Quiz Bank 3

Question 1

A difference in ___ can explain why one person dies from a disease and another person survives

Answer 1

Genetics

Question 2

Studying close relatives allows behavioral genetics to determine ____

Answer 2

The relative contributions of genes and environment in a population

Question 3

The myeline sheath consistes of a(n)_____.

Answer 3

glial cells

Question 3

Human eggs and sperm each contain 23 ____, which are composed of long strands of ___.

Answer 3

chromosomes, DNA

Question 4

Polygenetic means that most traits are controlled by ____.

Answer 4

more than one gene

Question 4

____ asserts that our genes set the boundaries within which we can operate, and our environment interacts with our genesti deternube where within those boundaries we will fall.

Answer 4

Range of reaction

Question 5

The ____ of a neuron contain ____ that house neutransmitters, the chemical messengers of the nervous system.

Answer 5

terminal button; synaptic vessels

Question 6

Agonists bind to ____ and antagonists bind to ___.

Answer 6

receptors; receptors

Question 7

The space between two neurons is called the _____.

Answer 7

synapse

Question 8

The ___ is the difference in charge between the intracellular and extracellular space of a neuron.

Answer 8

Membrane potential

Question 9

In a resting state, sodium is at a higher concentration outside the cell and potassium is more concentrated inside the cell. During an action potential, the sodium levels ____ inside the cell.

Answer 9

increase

Question 10

________ is the electrical signal that typically moves from the
cell body down the axon to the axon terminals.

Answer 10

action potential

Question 11

A particular electrical signal being transmitted to a neuron is
sufficient to generate an action potential. If the magnitude of the
incoming electrical signal is doubled, the action potential will
________.

Answer 11

undergo no changes in strength, speed, or duration.

Question 12

Psychotropic medications are drugs that treat psychiatric symptoms
by restoring ________ balance.

Answer 12

neurotransmitter

Question 13

________ is a neurotransmitter with roles in pleasure and pain
modulation.

Answer 13

Beta-Endorphin

Question 14

Selective serotonin reuptake inhibitors (SSRIs) are drugs commonly
prescribed for ________

Answer 14

Depression

Question 15

The two major divisions of the nervous system are the ________ and
________.

Answer 15

central and peripheral nervous system

Question 16

The ________ nervous system is responsible for responses such as
pupil dilation, increased heart rate, and increased respiration.

Answer 16

sympathetic

Question 17

Sensory and motor neurons of the ________ nervous system are
associated with activities traditionally thought of as conscious or
voluntary.

Answer 17

somatic

Question 18

The brain contains ________ of interconnected neurons and glia.

Answer 18

billions