What is a muscle that provides the major force for producing a specific movement called?
A) an agonist (prime mover)
B) a fixator
C) a synergist
D) an antagonist
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Question 2) The quadriceps femoris is composed of three vastus muscles and the ________.
A) semitendinosus
B) rectus femoris
C) semimembranosus
D) biceps femoris
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Question 3) Axon diameter and degree of myelination determine nerve impulse conduction velocity.
Indicate whether the statement is true or false
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Question 4) Loss of function in the enzyme acetylcholine esterase would result in which of the following?
A) inability to destroy and remove acetylcholine from the synaptic cleft
B) stimulation of the production of acetylcholine
C) amplify or enhance the effect of ACh
D) inability to release acetylcholine
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Question 5) Neuroglia found in the CNS that change the permeability of capillaries in the brain by binding to and surrounding these blood vessels are called ________.
Fill in the blanks with correct word
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Question 6) What is the main factor that determines the power of a muscle?
A) the total number of muscle fibers (cells) available for contraction
B) the length
C) the shape
D) the number of neurons innervating it
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Question 7) A stimulus traveling toward a synapse appears to open calcium ion channels at the presynaptic end, which in turn promotes fusion of synaptic vesicles to the axonal membrane.
Indicate whether the statement is true or false
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Question 8) Which of the following is NOT a muscle primarily involved in the breathing process?
A) diaphragm
B) latissimus dorsi
C) external intercostal
D) internal intercostal
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Question 9) The abnormal protrusion of the small intestine through a weak point in the muscle of the abdominal wall is called a ________.
A) hyperextension
B) sprain
C) pulled muscle
D) hernia
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Question 10) That part of the nervous system that conducts impulses from the CNS to the skeletal muscles is the ________ nervous system.
Fill in the blanks with correct word
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