BIOL 251 Anatomy and Physiology I Exam 3 - Chapters 9 and
10 with 120 Questions and Correct Answers Graded A+/ BSU
Biol 251 A & P I Exam 3 Review 2026-2027
Section 1: Muscle Tissue Characteristics (Q1–20)
Q1. Which of the following is NOT a function of skeletal muscle?
A) Moving the skeleton
B) Maintaining posture
C) Generating heat
D) Propelling blood through arteries
Answer: D
Rationale: Propelling blood is a function of cardiac muscle (heart) and smooth
muscle (vessel walls), not skeletal muscle.
Q2. Which property of muscle refers to its ability to shorten forcibly?
A) Excitability
B) Conductivity
C) Contractility
D) Elasticity
Answer: C
Rationale: Contractility is the unique ability of muscle cells to shorten and
generate tension.
Q3. The ability of a muscle to be stretched without damage is called:
A) Elasticity
B) Extensibility
C) Excitability
D) Contractility
,Answer: B
Rationale: Extensibility allows muscle to stretch when opposing muscles contract
or when the muscle is passively lengthened.
Q4. Which type of muscle tissue is striated, branched, and contains intercalated
discs?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Multiunit smooth muscle
Answer: B
Rationale: Cardiac muscle cells are striated, branched, and connected by
intercalated discs containing gap junctions.
Q5. Smooth muscle is characterized by all of the following EXCEPT:
A) Non-striated appearance
B) Involuntary control
C) Presence of sarcomeres
D) Found in walls of hollow organs
Answer: C
Rationale: Smooth muscle lacks sarcomeres and the regular banding pattern seen
in skeletal and cardiac muscle.
Q6. The dense irregular connective tissue that surrounds an entire skeletal muscle
is the:
A) Endomysium
B) Perimysium
C) Epimysium
D) Sarcolemma
, Answer: C
Rationale: Epimysium is the outermost layer; it blends with deep fascia and
separates muscle from surrounding tissues.
Q7. Which connective tissue layer wraps individual muscle fibers?
A) Epimysium
B) Perimysium
C) Endomysium
D) Fascia
Answer: C
Rationale: Endomysium is a thin areolar connective tissue layer around each
muscle fiber (cell).
Q8. A fascicle is defined as:
A) A single muscle fiber
B) A bundle of muscle fibers surrounded by perimysium
C) The entire muscle belly
D) The plasma membrane of a muscle cell
Answer: B
Rationale: Fascicles are visible to the naked eye; many fascicles make up a whole
muscle.
Q9. The plasma membrane of a muscle fiber is specifically called the:
A) Sarcoplasm
B) Sarcolemma
C) Sarcoplasmic reticulum
D) T-tubule
Answer: B
Rationale: "Sarco-" means muscle; sarcolemma conducts action potentials.
10 with 120 Questions and Correct Answers Graded A+/ BSU
Biol 251 A & P I Exam 3 Review 2026-2027
Section 1: Muscle Tissue Characteristics (Q1–20)
Q1. Which of the following is NOT a function of skeletal muscle?
A) Moving the skeleton
B) Maintaining posture
C) Generating heat
D) Propelling blood through arteries
Answer: D
Rationale: Propelling blood is a function of cardiac muscle (heart) and smooth
muscle (vessel walls), not skeletal muscle.
Q2. Which property of muscle refers to its ability to shorten forcibly?
A) Excitability
B) Conductivity
C) Contractility
D) Elasticity
Answer: C
Rationale: Contractility is the unique ability of muscle cells to shorten and
generate tension.
Q3. The ability of a muscle to be stretched without damage is called:
A) Elasticity
B) Extensibility
C) Excitability
D) Contractility
,Answer: B
Rationale: Extensibility allows muscle to stretch when opposing muscles contract
or when the muscle is passively lengthened.
Q4. Which type of muscle tissue is striated, branched, and contains intercalated
discs?
A) Skeletal muscle
B) Cardiac muscle
C) Smooth muscle
D) Multiunit smooth muscle
Answer: B
Rationale: Cardiac muscle cells are striated, branched, and connected by
intercalated discs containing gap junctions.
Q5. Smooth muscle is characterized by all of the following EXCEPT:
A) Non-striated appearance
B) Involuntary control
C) Presence of sarcomeres
D) Found in walls of hollow organs
Answer: C
Rationale: Smooth muscle lacks sarcomeres and the regular banding pattern seen
in skeletal and cardiac muscle.
Q6. The dense irregular connective tissue that surrounds an entire skeletal muscle
is the:
A) Endomysium
B) Perimysium
C) Epimysium
D) Sarcolemma
, Answer: C
Rationale: Epimysium is the outermost layer; it blends with deep fascia and
separates muscle from surrounding tissues.
Q7. Which connective tissue layer wraps individual muscle fibers?
A) Epimysium
B) Perimysium
C) Endomysium
D) Fascia
Answer: C
Rationale: Endomysium is a thin areolar connective tissue layer around each
muscle fiber (cell).
Q8. A fascicle is defined as:
A) A single muscle fiber
B) A bundle of muscle fibers surrounded by perimysium
C) The entire muscle belly
D) The plasma membrane of a muscle cell
Answer: B
Rationale: Fascicles are visible to the naked eye; many fascicles make up a whole
muscle.
Q9. The plasma membrane of a muscle fiber is specifically called the:
A) Sarcoplasm
B) Sarcolemma
C) Sarcoplasmic reticulum
D) T-tubule
Answer: B
Rationale: "Sarco-" means muscle; sarcolemma conducts action potentials.
