Question 1

Which of the following is part of both the nervous and endocrine systems, and is crucial to maintenance of homeostasis?

Accepted Answer

A)   adrenal medulla
B)   thyroid gland
C)   hypothalamus
D)   thalamus
E)   medulla oblongataF) C) and D)
G) B) and E)

Question 2

A patient who has recently undergone surgery to remove tumors from his thyroid gland suddenly begins to tremble violently from head to toe because his nerves have become too excitable. Why?

Accepted Answer

A)   Too much thyroid tissue was removed, and without oxytocin, blood calcium levels fell too low.
B)   The parathyroid glands were removed, and without parathyroid hormone (PTH) , blood calcium levels rose too high.
C)   The parathyroid glands were removed, and without parathyroid hormone (PTH) , blood calcium levels fell too low.
D)   Too much thyroid tissue was removed, and without calcitonin, blood calcium levels fell too low.
E)   The hypothalamus was removed, and without it releasing hormones, blood calcium levels fell too low.F) B) and C)
G) A) and B)

Question 3

Which of these lists the events of an action potential in the correct order?

Accepted Answer

A)   Na + gates open→inside of axon becomes positive→Na + gates close→K + gates open→inside of axon becomes negative
B)   K + gates open→inside of axon becomes positive→K + gates close→Na + gates open→inside of axon becomes negative
C)   K + gates open→inside of axon becomes negative→K + gates close→Na + gates open→inside of axon becomes positive
D)   Na + gates open→inside of axon becomes negative→Na + gates close→K + gates open→inside of axon becomes positive
E)   Na + gates open→inside of axon becomes positive→K + gates close→Na + gates open→inside of axon becomes negativeF) A) and B)
G) B) and E)

Question 4

You aren't normally aware of ongoing sensory stimulation, such as the touch of clothing on your skin. What part of your brain is responsible for this "filtering" of sensory input?

Accepted Answer

A)   hypothalamus
B)   medulla oblongata
C)   cerebral cortex
D)   cerebellum
E)   thalamusF) A) and C)
G) B) and C)

Question 5

Following a severe head injury, a patient has uncontrollable, unfocused feelings of rage. What has most likely been damaged?

Accepted Answer

A)   medulla oblongata
B)   limbic system
C)   pineal gland
D)   primary motor area
E)   cerebellumF) A) and C)
G) None of the above

Question 6

Which of these is mismatched?

Accepted Answer

A)   diencephalon - thalamus
B)   brain stem - medulla oblongata
C)   cerebral cortex - occipital lobe
D)   cerebellum - midbrain
E)   frontal lobe - prefrontal areaF) A) and E)
G) D) and E)

Question 7

Which of these represents the flow of information in a spinal reflex arc in the correct order?

Accepted Answer

A)   sensory axon→sensory neuron→spinal cord→interneuron→effector→motor axon→motor neuron
B)   motor neuron→motor axon→spinal cord→interneuron→sensory neuron→sensory axon→effector
C)   sensory receptor→motor axon→interneuron→motor neuron→spinal cord→sensory axon→effector
D)   sensory receptors→sensory axon→spinal cord→interneuron→motor neuron→motor axons→effector
E)   sensory axon→motor neuron→spinal cord→interneuron→effector→sensory receptor→motor axonF) A) and D)
G) C) and D)

Question 8

Which of these works by inhibiting dopamine reuptake into synapses?

Accepted Answer

A)   cocaine
B)   THC (tetrahydrocannabinol) 
C)   heroin
D)   marijuana
E)   all drugs of abuseF) B) and D)
G) A) and B)

Question 9

Which of these is a region of close proximity between an axon terminal and the next cell?

Accepted Answer

A)   dendrite
B)   nucleus
C)   cell body
D)   axon
E)   synapseF) C) and D)
G) All of the above

Question 10

Your teenage son comes home late on Friday night and is acting strange. His behavior includes the following characteristics: high agitation, violent behavior, and irritability. These traits are far different from his normal behavior. As a parent you suspect he may have taken a drug. Which drug did he most likely take?

