Unit 3 Psychology Test

Mary participates in an exercise program bc she experiences an increase in energy and feelings of well-being at the end of each exercise session. The best explanation for Mary's perserverance in the program is that exercise

Increases her level of endorohines

Ben was enjoying a walk in the woods. 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

Prozac has been shown to reduce depression primarily by

Blocking reuptake and increasing the level of seritonin in the synapse

In the figure above, where fo selective serotonin reputake inhibitors (SSRIs) have their initial effect?

C

What is the mode of function of synaptic transmission?

A chemical messanger

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

Digestion

Which of the following conditions most often results from having an extra copy of chromosome 21?

Down Syndrome

The limbic system is most closely associated with

Emotions

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

Epilepsy

In 1848, Phinease Gage, a railroad foreman, survived when an explosion drove an iron rod through his head. The once friendly, soft-spoken Gage became irritable and dishonest. Gage's case provided evidence that which region of the brain plays a role in personality and behavior?

Frontal lobes

Stimulations of portions of the left temporal lobe of the brain during surgery will cause the patient to

Hear sounds

When people consume large amounts of alcohol, they are often unable to recall what they did and said while drinking. This occurs bc alcohol interferes with the brain's ability to form new memories in the

Hippocampus

The pituitary glan is controlled by the

Hypothalamus

Which of the following brain structures has the strongest influence on hunger and satiety?

Hypothalamus

After an electrode implanted in a cat's brain stimulates the cat's amygdala, the cat will most likely do which of the following?

Immediately withdraw in fear

The primary effect of the myelin sheath is to:

Increase the velocity of conduction of the action potential along the axon

The ability to recognize faces with the right hemisphere but not with the left hemisphere best illustrates

Lateralization

A particular group of brain cells seems to provide a basis for observational learning. Researchers call these specialized cells

Mirror neurons

Which of the following provides info regarding brain function by monitoring the brain at work through metabolism of glucose?

Postition Emission Tomography (PET)

The function of dendrites is to

Receive info from other neurons

Which of the following are NOT part of a neuron?

Synapses

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

Wernicke's Area

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

A life-threatening disution of heartbeat and breathing

A person accidentally touches a hand to a hot stove and quickly pulls the hand away, even before sensory info about the hot stove reaches the brain. The person's reaction is most directly enabled by

A spinal reflex

The depeltion of which of the following neurotransmitters is most closely associated with the symptoms of Alzhimer's disease?

Acetylcholine

An individual was admitted to the hospital after experiencing a mild tingling on the right side of the face and a sudden inability to speak. Using magnetic resonace imaging (MRI), a doctor would likely find

An abnormality in the brain tissue of the left hemisphere

Which of the following correctly describes the firing of neurons?

An all-or-none response

The area labeled X in the drawing above denotes which of the following structures?

Axon Terminals

Difficulty in typing smoothly on a keyboard would most likely result from damage to the

Cerebellum

Which of the following parts of the brain is most active in decision-making?

Cerebral Cortex

Which of the following is a major nerve-fiber pathway connecting the right and left hemispheres of the brains

Corpus Callosum

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

If an individual has lost the ability to feel pain in the left arm, there is most likely damage to what area of the brain?

Right parietal lobe

George was involoved in an accident and experienced head trauma. Although his eyes were functioning normally, he was unable to see. Which area of the brain was most likely affected by the accident?

The occipital lobe