PENN FOSTER ANATOMY & PHYSIOLOGY EXAM QUESTIONS WITH COMPLETE SOLUTIONS LATEST UPDATE
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PENN FOSTER
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PENN FOSTER
PENN FOSTER ANATOMY & PHYSIOLOGY EXAM QUESTIONS WITH COMPLETE SOLUTIONS LATEST UPDATE
The nervous system is the body's
control center
The central nervous system consists of
brain and spinal cord and their associated structures
The peripheral nervous system is comprised of
the nerves travel...
PENN FOSTER ANATOMY & PHYSIOLOGY EXAM QUESTIONS
WITH COMPLETE SOLUTIONS LATEST UPDATE
The nervous system is the body's
control center
The central nervous system consists of
brain and spinal cord and their associated structures
The peripheral nervous system is comprised of
the nerves traveling from the brain or spinal cord to the target organs and back
The somatic nervous system carries out
conscious activities, such as walking, eating, etc
The autonomic nervous system performs functions that
don't require conscious thought, such as breathing, blood pressure, and heart rate
The basic structural and functional unit of the nervous system is the
neuron or nerve cell
2 Important types of neurons are
sensory neurons and motor neurons
Sensory neurons carry signals of
touch, taste, etc to the brain
Motor neurons carry instructions from
the brain to the muscles, causing them to move
The primary purpose of a neuron is to
transmit an electrical signal that acts either to signal other neurons or to cause a change
in a target organ, such as a muscle or gland
Depolarization is
the change in membrane potential that occurs when a nerve is stimulated
Repolarization is
the reestablishment of normal resting membrane potential
Some of the more important neurotransmitters include
, acetylcholine, norepinephrine, gamma-aminobutyric acid (GABA), dopamine,
enkephalins, serotonin
Reflexes
involuntary motor movements initiated by specific sensory input
Receptors
nerve endings that detect changes in the environment
Gustatory Sense
sense of taste
Olfactory Sense
sense of smell
Auditory Sense
sense of hearing
The third eyelid found in some species is referred to by which name
nictitating membrane
Which receptors are involved with the proprioception sense
stretch receptors in the muscles, tendons, and ligaments
Ipsilateral reflex refers to
reflex where the stimulus and response are both on the same side of the body
What is the test for a proprioception deficit
flip over a foot while the animal is standing and see if the animal corrects the position
What is true of gray matter
it makes up the outer tissue layer in the brain
Which causes the greatest degree of light refraction in the eye
cornea
Rotation of the head is detected primarily by the
semicircular canals
The _____ connects the two halves of the brain
corpus callosum
Which structure contains the muscles that adjust the shape of the lens of the eye
ciliary body
The reflective tapetum lucidum is formed on the
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