BIOD 151 Module 5 Test Prep
Muscular System & Muscle Physiology | Exam Review Questions
Question 1. Which of the following is a primary function of skeletal muscle?
A. Producing voluntary movement of the skeleton ✓
B. Regulating hormone release
C. Filtering blood
Question 2. Skeletal muscle tissue is classified as which of the following?
A. Voluntary and striated ✓
B. Involuntary and striated
C. Involuntary and non-striated
Question 3. Cardiac muscle tissue is classified as which of the following?
A. Involuntary and striated ✓
B. Voluntary and striated
C. Voluntary and non-striated
Question 4. Smooth muscle tissue is classified as which of the following?
A. Involuntary and non-striated ✓
B. Voluntary and striated
C. Involuntary and striated
Question 5. The connective tissue covering an entire skeletal muscle is called the:
A. Epimysium ✓
B. Perimysium
C. Endomysium
Question 6. The connective tissue surrounding a fascicle (bundle of muscle fibers)
is called the:
A. Perimysium ✓
B. Epimysium
C. Endomysium
Question 7. The connective tissue surrounding an individual muscle fiber is called
the:
A. Endomysium ✓
B. Perimysium
, C. Epimysium
Question 8. A tendon is best described as:
A. A connective tissue structure attaching muscle to bone ✓
B. A structure attaching bone to bone
C. A membrane covering an entire organ
Question 9. The sarcolemma refers to the:
A. Plasma membrane of a muscle fiber ✓
B. Contractile unit of a muscle fiber
C. Connective tissue surrounding a fascicle
Question 10. The sarcoplasm refers to the:
A. Cytoplasm of a muscle fiber ✓
B. Membrane of a muscle fiber
C. Connective tissue of muscle
Question 11. Myofibrils within a muscle fiber are composed of repeating
contractile units called:
A. Sarcomeres ✓
B. Myosin heads only
C. T-tubules
Question 12. The sarcomere is defined as the region between two consecutive:
A. Z-discs (Z-lines) ✓
B. M-lines only
C. H-zones only
Question 13. Thick filaments within a sarcomere are composed primarily of which
protein?
A. Myosin ✓
B. Actin
C. Troponin
Question 14. Thin filaments within a sarcomere are composed primarily of which
protein?
A. Actin ✓
B. Myosin
C. Titin
, Question 15. Which regulatory protein blocks the myosin-binding sites on actin in
a relaxed muscle?
A. Tropomyosin ✓
B. Troponin alone without tropomyosin
C. Titin
Question 16. Troponin functions to:
A. Bind calcium ions and shift tropomyosin to expose binding sites ✓
B. Directly bind to myosin heads
C. Store ATP for contraction
Question 17. The sarcoplasmic reticulum functions primarily to:
A. Store and release calcium ions ✓
B. Produce ATP
C. Synthesize actin and myosin
Question 18. T-tubules function to:
A. Conduct electrical impulses deep into the muscle fiber ✓
B. Store calcium exclusively
C. Produce myosin
Question 19. The neuromuscular junction is the synapse between a motor neuron
and:
A. A skeletal muscle fiber ✓
B. A cardiac muscle cell
C. A smooth muscle cell only
Question 20. Which neurotransmitter is released at the neuromuscular junction to
stimulate skeletal muscle contraction?
A. Acetylcholine ✓
B. Dopamine
C. Serotonin
Question 21. According to the sliding filament theory, muscle contraction occurs
as:
A. Thin filaments slide past thick filaments, shortening the sarcomere ✓
B. Thick and thin filaments both shorten in length
C. Filaments detach permanently from the Z-disc
Muscular System & Muscle Physiology | Exam Review Questions
Question 1. Which of the following is a primary function of skeletal muscle?
A. Producing voluntary movement of the skeleton ✓
B. Regulating hormone release
C. Filtering blood
Question 2. Skeletal muscle tissue is classified as which of the following?
A. Voluntary and striated ✓
B. Involuntary and striated
C. Involuntary and non-striated
Question 3. Cardiac muscle tissue is classified as which of the following?
A. Involuntary and striated ✓
B. Voluntary and striated
C. Voluntary and non-striated
Question 4. Smooth muscle tissue is classified as which of the following?
A. Involuntary and non-striated ✓
B. Voluntary and striated
C. Involuntary and striated
Question 5. The connective tissue covering an entire skeletal muscle is called the:
A. Epimysium ✓
B. Perimysium
C. Endomysium
Question 6. The connective tissue surrounding a fascicle (bundle of muscle fibers)
is called the:
A. Perimysium ✓
B. Epimysium
C. Endomysium
Question 7. The connective tissue surrounding an individual muscle fiber is called
the:
A. Endomysium ✓
B. Perimysium
, C. Epimysium
Question 8. A tendon is best described as:
A. A connective tissue structure attaching muscle to bone ✓
B. A structure attaching bone to bone
C. A membrane covering an entire organ
Question 9. The sarcolemma refers to the:
A. Plasma membrane of a muscle fiber ✓
B. Contractile unit of a muscle fiber
C. Connective tissue surrounding a fascicle
Question 10. The sarcoplasm refers to the:
A. Cytoplasm of a muscle fiber ✓
B. Membrane of a muscle fiber
C. Connective tissue of muscle
Question 11. Myofibrils within a muscle fiber are composed of repeating
contractile units called:
A. Sarcomeres ✓
B. Myosin heads only
C. T-tubules
Question 12. The sarcomere is defined as the region between two consecutive:
A. Z-discs (Z-lines) ✓
B. M-lines only
C. H-zones only
Question 13. Thick filaments within a sarcomere are composed primarily of which
protein?
A. Myosin ✓
B. Actin
C. Troponin
Question 14. Thin filaments within a sarcomere are composed primarily of which
protein?
A. Actin ✓
B. Myosin
C. Titin
, Question 15. Which regulatory protein blocks the myosin-binding sites on actin in
a relaxed muscle?
A. Tropomyosin ✓
B. Troponin alone without tropomyosin
C. Titin
Question 16. Troponin functions to:
A. Bind calcium ions and shift tropomyosin to expose binding sites ✓
B. Directly bind to myosin heads
C. Store ATP for contraction
Question 17. The sarcoplasmic reticulum functions primarily to:
A. Store and release calcium ions ✓
B. Produce ATP
C. Synthesize actin and myosin
Question 18. T-tubules function to:
A. Conduct electrical impulses deep into the muscle fiber ✓
B. Store calcium exclusively
C. Produce myosin
Question 19. The neuromuscular junction is the synapse between a motor neuron
and:
A. A skeletal muscle fiber ✓
B. A cardiac muscle cell
C. A smooth muscle cell only
Question 20. Which neurotransmitter is released at the neuromuscular junction to
stimulate skeletal muscle contraction?
A. Acetylcholine ✓
B. Dopamine
C. Serotonin
Question 21. According to the sliding filament theory, muscle contraction occurs
as:
A. Thin filaments slide past thick filaments, shortening the sarcomere ✓
B. Thick and thin filaments both shorten in length
C. Filaments detach permanently from the Z-disc
