Test Bank for CHAPTER 8 The Muscular System

CHAPTER 8 The Muscular System

Multiple-Choice



1. Which of the following is NOT a function of muscle tissue?
A) Heat production
B) Regulation of organ volume

C) Vitamin D production

D) Body movements
E) Body position
Answer: C

1 The structure made of dense irregular connective tissue that holds muscle fasci-
cles together and separates them into functional groups is
A) epimysium.
B) endomysium.

C) perimysium.
D) superficial fascia.
E) deep fascia.
Answer: C

1 Each muscle fibers is covered by
A) superficial fascia.
B) deep fascia.

C) perimysium.
D) epimysium.
E) endomysium.
Answer: C

1 The portion of the sarcomere mostly composed of thick filaments is the
A) H zone.
B) Z discs.
C) I band.

D) A band.
E) sarcomere.
Answer: D

1 The sarcomere is the area between two

, A) Z discs.
B) I bands.
C) A bands.
D) H zones.
E) B lines.
Answer: A


1 The pigment in the muscle fibers that stores oxygen is
A) hemoglobin.

B) myoglobin.
C) melanin.
D) melanin.
E) glycogen.
Answer: B

1 The neurotransmitter at the neuromuscular junction is
A) norepinephrine.

B) acetylcholine.
C) adrenaline.
D) calcium.
E) glycine.
Answer: B

1 Tunnel-like extensions of the sarcolemma into the muscle fiber are
A) sarcomeres.
B) myofibrils.

C) transverse tubules.
D) tropomyosin.
E) myosin cross bridges.
Answer: C

1 The structure storing calcium in the skeletal muscle fibers at rest is the
A) endoplasmic reticulum.
B) nucleus.
C) Golgi apparatus.

D) sarcoplasmic reticulum.
E) T –Tubule.
Answer: D

1 All of the following are proteins of myofilaments EXCEPT
A) actin.
B) myosin.