Biology Part 1

You are sitting in a public place next to a new acquaintance to whom you are attracted. You feel this person's hand touch yours. You move your hand to return the gesture. Your heart beats faster and you feel "butterflies" in your stomach. Your hand movement was initiated by your ______ nervous system while your increased heart rate and stomach contractions were initiated by your _____ nervous system. A. somatic, autonomic B. autonomic, somatic C. sympathetic, parasympathetic D. parasympathetic, sympathetic

A

A particular group of brain cells seems to provide a basis for observational learning. Researchers call these specialized cells A. efferent neurons B. afferent neurons C. mirror neurons D. motor neurons E. schwann cells

C

In the figure above, where do SSRI's have their initial effect? (check test) A. a B. b C. c D. d E. e

C

The area that is being labeled in the drawing above denotes which of the following structures? (check test) A. dendrites B. Nodes of Ranvier C. axon terminals D. mitochondria E. glial cells

C

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 A. angular gyrus B. hippocampus C. parasympathetic nervous system D. sympathetic nervous system E. ventricular system

D

Immediately after firing, a neuron is incapable of responding to stimulation. This condition is referred to as A. the action potential B. the threshold difference C. specific energy of the nerve D. the absolute refractory phase E. depolarization

D

In the figure above, which letter indicates the synaptic cleft? (check test) A. a B. b C. c D. d E. e

D

The primary function of dendrites is to A. keep the cell alive B. transmit outgoing information C. secrete hormones D. receive incoming information

D

Cocaine blocks the reuptake of which neurotransmitter? A. Epinephrine B. Endorphins C. GABA D. Substance P E. Dopamine

E

In the figure above, where does the neurotransmitter dopamine have its effect? (check test) A. a B. b C. c D. d E. e

E

Mary participates in an exercise program because she experiences an increase in energy and feelings of well-being at the end of each exercise session. The best explanation for Mary's perseverance in the program is that exercise A. reduces her level of GABA B. reduces her level of acetylcholine C. reduces her level of glutamate D. increases her level of tetragons E. increases her level of endorphins

E