Biology Provincial- Nervous System

Biology Provincial- Nervous System - 37 Two areas of the...

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z 37. Two areas of the brain that regulate the responses of the autonomic nervous system are the A. cerebrum and cerebellum. B. corpus callosum and thalamus. C. hypothalamus and medulla oblongata. D. anterior pituitary and posterior pituitary. 39. The portion of the brain involved in speech, vision, learning and memory is the A. cerebrum. B. cerebellum. C. hypothalamus. D. medulla oblongata. 35. The hypothalamus causes the anterior pituitary to secrete hormones by A. negative feedback. B. releasing adrenalin. C. releasing hormones. D. nervous stimulation. 34. Which part of the brain initiates the resumption of breathing when someone holds their breath? A. cerebellum B. hypothalamus C. corpus callosum D. medulla oblongata 36. Some neurotransmitters in the peripheral nervous system stop or reduce muscle-cell contractions. These neurotransmitters must work by A. destroying cholinesterase in the synaptic cleft. B. decreasing the amount of stimulus required for depolarization. C . preventing the sodium gates from opening in the postsynaptic membranes. D. preventing the reabsorption of acetylcholine in the presynaptic membranes. 40. Voluntary movement of the limbs is initiated by the A. cerebrum. B. cerebellum. C. hypothalamus. D. medulla oblongata. 41. Elevated body temperature due to a prolonged infection is due to a stimulation of which of the following structures? A. W B. X C. Y D. Z 42. When the hormone estrogen was administered to patients with Alzheimer’s disease, the memory of these patients improved. On which structure in the diagram could estrogen have
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had an affect? A. W B. X C. Y-cerebrum D. Z 41. If a person’s ability to integrate information from both hemispheres of the brain is impaired, the portion of the brain most likely affected is the A. pituitary. B. thalamus. C. cerebellum. D. corpus callosum. 41. Increased activity in structures X and Y is associated with which of the following? A. rebuilding of the endometrium B. decreased coordination of skeletal muscle C. contraction of smooth muscle in the intestines D. reabsorption of neurotransmitters in the synaptic cleft 36. Why can an impulse travelling along an axon not reverse its direction? A. The myelin sheath will only permit one-way travel of an impulse. B. Sodium gates remain closed until the impulse reaches the synapse. C. The threshold required to create an action potential behind the impulse is increased. D. The sodium-potassium pump has not restored the resting potential immediately behind the action potential. 34. To which structure does a nerve impulse travel after leaving the axon of an interneuron? A. a receptor B. an effector C. an axon of a sensory neuron D. a dendrite of a motor neuron 48. What does the term “threshold” refer to during synaptic transmission? A. the number of impulses in a given unit of time
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Biology Provincial- Nervous System - 37 Two areas of the...

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