, BIOS 252 Anatomy and Physiology II Exam 1 –Actual
Questions with Revised Answers, 100% Verified
- Chamberlain University
Question 1
Which type of muscle tissue is striated, voluntary, and multinucleated?
A) Cardiac muscle
B) Smooth muscle
C) Skeletal muscle
D) Visceral muscle
Answer: C) Skeletal muscle
Rationale: Skeletal muscle is characterized by long, cylindrical, multinucleated fibers
with striations. It is under voluntary control and attached to bone and skin . Cardiac
muscle is striated but involuntary, while smooth muscle is non-striated and involuntary .
Question 2
Cardiac muscle is best described as:
A) Non-striated, involuntary, found in hollow organs
B) Striated, voluntary, multinucleated
C) Striated, involuntary, with intercalated discs
D) Non-striated, voluntary, spindle-shaped
Answer: C) Striated, involuntary, with intercalated discs
Rationale: Cardiac muscle is striated like skeletal muscle but is involuntary. It is found
exclusively in the heart and features intercalated discs, which facilitate synchronized
contractions . The fibers are short, branched, and typically uninucleated .
Question 3
,Which muscle tissue type is non-striated, involuntary, and found in hollow organs?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Both A and B
Answer: C) Smooth muscle
Rationale: Smooth muscle cells are spindle-shaped, uninucleated, and lack striations.
They are found in the walls of hollow organs (e.g., digestive tract, blood vessels, bladder)
and are under involuntary control .
Question 4
What are the five functions of muscle tissue? (Select all that apply)
A) Excitability
B) Conductivity
C) Extensibility
D) Elasticity
E) Contractility
Answer: A, B, C, D, E – All of the above
Rationale: The five characteristic functions of muscle tissue are:
1. Excitability – Ability to respond to stimuli
2. Conductivity – Ability to propagate electrical signals
3. Extensibility – Ability to be stretched without damage
4. Elasticity – Ability to return to original shape after stretching
5. Contractility – Ability to shorten forcibly when stimulated
Question 5
The ability of a muscle to respond to a stimulus is called:
, A) Contractility
B) Excitability
C) Extensibility
D) Elasticity
Answer: B) Excitability
Rationale: Excitability is the ability of a muscle cell to respond to stimuli (chemical,
electrical, or mechanical) .
Question 6
The ability of a muscle to shorten forcibly when stimulated is called:
A) Excitability
B) Conductivity
C) Contractility
D) Extensibility
Answer: C) Contractility
Rationale: Contractility is the unique ability of muscle tissue to shorten forcibly,
generating tension and movement .
Question 7
Smooth muscle cells are typically:
A) Multinucleated and cylindrical
B) Uninucleated and spindle-shaped
C) Branched with intercalated discs
D) Striated and voluntary
Answer: B) Uninucleated and spindle-shaped
Rationale: Smooth muscle cells are spindle-shaped, have a single nucleus, and lack
striations. They are found in hollow organs and are under involuntary control .
Questions with Revised Answers, 100% Verified
- Chamberlain University
Question 1
Which type of muscle tissue is striated, voluntary, and multinucleated?
A) Cardiac muscle
B) Smooth muscle
C) Skeletal muscle
D) Visceral muscle
Answer: C) Skeletal muscle
Rationale: Skeletal muscle is characterized by long, cylindrical, multinucleated fibers
with striations. It is under voluntary control and attached to bone and skin . Cardiac
muscle is striated but involuntary, while smooth muscle is non-striated and involuntary .
Question 2
Cardiac muscle is best described as:
A) Non-striated, involuntary, found in hollow organs
B) Striated, voluntary, multinucleated
C) Striated, involuntary, with intercalated discs
D) Non-striated, voluntary, spindle-shaped
Answer: C) Striated, involuntary, with intercalated discs
Rationale: Cardiac muscle is striated like skeletal muscle but is involuntary. It is found
exclusively in the heart and features intercalated discs, which facilitate synchronized
contractions . The fibers are short, branched, and typically uninucleated .
Question 3
,Which muscle tissue type is non-striated, involuntary, and found in hollow organs?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Both A and B
Answer: C) Smooth muscle
Rationale: Smooth muscle cells are spindle-shaped, uninucleated, and lack striations.
They are found in the walls of hollow organs (e.g., digestive tract, blood vessels, bladder)
and are under involuntary control .
Question 4
What are the five functions of muscle tissue? (Select all that apply)
A) Excitability
B) Conductivity
C) Extensibility
D) Elasticity
E) Contractility
Answer: A, B, C, D, E – All of the above
Rationale: The five characteristic functions of muscle tissue are:
1. Excitability – Ability to respond to stimuli
2. Conductivity – Ability to propagate electrical signals
3. Extensibility – Ability to be stretched without damage
4. Elasticity – Ability to return to original shape after stretching
5. Contractility – Ability to shorten forcibly when stimulated
Question 5
The ability of a muscle to respond to a stimulus is called:
, A) Contractility
B) Excitability
C) Extensibility
D) Elasticity
Answer: B) Excitability
Rationale: Excitability is the ability of a muscle cell to respond to stimuli (chemical,
electrical, or mechanical) .
Question 6
The ability of a muscle to shorten forcibly when stimulated is called:
A) Excitability
B) Conductivity
C) Contractility
D) Extensibility
Answer: C) Contractility
Rationale: Contractility is the unique ability of muscle tissue to shorten forcibly,
generating tension and movement .
Question 7
Smooth muscle cells are typically:
A) Multinucleated and cylindrical
B) Uninucleated and spindle-shaped
C) Branched with intercalated discs
D) Striated and voluntary
Answer: B) Uninucleated and spindle-shaped
Rationale: Smooth muscle cells are spindle-shaped, have a single nucleus, and lack
striations. They are found in hollow organs and are under involuntary control .
