Exam 2: The Biological Basis of Behavior

The central nervous system consists of ________.

Broca's area is important in listening and Wernicke's area is important in talking.

The tiny fibers branching out from the cell body of a neuron are called axons.

Explain how dominant and recessive genes might influence the eye color of a child born to parents where the father has blue eyes and the mother has brown eyes. What color eyes are the grandchildren likely to have if the child marries a blue-eyed person? Why?

A member of a gene pair that can control the appearance of a certain trait only if it is paired with another, similar type gene is a ________ gene.

An axon is very thick and usually much shorter than dendrites.

The thick bundle of nerves connecting the two cerebral hemispheres which coordinates their activities is the ________.

The brain can be divided into ________ layers that evolved in different stages of evolution.

The thyroid gland helps to regulate your body's metabolism.

Which of the following does not belong biologically with the other four?

Twins that develop from a single fertilized ovum are ________ twins.

The limbic system is important to motivation.

Endorphins ________.

When sodium ions flow into a neuron and depolarize it, we say the neuron has ________.

A zygote contains ________ chromosomes in normal circumstances.

The part of a neuron which contains the nucleus and has a complete set of the neuron's chromosomes and genes is the ________.

Undersecretion of insulin by the pancreas results in ________.

Summarize research findings about left-handedness and its causes.

Differences between hemispheres are greater in women than in men.

The limbic system structures that seem especially important to emotions related to self- preservation and when stimulated cause fear or panic reactions or attack behaviors are the ________.