domain 2: Biology and Behavior
6. The junction where neurons communicate with one another is called the__________________________________________________ .
a. cell body
b. dendrite
c. axon
d. synapse
7. What is an action potential1?
a. a resting period during which a neuron can’t fire
b. a change in a neuron’s electrical charge
c. a network that includes ten or more neurons
d. an extension of a neuron’s cell body
8. A neurotransmitter is
a. a chemical that influences whether an impulse is passed on from one neuron to another
b. a network of neurons dedicated to a specific function such as walking or talking
c. a nutritional element that protects the brain against disease
d. an electronic device that helps people with brain injuries recover lost functions
9. Which of these structures is in the brain stem?
a. The motor and sensory association areas.
b. The hippocampus, hypothalamus, and amygdala.
c. The cerebral cortex.
d. The medulla and pons.
10. The hypothalamus
a. Helps you regain your balance after stumbling.
b. regulates your sex drive, body temperature, hunger, and thirst.
c. Controls your levels of awareness and wakefulness.
d. Allows you to execute smooth body movements.
11. Which structure is responsible for the storage of long-term memories?
a. medulla
b. hypothalamus
c. pituitary gland
d. hippocampus
12. What is the name of the structure that connects the two halves of the cerebral cortex?
a. corpus callosum
b. reticular formation
c. limbic system
d. hypothalamus
21. ————— skills are associated with the left cerebral hemisphere.
a- athletic
B, language
C, artistic
D, fine motor
22, Alicia is trying to decide on a topic for a research paper. Which part of the brain is she using?
a- the amygdala
b- the hypothalamus
c- the medulla
d- the cerebral cortex
23. The diagnostic instrument that shows electrical activity in the brain is the
a- CAT Scan
a. MRI
b. PET scan
c. EEG
24. Which of these causes you to have a startle response when you hear a sudden loud noise?
a. hippocampus
b. motor cortex
c. peripheral nervous system
d. occipital lobe
25. In most cases, children recover from brain injuries more rapidly than adults do. One reason for this difference is that children’s brains have more than adults’ brains do.
a. Plasticity.
b. Modular flexibility.
c. Elasticity.
d. Cortical adaptation.
26. What are axons?
a. short fibers that branch out from a neuron’s cell body and receive incoming messages from other neurons
b. fibers of varying lengths that extend from a neuron’s cell body and transmit messages to other neurons
c. fat cells that insulate neurons
d. cells that hold neurons together
27. Which of the following are part of the endocrine system?
a. glands that secrete hormones
b. neurons and glial cells
c. dendrites and axons
d. the cerebral hemispheres