Accepted Answer

A)   cocaine
B)   methamphetamine
C)   marijuana
D)   alcohol
E)   crackF) C) and E)
G) A) and B)

Question 11

Gaps in the myelin sheath are termed

Accepted Answer

A)   nodes of Ranvier.
B)   interaxons.
C)   ganglia.
D)   clefts.
E)   synapses.F) A) and C)
G) A) and E)

Question 12

Which ion needs to be pumped to the exterior of the axon in order to generate a nerve impulse?

Accepted Answer

A)   Na+
B)   K+
C)   Ca+
D)   H+
E)   Cl-F) A) and D)
G) A) and C)

Question 13

The arrow shows the direction of the nerve impulse in a neuron. Where is the neurotransmitter released from the neuron?

Accepted Answer

A)   axon
B)   dendrite
C)   cell body
D)   myelin sheath
E)   axon terminalF) D) and E)
G) C) and E)

Question 14

Contraction of the uterus during childbirth is stimulated by

Accepted Answer

A)   prolactin.
B)   luteinizing hormone (LH) .
C)   oxytocin.
D)   glucagon.
E)   parathyroid hormone (PTH) .F) A) and E)
G) A) and D)

Exam 27: The Control Systems

The arrow shows the direction of the nerve impulse in a neuron. Where is the neurotransmitter released from the neuron?

Correct Answer
verified

Correct Answer
verified

Which of these lists the events of an action potential in the correct order?

Correct Answer
verified

Contraction of the uterus during childbirth is stimulated by

Correct Answer
verified

A patient who has recently undergone surgery to remove tumors from his thyroid gland suddenly begins to tremble violently from head to toe because his nerves have become too excitable. Why?

Correct Answer
verified

Which of these is mismatched?

Correct Answer
verified

Which of these represents the flow of information in a spinal reflex arc in the correct order?

Correct Answer
verified

Which of the following is part of both the nervous and endocrine systems, and is crucial to maintenance of homeostasis?

Correct Answer
verified

Following a severe head injury, a patient has uncontrollable, unfocused feelings of rage. What has most likely been damaged?

Correct Answer
verified

Gaps in the myelin sheath are termed

Correct Answer
verified

Which of these is a region of close proximity between an axon terminal and the next cell?

Correct Answer
verified

Which ion needs to be pumped to the exterior of the axon in order to generate a nerve impulse?

Correct Answer
verified

Which of these works by inhibiting dopamine reuptake into synapses?

Correct Answer
verified

You aren't normally aware of ongoing sensory stimulation, such as the touch of clothing on your skin. What part of your brain is responsible for this "filtering" of sensory input?

Correct Answer
verified

Exam 27: The Control Systems

The arrow shows the direction of the nerve impulse in a neuron. Where is the neurotransmitter released from the neuron?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of these lists the events of an action potential in the correct order?

Correct AnswerverifiedShow Answer

Contraction of the uterus during childbirth is stimulated by

Correct AnswerverifiedShow Answer

A patient who has recently undergone surgery to remove tumors from his thyroid gland suddenly begins to tremble violently from head to toe because his nerves have become too excitable. Why?

Correct AnswerverifiedShow Answer

Which of these is mismatched?

Correct AnswerverifiedShow Answer

Which of these represents the flow of information in a spinal reflex arc in the correct order?

Correct AnswerverifiedShow Answer

Which of the following is part of both the nervous and endocrine systems, and is crucial to maintenance of homeostasis?

Correct AnswerverifiedShow Answer

Following a severe head injury, a patient has uncontrollable, unfocused feelings of rage. What has most likely been damaged?

Correct AnswerverifiedShow Answer

Gaps in the myelin sheath are termed

Correct AnswerverifiedShow Answer

Which of these is a region of close proximity between an axon terminal and the next cell?

Correct AnswerverifiedShow Answer

Which ion needs to be pumped to the exterior of the axon in order to generate a nerve impulse?

Correct AnswerverifiedShow Answer

Which of these works by inhibiting dopamine reuptake into synapses?

Correct AnswerverifiedShow Answer

You aren't normally aware of ongoing sensory stimulation, such as the touch of clothing on your skin. What part of your brain is responsible for this "filtering" of sensory input?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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