Pysch Review questions chapter 4

in transmitting information, a signal within a single neuron travels from the

dendrite to the cell body to the axon

Which are the cellular processes that function to stop or terminate transmission?

• Reuptake

• enzymatic deactivation

Which of the following does not happen as the result of the reuptake mechanism in neurotransmission?

neurotransmitters are broken down by enzymes

which anatomical feature functions to insulate axons and speed up the conduction of nerve impulses

myeline sheath

what structure is the end of the axon where NTs are released?

synaptic vesicles

The function of the dendrite is to

receive incoming signals (neurotransmitters) from other neurons

which organelle functions to package the synaptic vesicles once filled with NTs?

• golgi apparatus

lysosomes function to ____ whereas microtubules facilitate

deactivate neurotransmitters; intra-cellular transport

Drugs that function as “Reuptake inhibitors” serve to ___ the availability of Nts to the post-synaptic receptor sites during neurotransmission

increase

which neurotransmitter is associated with the regulation of mood and appetite, and low NT activity is implicated in depression?

serotonin

when a drug serves to facilitate (increase) the action or availability of a neurotransmitter substance, the dug is said to be acting as

an agonist

Drugs that function as post-synaptic receptor blockers are

antagonists

The area that plays a critical role in maintaining our level or arousal or alertness is the

pons

The substantia nigra is located within the

midbrain

Which area includes the superior and inferior colliculi

the tectum of the midbrain

which diencephalic structure controls the pituitary gland’s regulation of hormone release to support behaviors such as eating and sex?

hypothalamus

Which component of the limbic system plays an essential role in the formation of new memories

hippocampus

The surgical removal of a large tumor from Allen’s occipital lobe resulted in extensive loss of brain tissue. Allen is most likely to suffer some loss of:

• visual perception

Which procedure is the most cost-effective method to examine whether a skull fracture exists or there is a hematoma or mass?

CT Scan

Which of the following neuroimagining procedures assesses the metabolic activity of different brain regions by measuring the blood flow and then expressing this rate in color?

PET Scans