PSYCH 104: Chpt. 3 Quiz

Monozygotic twins share _____ percent of their genes.

100

_____ direct(s) and produce(s) human behaviors, personality traits, and even psychological disorders.

Both genes and the environment

_____ are activated when watching another animal's behavior and are involved in social behavior.

Mirror neurons

_____ are the billions of cells in the human brain that communicate with one another to perform information-processing tasks.

Neurons

The _____ stimulates the release of neurotransmitters, allowing neurons to communicate with each other.

action potential

Dr. Billings studies brain wave patterns that occur when people are dreaming. He attaches a device to the outside of people's skulls to measure electrical activity in their brains. What type of device is he using?

an EEG

Alice thinks she's having a stroke. What would be the best way to diagnose a stroke?

an MRI

Beta blockers, which prevent the effects of a neurotransmitter, are considered:

antagonists.

The synapse is a small gap between neurons where information from the:

axon of one neuron is sent to the dendrite of another neuron.

The synapse is typically located between the _____ of the first (sending) neuron and the _____ of the second (receiving) neuron.

axon; dendrite

The central nervous system is comprised of the:

brain and the spinal cord.

The _____ is the part of the neuron that keeps the cell alive.

cell body

The _____ receives information from other neurons, and the _____ sends that information on to the next neuron.

dendrite; axon

Through the case study of Phineas Gage, researchers found that the:

frontal lobe is involved in planning, decision making, and emotion regulation.

The _____ is made up of _____ and helps to insulate the axon.

myelin sheath; glial cells

The _____ refers to the time following an action potential during which a new action potential cannot be initiated.

refractory period

The typical sequence of events for neuronal activity is:

resting potential, action potential, refractory period.

The _____ branches down from the brain and allows messages to be sent to different parts of the body.

spinal cord

A stroke or other damage in the _____ lobes can lead to deficits in hearing and language.

temporal

Denton pitches a baseball in what looks like one effortless, smooth movement. What part of the hindbrain is MOST associated with this highly coordinated motion?

the cerebellum

Which part of the brain forms FIRST in prenatal development?

the hindbrain

Spinal reflexes require input from:

the spinal cord.