What does ZEITGEBER mean

*a. "time-giver"
b. "time-reset" condition
c. "time-adjuster"
d. "time-starter"

An Endogenous Circannual Rhythm is:

a. a rhythm that comes from external sources and lasts about a day.
*b. a rhythm that comes from internal sources and lasts about a year.
c. a rhythm that comes from external sources and lasts about a year.
d. a rhythm that comes from internal sources and lasts about a day.

According to the trichromatic theory of color vision, the most important factor in determining the color we see is the:

    *a.    relative activity of short, medium, and long wavelengths.
    b.    absolute activity of a single cone.
    c.    velocity of the action potential.
    d.    difference between cone and rod activity.

Taste receptors are continually being replaced.

*True   
False   
   

If some of the axons innervating a given cell are destroyed or if they become inactive, what compensatory process takes place in the remaining presynaptic cells?

    *a.    collateral sprouting
    b.    denervation supersensitivity
    c.    removal of toxins
    d.    activation of previously silent synapses

The pons acts as a bridge between:

    a.    the hindbrain and the forebrain.
    *b.    one side of the nervous system and the other.
    c.    the thalamus and the cerebral cortex.
    d.    the thalamus and the hypothalamus.

People with amnesia tend to have poorer explicit than implicit memory.

*True   
False   

What provides the building blocks for synthesizing all neurotransmitters?

    a.    Breakdown products formed from other transmitters.
    *b.    Substances found in the diet.
    c.    Methane and ethanol.
    d.    Breakdown products of DNA.

What is one major cause for the resting potential of a neuron's membrane?

*a. The sodium-potassium pump.
b. A high permeability of the membrane to water molecules.
c. The refractory period of the membrane.
d. A difference in size between axons and dendrites.

Some cases of depression may be caused by a virus.

*True  
False