WorksheetsMuscles Review Quiz
Total questions: 17
Worksheet time: 8mins
Which of the following is the basic functional unit of a muscle?
Myofibril
Sarcomere
Tendon
Epimysium
What type of muscle tissue is under voluntary control?
Smooth muscle
Cardiac muscle
Skeletal muscle
Nervous tissue
Which ion is essential for muscle contraction?
Sodium
Potassium
Calcium
Chloride
What is the role of the sarcoplasmic reticulum in muscle cells?
Transmitting nerve impulses
Storing calcium ions
Producing energy for muscle cells
Protecting muscle fibers
During muscle contraction, myosin heads bind to which protein?
Actin
Tropomyosin
Troponin
Titin
What is the sliding filament theory?
Explanation of how ATP is produced in muscle cells
Description of how muscles grow with exercise
Theory describing how myofilaments slide to produce muscle contraction
Theory of how muscles communicate with the nervous system
Which connective tissue layer surrounds individual muscle fibers?
Epimysium
Perimysium
Endomysium
Fascia
Which muscle type is found in the walls of hollow organs?
Skeletal
Cardiac
Smooth
What is the role of ATP in muscle contraction?
Binds to troponin to expose binding sites
Provides energy for the power stroke of myosin
Releases calcium from the sarcoplasmic reticulum
Forms the cross-bridge between actin and myosin
Which of the following is a characteristic of cardiac muscle?
Multinucleated cells
Non-striated appearance
Intercalated discs
Voluntary control
The muscle that opposes or reverses a movement is called the:
Agonist
Synergist
Antagonist
Fixator
Which muscle is primarily responsible for flexing the forearm at the elbow?
Biceps brachii
Triceps brachii
Deltoid
Pectoralis major
Which of the following conditions results from the overstretching or tearing of muscle fibers?
Atrophy
Strain
Sprain
Hypertrophy
What happens to a muscle when it undergoes atrophy?
It becomes stronger
It increases in size
It loses mass and strength
It produces more myofibrils
Which of the following is NOT a function of the muscular system?
Heat production
Movement
Blood cell production
Maintenance of posture
ability of muscle to shorten and produce tensions at its ends
contractibility
excitability
elasticity
extensibility
explanation for how muscles contract to produce force
expansion contraction theory
sliding filament theory
muscular contraction theory
evolution
