Practice Quiz - Skeletal Muscles PDF

1. What is the role of tendons in skeletal muscles? a. They help in digestion b. They initiate muscle contraction c. They transmit force from muscles to bones d. They provide oxygen to muscles [Answer: c] 2. What happens when a flexor muscle contracts? a. It extends a limb b. It produces flexi...

1. What is the role of tendons in skeletal muscles? a. They help in digestion b. They initiate muscle contraction c. They transmit force from muscles to bones d. They provide oxygen to muscles [Answer: c] 2. What happens when a flexor muscle contracts? a. It extends a limb b. It produces flexion, drawing in of a limb c. It causes the limb to twitch d. It causes the limb to relax [Answer: b] 3. What is the function of Intrafusal Muscle Fiber? a. It helps in muscle relaxation b. It functions as a stretch receptor c. It generates force during muscle contraction d. It aids in muscle coordination [Answer: b] 4. What is the function of an Alpha Motor Neuron? a. It regulates heartbeat b. Its activation contracts the muscle fibers c. It helps in digestion d. It helps in muscle relaxation [Answer: b] 5. What does an Endplate Potential do? a. It always causes the muscle fiber to fire b. It relaxes the muscle c. It stimulates the muscle to twitch d. It inhibits muscle contraction [Answer: a] 6. What does the gamma motor system control? a. The size of the brain b. The length of the muscle spindles c. The body's immune response d. The body's temperature [Answer: b] 7. What is the function of the Golgi Tendon Organ? a. It controls heartbeat b. It functions as a stretch receptor c. It helps in digestion d. It controls body temperature [Answer: b] 8. What is the function of the Monosynaptic Stretch Reflex? a. It controls muscle relaxation b. It controls digestion c. It controls heartbeat d. It causes a muscle to contract in response to being quickly stretched [Answer: d] 9. What is the role of the brain in movement control? a. It has no role b. It controls all aspects of movement c. It only controls voluntary movements d. It only controls involuntary movements [Answer: b] 10. What does a synapse between the terminal button of an efferent neuron and the membrane of a muscle fiber called? a. Motor Endplate b. Neuromuscular Junction c. Golgi Tendon Organ d. Alpha Motor Neuron [Answer: b] 11. How is the force exerted by contraction of a skeletal muscle achieved? a. Through the activation of Alpha Motor Neurons b. Through the activation of flexor muscles c. Through the activation of extensor muscles d. Through the activation of sensory neurons [Answer: a] 12. What happens when a muscle fiber is depolarized? a. It relaxes b. It contracts and generates force c. It causes a muscle twitch d. It causes a muscle spasm [Answer: b] 13. What is the role of calcium in muscle contraction? a. It acts as a cofactor allowing myofibrils to extract energy from ATP b. It relaxes the muscles c. It provides energy for muscle contraction d. It inhibits muscle contraction [Answer: a] 14. What happens when myosin cross bridges attach to actin strands? a. The muscle relaxes b. The muscle lengthens c. The muscle shortens d. The muscle twitches [Answer: c] 15. What is the sensory feedback from muscles important for? a. Digestion b. Immune response c. Maintaining limb position d. Heartbeat [Answer: c] 16. What is the function of the Golgi Tendon Organ? a. It is sensitive to stretch b. It controls heartbeat c. It controls digestion d. It regulates body temperature [Answer: a] 17. What is the function of the polysynaptic reflexes? a. They control simple responses to particular stimuli b. They control digestion c. They control heartbeat d. They control body temperature [Answer: a] 18. What is the function of the gamma motor system? a. It controls digestion b. It controls limb movement c. It controls heartbeat d. It controls body temperature [Answer: b] 19. What is the function of the clasp-knife reflex? a. It controls digestion b. It helps in releasing the sudden resistance during limb flexion c. It controls heartbeat d. It controls body temperature [Answer: b] 20. What is the role of glycine in the polysynaptic reflexes? a. It produces inhibitory postsynaptic potentials on the motor neurons b. It stimulates muscle contraction c. It aids in digestion d. It controls body temperature [Answer: a]