chp 8

CHAPTER 8 The Muscular System
Multiple-Choice
Choose the one alternative that best completes the statement or answers the question.
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
Reference: Overview of Muscle Tissue
Degree of Difficulty: Medium

2.

The structure made of dense irregular connective tissue that holds muscle fascicles together and separates them into functional groups is
A) epimysium.
B) endomysium.
C) perimysium.
D) superficial fascia.
E) deep fascia.
Answer: C
Reference: Skeletal Muscle Tissue
Degree of Difficulty: Medium

3.

Each muscle fibers is covered by
A) superficial fascia.
B) deep fascia.
C) perimysium.
D) epimysium.
E) endomysium.
Answer: C
Reference: Skeletal Muscle Tissue
Degree of Difficulty: Medium

4.

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
Reference: Skeletal Muscle Tissue
Degree of Difficulty: Medium

5.

The sarcomere is the area between two
A) Z discs.
B) I bands.
C) A bands.
D) H zones.
E) B lines.
Answer: A
Reference: Skeletal Muscle Tissue
Degree of Difficulty: Medium

6.

The pigment in the muscle fibers that stores oxygen is

A) hemoglobin.
B) myoglobin.
C) melanin.
D) melanin.
E) glycogen.
Answer: B
Reference: Skeletal Muscle Tissue
Degree of Difficulty: Medium
7.

The neurotransmitter at the neuromuscular junction is
A) norepinephrine.
B) acetylcholine.
C) adrenaline.
D) calcium.
E) glycine.
Answer: B
Reference: Contraction and Relaxation of Skeletal Muscle
Degree of Difficulty: Medium

8.

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
Reference: Skeletal Muscle Tissue