Unit 3 Quiz - Biological Bases of Behavior (Unit 2 on My AP Classroom)

Reuptake of a neurotransmitter refers to

absorption of the neurotransmitter into the terminal buttons of the sending neuron

Which of the following psychoactive drugs increases nervous system activity?

cocaine

Which of the following would most likely result from an injury to the medulla?

A life-threatening disruption of heartbeat and breathing

Which of the following correctly pairs subdivisions within the major divisions of the human nervous system? Responses

Autonomic . . sympathetic and parasympathetic

Which of the following allows the examination of living brain tissue visually without performing surgery?

Computerized axial tomography

In terms of the effect on the central nervous system, alcohol is most accurately classified as which of the following types of drug?

Depressant

Which of the following is reduced during a fight-or-flight reaction? Responses

Digestion

Which of the following is true of the reticular activating system?

It regulates levels of arousal.

REM sleep, generally an "active" state of sleep, is accompanied by which of the following paradoxical characteristics?

Lowered muscle tone

The brain is NOT involved in initiating action in which of the following situations?

Maureen reflexively pulls her hand away from fire.

Which of the following is a genetic disorder that results in a deficiency of a liver enzyme which, if not treated soon after birth, may eventually lead to profound mental retardation?

Phenylketonuria (PKU)

Significant damage to which of the following parts of the brain will most likely cause a person to fall into a deep coma from which the person will be unable to awaken?

Reticular formation

A patient reports constant sleepiness. A series of tests reveal that the patient's sleep is frequently disrupted by periods of interrupted breathing and brief awakenings. Which of the following diagnoses would account for such symptoms?

Sleep apnea

In right-handed individuals, which of the following abilities is predominantly a function of the right hemisphere of the brain? Responses

Spatial reasoning

Which of the following occurs when a neuron is stimulated to its threshold?

The movements of sodium and potassium ions across the membrane creates an action potential.

A person will most likely develop aphasia as a result of damage to which of the following parts of the brain?

Wernicke's area

A polygraph machine is often called a "lie detector," although it does not detect lies. Instead, it responds to changes in

automatic arousal

For most people, speech functions are primarily localized in the

left cerebral hemisphere

The result of the evolutionary process that preserves traits that enhance the adaptation of an organism and suppresses traits that do not is called

natural Selection

Ben was enjoying a walk in the woods on a beautiful Saturday afternoon. As he went around a curve, he noticed a bear walking toward him. Immediately his pupils dilated, he began to perspire, and his heart accelerated. These changes are most closely related to the function of the

sympathetic nervous system

Which of the follow scenarios is the best example of natural selection?

During a drought, the foliage in a region turns brown. More brownish moths than whitish moths from a particular breed survive predation and produce more offspring. Subsequent generations of moths have a higher percentage of brownish moths than the generation before.

In extreme cases, surgically severing the corpus callosum is a treatment for which of the following conditions?

epilepsy

immediately after firing, a neuron is incapable of responding to stimulation. This condition is referred to as

the absolute refractory phase