Ch 3 Review Flashcards
A(n) ________ is a sudden, permanent change in a sequence of DNA.
mutation
________ refers to a person’s genetic makeup, while ________ refers to a person’s physical characteristics.
Genotype; phenotype
________ is the field of study that focuses on genes and their expression.
Epigenetics
Humans have ________ pairs of chromosomes.
23
The ________ receive(s) incoming signals from other neurons.
dendrites
A(n) ________ facilitates or mimics the activity of a given neurotransmitter system.
agonist
Multiple sclerosis involves a breakdown of the ________.
myelin sheath
An action potential involves Na+ moving ________ the cell and K+ moving ________ the cell.
inside; outside
Our ability to make our legs move as we walk across the room is controlled by the ________ nervous system.
somatic
If your ________ is activated, you will feel relatively at ease.
parasympathetic nervous system
The central nervous system is comprised of ________.
brain and spinal cord
Sympathetic activation is associated with ________.
pupil dilation and increased heart rate
The ________ is a sensory relay station where all sensory information, except for smell, goes before being
sent to other areas of the brain for further processing.
thalamus
Damage to the ________ disrupts one’s ability to comprehend language, but it leaves one’s ability to
produce words intact.
Wernicke’s Area
A(n) ________ uses magnetic fields to create pictures of a given tissue.
MRI
Which of the following is not a structure of the forebrain?
substantia nigra
The two major hormones secreted from the pancreas are:
glucagon and insulin
The ________ secretes messenger hormones that direct the function of the rest of the endocrine glands.
pituitary
The ________ gland secretes epinephrine.
adrenal
The ________ secretes hormones that regulate the body’s fluid levels.
pituitary
