Quick Quiz One

Name ______

Chapter 2 - Quick Quiz 1

1. These are the most numerous of the specialized neurons in the central nervous system.

a) motor neurons

b) sensory neurons

c) spinal neurons

d) interneurons

2. The action potential is to ______millivolts, as the resting potential is to ______millivolts.

a) -50; +70

b) -50; -70

c) +70; +50

d) -70; +50

3. Joseph has been diagnosed with Alzheimers disease, and as the illness progresses he is slowly losing his

memory skills. Which neurotransmitter is most likely to be underperforming in Joseph’s brain?

a) GABA

b) Acetylcholine

c) Dopamine

d) Endorphins

4. The ______transmits messages between the brain and the peripheral nervous system.

a) spinal cord

b) medulla

c) pons

d) corpus callosum

5. Stan has been extremely afraid of cats since he was scratched as a 5-year-old. Whenever he sees a cat, he remembers the time he was scratched across his face and starts to feel afraid. If a cat comes towards him, he often runs away immediately as he is afraid of being scratched again. Stan’s behaviors and recollection of this trauma is a result of the ______in the limbic system.

a) hippocampus

b) thalamus

c) amygdala

d) medulla

6. Which of the following regions contains the primary visual cortex?

a) occipital lobe

b) parietal lobe

c) temporal lobe

d) frontal lobe

7. Men have a lower proportion of white matter ______

a) in the right brain.

s) in the left brain.

c) in the midbrain.

d) in the hindbrain.

8. Tim is overweight. His physician has decided to test him to see if there is a problem with the regulation of his metabolism. Which endocrine gland will be the focus of diagnostic testing?

a) adrenal

b) thymus

c) thyroid

d) pancreas

9. An individual's ______refers to his or her actual characteristics.

A) phenotype

B) genotype

C) sex chromosomes

D) polygenic inheritance

10. Which of the following pairs has the exact same genetic code?

a) parent and child

b) monozygotic twins

c) dizygotic twins

d) regular non-twin siblings

Chapter 2 - Quick Quiz 1

Answer Key

1. d Explanation: There are thousands of times more interneurons than there are

sensory or motor neurons in the human nervous system. (Page 38, Conceptual, LO 2.1)

2. d Explanation: The firing state of the neuron is +50 mv, while its resting state is -70 mv.

(Pages 40-41, Conceptual, LO 2.2)

3. b Explanation: In the brain, acetylcholine helps to process information and store it in

memory. (Page 43, Applied, LO 2.4)

4. a Explanation: The spinal cord is a long cluster of neural tissue that connects the brain and

the peripheral nervous system. (Page 44, Factual, LO 2.5)

5. c Explanation: This is the part of the brain which controls many fear responses and

memories. (Page 48, Applied, LO 2.8)

6. a Explanation: The occipital lobes contain the primary visual cortex. (Page 58, Factual LO

2.14)

7. b Explanation: Men have a lower proportion of white matter in the left brain when

compared to women, who have equal amounts in the right and left brains. (Page 61,

Factual, LO 2.17)

8. c Explanation: The thyroid gland regulates metabolism. (Page 64, Applied, LO 2.21)

9. a Explanation: A phenotype is the physical expression of a person’s genetic code.

(Page 66, Factual, LO 2.22)

10. b Explanation: Monozygotic, or identical, twins share 100% of their genetic code. They are

nature’s “carbon copies.” (Page 69, Factual, LO 2.23)