Lecture 03

Question 1

homeostasis

Answer 1

maintaining of an optimal internal environment (temperature, water level, heart rate, breathing)

Question 2

neurons

Answer 2

cells that receive and transmit information; compose the nervous system; number determines the complexity of an organism

Question 3

afferent neurons

Answer 3

moves toward a central source

Question 4

efferent neurons

Answer 4

moves away from a central source

Question 5

interneurons

Answer 5

signal from one neuron to another

Question 6

the central nervous system

Answer 6

brain and spinal cord

Question 7

meninges

Answer 7

3 layers of connective tissue that surround and protect the brain

Question 8

cerebrum

Answer 8

most prominent region of the brain

Question 9

corpus callosum

Answer 9

a bundle of nerves that connect 2 hemispheres, allowing them to talk to each other

Question 10

limbic system

Answer 10

the “emotional brain” ; found buried within the cerebrum; old structure; contains the thalamus, hypothalamus, amygdala, and hippocampus

Question 11

amygdala

Answer 11

produces sensations of pleasure, fear, or sexual arousal; damage leads to the inability to feel fear or recognize facial expressions