalis

C) biceps

D) adductor

E) pectinate

67) Muscles whose names contain the root cervi- would be found in the

A) head.

B) neck.

C) chest.

D) abdomen.

E) groin.

68) Which of the following muscles is named for its shape?

A) pectoralis major

B) biceps brachii

C) deltoid

D) erector spinae

E) tibialis anterior

69) Which of the following muscles functions to maintain an erect spinal column and head?

A) erector spinae

B) biceps brachii

C) triceps brachii

D) rectus femoris

E) biceps femoris

70) Which of the following is a muscle that originates from the zygomatic arch and functions in elevating the mandible?

A) masseter

B) frontalis

C) digastric

D) temporalis

E) medial pterygoid