bio final review unit 10

resting

A neuron at rest has a charge difference across its cell membrane, with the interior of the cell negative relative to the exterior. This difference in charge across the plasma membrane is referred to as ________ potential.

axon hillcock

Letter C is indicating:

all of the above

Relapse is a threat for recovering addicts because:

dopamine in the nucleus accumbens

The brain registers pleasure, whether it's caused by a good meal, a monetary reward, or sex, by releasing:

The agents of communication are always in the form of a chemical.

The nervous system has certain characteristics that set it apart from the endocrine system. Which one of the following characteristics is typical of the endocrine system, but NOT the nervous system?

blocking of neurotransmitter release by the presynaptic membrane

There are several toxins that interfere with synaptic transmission. Botulism toxin, for example, interferes with the fusion of acetylcholine-containing vesicles with the membrane of the axon bulb. This would result in which one of the following?

swallowing a drug as a pill

Which of the following causes the slowest, weakest dopamine signal?

motor neurons

Which one of the following cells transmit impulses away from the central nervous system to the muscles and other organs?

parasympathetic division

Which one of the following divisions of the nervous system predominates during the relaxed state?

d

the membrane has repolarized