BIOS 242 Week 5 Quiz Exam 1 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which system is primarily responsible for body movement?
A. Nervous system
B. Muscular system
C. Skeletal system
D. Digestive system
Correct Answer: B
Rationale:Muscles contract to produce movement.
2. Which type of muscle is voluntary?
A. Skeletal muscle
B. Cardiac muscle
C. Smooth muscle
D. Visceral muscle
Correct Answer: A
Rationale:Controlled consciously.
3. Which type of muscle is found in the heart?
,A. Skeletal
B. Smooth
C. Cardiac
D. Voluntary
Correct Answer: C
Rationale:Specialized for continuous contraction.
4. Which muscle type is involuntary?
A. Smooth muscle
B. Skeletal muscle
C. Voluntary muscle
D. Striated muscle
Correct Answer: A
Rationale:Found in internal organs.
5. What is the functional unit of muscle?
A. Sarcomere
B. Neuron
C. Axon
D. Myelin
Correct Answer: A
Rationale:Basic unit of contraction.
6. Which protein is responsible for muscle contraction?
,A. Actin
B. Myosin
C. Both actin and myosin
D. Collagen
Correct Answer: C
Rationale:Interact to cause contraction.
7. What is the role of ATP in muscles?
A. Provides energy
B. Stores calcium
C. Forms proteins
D. Transmits impulses
Correct Answer: A
Rationale:Required for contraction cycle.
8. Which ion is essential for muscle contraction?
A. Calcium
B. Sodium
C. Potassium
D. Chloride
Correct Answer: A
Rationale:Triggers interaction of proteins.
9. What is the junction between nerve and muscle?
, A. Synapse
B. Neuromuscular junction
C. Axon terminal
D. Sarcolemma
Correct Answer: B
Rationale:Where signal is transmitted.
10. Which neurotransmitter stimulates muscle contraction?
A. Dopamine
B. Serotonin
C. Acetylcholine
D. GABA
Correct Answer: C
Rationale:Released at neuromuscular junction.
11. What is muscle tone?
A. Continuous partial contraction
B. Full contraction
C. Relaxation
D. Stretching
Correct Answer: A
Rationale:Maintains posture.
12. Which structure stores calcium in muscle cells?
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which system is primarily responsible for body movement?
A. Nervous system
B. Muscular system
C. Skeletal system
D. Digestive system
Correct Answer: B
Rationale:Muscles contract to produce movement.
2. Which type of muscle is voluntary?
A. Skeletal muscle
B. Cardiac muscle
C. Smooth muscle
D. Visceral muscle
Correct Answer: A
Rationale:Controlled consciously.
3. Which type of muscle is found in the heart?
,A. Skeletal
B. Smooth
C. Cardiac
D. Voluntary
Correct Answer: C
Rationale:Specialized for continuous contraction.
4. Which muscle type is involuntary?
A. Smooth muscle
B. Skeletal muscle
C. Voluntary muscle
D. Striated muscle
Correct Answer: A
Rationale:Found in internal organs.
5. What is the functional unit of muscle?
A. Sarcomere
B. Neuron
C. Axon
D. Myelin
Correct Answer: A
Rationale:Basic unit of contraction.
6. Which protein is responsible for muscle contraction?
,A. Actin
B. Myosin
C. Both actin and myosin
D. Collagen
Correct Answer: C
Rationale:Interact to cause contraction.
7. What is the role of ATP in muscles?
A. Provides energy
B. Stores calcium
C. Forms proteins
D. Transmits impulses
Correct Answer: A
Rationale:Required for contraction cycle.
8. Which ion is essential for muscle contraction?
A. Calcium
B. Sodium
C. Potassium
D. Chloride
Correct Answer: A
Rationale:Triggers interaction of proteins.
9. What is the junction between nerve and muscle?
, A. Synapse
B. Neuromuscular junction
C. Axon terminal
D. Sarcolemma
Correct Answer: B
Rationale:Where signal is transmitted.
10. Which neurotransmitter stimulates muscle contraction?
A. Dopamine
B. Serotonin
C. Acetylcholine
D. GABA
Correct Answer: C
Rationale:Released at neuromuscular junction.
11. What is muscle tone?
A. Continuous partial contraction
B. Full contraction
C. Relaxation
D. Stretching
Correct Answer: A
Rationale:Maintains posture.
12. Which structure stores calcium in muscle cells?
