Which statement best describes the effect nicotine has on the central nervous system?

Question

A.
It acts as a stimulant and causes pleasurable feelings.
B.
It acts as a sedative and relaxes the mind.
C.
It acts as both a stimulant and a sedative.

Answer 1

A. It acts as a stimulant and causes pleasurable feelings.

Answer 2

Prolonged and constant use of tobacco can weaken the user's immune system and increase the risk of many diseases.

Which disease makes the air sacs in the lungs less elastic, reducing their ability to absorb oxygen?
A.
chronic bronchitis
B.
emphysema
C.
lung cancer
D.
oral cancer

Answer 3

B. Emphysema

Answer 4

Which is a likely result of taking LSD?
A.
raised heart rate and sped-up nervous system
B.
altered mood and sensory perceptions
C.
reduced heart rate and loss of inhibitions

Answer 5

B. Altered mood and sensory perceptions.

Answer 6

When you experience changes in light, sound, and temperature, which cells send signals toward the central nervous system?

A. dendrites

B. sensory neurons

C. axons

Answer 7

When you experience changes in light, sound, and temperature, which cells send signals toward the central nervous system?

A.
Dendrites

B.
Sensory neurons

C.
Axons

Answer 8

B. Sensory neurons.