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The division of the peripheral nervous system that carries signals to voluntary muscles is the


A) somatic system.
B) autonomic system.
C) sympathetic system.
D) parasympathetic system.
E) None of the answer choices are correct.

F) A) and E)
G) C) and D)

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  -In the diagram,the squares which are transported from a neuron,through the synaptic cleft,and received by the receptors of another cell are called A)  sodium ions. B)  potassium ions. C)  neurotransmitters. D)  oxygen molecules. E)  neuroglia. -In the diagram,the squares which are transported from a neuron,through the synaptic cleft,and received by the receptors of another cell are called


A) sodium ions.
B) potassium ions.
C) neurotransmitters.
D) oxygen molecules.
E) neuroglia.

F) B) and C)
G) A) and B)

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Reminyl, known chemically as galantamine, works like the nation's three other Alzheimer's medications. It modestly slows cognitive (mental ability) decline by inhibiting the breakdown of acetylcholine, a brain chemical vital for nerve cells to communicate, by the enzyme acetylcholineesterase. -What effect would Reminyl have on a neuron's ability to release neurotransmitters?


A) It would decrease.
B) It would stay the same.
C) It would increase.
D) It would increase, then decrease.
E) None of the answer choices are correct.

F) C) and D)
G) B) and E)

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The nervous tissue that consists of myelinated axons transmitting information throughout the central nervous system is the


A) white reflex.
B) gray matter.
C) red reflex.
D) red matter.
E) white matter.

F) A) and C)
G) None of the above

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A neuron fires when Na⁺ ions


A) move against their concentration gradient spontaneously.
B) are actively pumped down their concentration gradient.
C) move down their concentration gradient spontaneously.
D) are actively pumped against their concentration gradient.
E) None of the answer choices is correct.

F) C) and D)
G) A) and C)

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If you were working with a patient with brain damage who had serious problems with homeostasis,you would suspect that the brain damage included the 


A) cerebellum.
B) hypothalamus.
C) hippocampus.
D) pons.
E) cerebrum.

F) A) and D)
G) All of the above

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The type of neuron that conducts its message from the central nervous system toward an effector is the


A) synaptic neuron.
B) interneuron.
C) motor neuron.
D) sensory neuron.
E) neuroglia.

F) B) and E)
G) D) and E)

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The myelin sheath around an axon is continuous.

A) True
B) False

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A pheromone is a chemical substance that elicits a specific response in members of a different species.

A) True
B) False

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An action potential is not generated by mechanoreceptors of the general senses when


A) you taste a sour lemon.
B) you get a paper cut on your finger.
C) a bee stings you.
D) you remove frozen foods from the freezer.
E) you put on a shirt.

F) C) and D)
G) B) and D)

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If you wanted to study the part of a neuron that carries electrical signals away from the cell body,you would look for what part?


A) dendrite
B) axon
C) myelin sheath
D) cell body
E) hemisphere

F) B) and D)
G) B) and C)

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While in the treatment room at your eye doctor,you bump a model of the eye,and the sheet-like,innermost layer of the eye falls out into your hand.When you replace it,you have put back the 


A) cornea.
B) retina.
C) pupil.
D) iris.
E) lens.

F) A) and B)
G) B) and E)

Correct Answer

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