Neuromuscular System Flashcards
Which of the following parts and divisions of the nervous system is correctly paired?
Autonomic division/ peripheral nervous system.
Which of the following incorrectly describes neurons?
Sensory neurons carry information away from the brain.
Which of the following is correct about muscle contraction?
Actin and myosin filaments slide past each other.
Neurotransmitters stimulate muscle contraction.
Muscle contraction requires ATP.
Sarcomere shorten during contraction.
What is the role of the myelin sheath in the nervous system?
Insulate axons.
Which of the following parts of the brain is responsible for posture, balance and movement coordination?
Cerebellum.
Which of the following is the basic contractile unit of the skeletal muscle
Sarcomere.
Skeletal muscle contraction is stimulated by the release of which neurotransmitter at the neuromuscular junction?
Acetylcholine.
Which of the following structures divide and multiply in cases of injury or disease?
Glial cells.
Which of the following describes the role of acetylcholine in muscle contraction?
Acetylcholine binds to the membrane receptor in the sarcolemma and facilitates opening of the sodium channels.
Dopamine is one of the neurotransmitters in the nervous system. What happens when dopamine is released into the nerve synapse?
Binding of dopamine to the membrane receptor of the postsynaptic cell.
Which of the following types of muscles are involuntary?
Cardiac and visceral.
Which of the following functional types of nerves is correctly paired with the impulse it carries?
Afferent/ carry stimulus towards the central nervous system.
Which of the following refers to the process of nerve stimulation wherein the action potential is generated through several stimulations released in rapid succession by a single source?
Temporal summation.
Which of the following parts of neurons is correctly paired with its function?
Axon / sends stimulus to axon terminal.
Which of the following correctly pairs an action with the nervous system that controls it?
Digestion/ autonomic.
The sympathetic division of the autonomic nervous system is primarily responsible for stimulating activities that would increase alertness during periods of stress and anxiety. Which of the following activities is not a sympathetic response?
Increase in salivation.
Which of the following disorders is caused by the degenerative demyelination of motor neurons resulting in dysfunction of voluntary muscles?
Amyotrophic lateral sclerosis.
Transecting injuries to the spinal cord will have detrimental effect to which of the following?
Somatic and autonomic systems.
Which of the following does not describe a sarcomere?
It completely surrounds the muscle fiber.
Which of the following is incorrect about muscle contraction?
Actin and myosin filaments shorten during contraction.
Which division of the nervous system facilitates muscle contraction?
Somatic division.
During contraction, thin ________ filaments slide past the thick ________ filaments which result to shortening of sarcomere and contraction of the muscle.
Actin/myosin.
Which of the following is true about the role of ATP in muscle contraction and relaxation?
ATP is needed for both the relaxation and contraction of muscle.
Which of the following is the thick contractile protein found in the sarcomere?
Myosin.
Which of the following is the result of demyelination?
Disrupted propagation of action potential along the axon.
