Chapter 2 Review
PSYCH 335

1. The efferent nerves of the ANS go to

the brain
voluntary muscles
various organs of the body
cranial nerves

2. The axon leaves the cell body (soma) at the

myelin sheath
synapse
nucleus
axon hillock

3. Which of the following are found in only myelinated neurons?

terminal buttons
nodes of Ranvier
dendritic spines
dendritic buds

4. The difference in electrical charge between the inside and outside of a neuron is called the neuron's

resting potential
action potential
membrane potential
fast potential

5. When a neuron is at rest, there are more

Na+ ions outside the neuron than inside the neuron
K+ ions outside the neuron than inside the neuron
Cl- ions outside the neuron than inside the neuron
both a and c

6. The first event in the generation of an action potential is the

influx of Na+ ions
opening of K+ channels
opening of Cl- channels
opening of Na+ channels

7. Action potentials spreading down an axon do not change direction because right behind the action potentials is a wave of

sodium
depolarization
potassium
refractory period

8. The word "saltatory" is derived from the Latin word "saltare," which means "to

dance or jump"
suppress"
fly"
vomit"

9. All membranes share a common “sandwich” structure because the lipid molecules have a _________ head and a _________ tail.

hydrophobic; hydrophilic
hydrophilic; hydrophobic
phosphorus; fatty
fatty; phosphorus

10. Production of proteins is to production of energy molecules as

soft ER is to golgi apparatus
mitochondria is to rough ER
ribosome is to mitochondria
plasma membrane is to endoplasmic reticulum

Name:

1