FREE AND STUDY GAMES ABOUT AMANDA ABBOTT EXAM

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FREE AND STUDY GAMES ABOUT AMANDA ABBOTT EXAM

QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -27 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body?

Answer:

Almost 300 times faster

Question 2: Which neuron could transmit a nerve impulse the fastest?

Answer:

A large-diameter neuron with myelin Question 3: The neurotransmitter(s) that inhibit(s) the conduction of pain impulses is(are):

Answer:

enkephalins.Question 4: Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO)?

Answer:

Phenelzine

Question 5: A synaptic knob would be located on a(n):

Answer:

axon.Question 6: Which of the following statements about amino acid neurotransmitters is incorrect?

Answer:

They are all inhibitory neurotransmitters.Question 7: The first event to occur when an adequate stimulus is applied to a neuron is:

Answer:

some of the sodium channels at the point of stimulation open.Question 8: Serotonin is an example of a(n):

Answer:

amine neurotransmitter.Question 9: For a neurotransmitter to produce an inhibitory postsynaptic potential, which of the following channels must open?

Answer:

Potassium and/or chloride channels Question 10: Excitatory neurotransmitters are most likely to:

Answer:

initiate an action potential.Question 11: When current leaps across an insulating myelin sheath from node to node, the

type of impulse conduction is called:

Answer:

saltatory conduction.Question 12: During a relative refractory period:

Answer:

the action potential can be initiated with a strong stimulus.

Question 13: Which of the following is true of spatial summation?

Answer:

Neurotransmitters released simultaneously from several presynaptic knobs converge on one postsynaptic neuron.Question 14: When an impulse reaches a synapse:

Answer:

chemical transmitters are released.Question 15: The only ion(s) that can diffuse across a neuron's membrane when the neuron is at

rest is (are):

Answer:

potassium.Question 16: Compared with the outside of the neuron, the inside has a(n) ____ charge.

Answer:

negative Question 17: Dopamine, epinephrine, and norepinephrine are classified as:

Answer:

catecholamines.Question 18: Severe depression can be caused by a deficit in certain brain synapses of:

Answer:

amines.Question 19: A synapse consists of:

Answer:

a synaptic knob.a synaptic cleft.the plasma membrane of a postsynaptic neuron.all of the above.

Question 20: The fastest nerve fibers in the body can conduct impulses up to approximately _____ meters per second.

Answer:

130

Question 21: Which is true of an action potential?

Answer:

The outside of the plasma membrane is negatively charged, and the inside is positively charged.Question 22: Neurotransmitters are released in a synapse and bind to:

Answer:

receptors on the postsynaptic neuron.

Question 23: Which is true of a neuron with a resting potential?

Answer:

The sodium pump has moved N to the outside of the plasma membrane.Question 24: Stimulus-gated channels open in response to:

Answer:

sensory stimuli.Question 25: A slight shift away from the resting membrane potentials in a specific region of the plasma membrane is called a _____ potential.

Answer:

local Question 26: No impulse can be sent through a neuron:

Answer:

during the absolute refractory period.Question 27: Within the nervous system, coding for the strength of a stimulus is accomplished

through:

Answer:

the frequency of nerve impulses.