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RIO SALADO BIO 201
RIO SALADO BIO 201 EXAM 3|| ACTUAL EXAM
ALL QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+|| LATEST AND COMPLETE
UPDATE 2024 WITH VERIFIED SOLUTIONS||
ASSURED PASS!!!
RIO SALADO BIO 201 EXAM 3|| ACTUAL EXAM
ALL QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+|| LATST AND COMPLETE
UPDATE 2024 WITH VERIFIED SOLUTIONS||
ASSURED PASS!!!
what is the function of the parasympathetic nervous system - ANSWER: calm
down, digestion, all autonomic responses that don't have to do with stress .
where are parasympathetic going located? - ANSWER: closer to organs that they
effect
where do parasympathetic nerves originate? - ANSWER: cranialsacral
how many meet at a ganglia? - ANSWER: 2
how does the sympathetic get enough energy to respond to fight or flight? -
ANSWER: slows or shutsdown the parasympathetic
What type of cells can generate action potentials? - ANSWER: cells with excitable
membranes
Where are nodes of Ranvier are found? - ANSWER: on myelinated, peripheral
neural processes
postsynaptic potential - ANSWER: A graded potential that is the result of a
neurotransmitter released into the synapse between two neurons
,2|Pag e
The two major classes of graded potentials - ANSWER: generator potentials and
post-synaptic potentials
Reflexes - ANSWER: rapid, automatic responses to stimuli
Saltatory conduction - ANSWER: the signal jumping from node to node along the
axon
facilitated zone - ANSWER: Neurons that are far away from the center of the
neuron pool and thata re not easily excited by an incoming stimulus
axosomatic synapse - ANSWER: A synapse formed between the axonal ending of
one neuron and the cell body of another neuron
all-or-non phenomenon - ANSWER: the action potential either happens
completely or it doesn't happen at all
peripheral nervous system (PNS) - ANSWER: subdivided into two parts: the
sensory or afferent division (carrying sensory impulses to the CNS), and the motor
or efferent division (carrying impulses from the CNS to muscles and glands)
motor division of the PNS - ANSWER: subdivided into two main parts: the
somatic nervous system (also known as the voluntary nervous system because it
allows the human body to consciously control its skeletal muscles), and the
autonomic nervous system (also known as the involuntary nervous system because
it regulates activities beyond conscious control such as smooth muscles, cardiac
muscles, and glands)
autonomic nervous system - ANSWER: subdivided into two main parts: the
sympathetic nervous system (which mobilizes body systems during activity), and
,3|Pag e
the parasympathetic nervous system (which conserves energy, and promotes
maintenance activities during times of rest)
supporting cells of nervous tissue - ANSWER: smaller cells that surround and
wrap the neurons
neuroglia (or glial cells) - ANSWER: There are six types of neuroglia: four found
in the CNS and two found in the PNS. Each type of glial cell has a specific
function, but in general glial cells provide support and structure for the delicate
neurons.
what two chemicals does stress use to respond? - ANSWER: neurotransmitters
and hormones
what neurotransmitter is sent across ganglia to the postganglionic cell to initiate
actions? - ANSWER: ACH
what neurotransmitter is sent from postganglionic fibers to final synapse to initiate
action? - ANSWER: norepinephrine
what hormone is released from preganglionic fibers and where is it released to? -
ANSWER: AcH to adrenal glands
is norepinephrine a hormone or neurotransmitter? - ANSWER: both
what does adrenal gland release? - ANSWER: epinephrine and norepinephrine
autonomic nervous system broken into what two systems? - ANSWER:
sympathetic and parasympathetic
, 4|Pag e
sympathetic nervous system responsible for what? - ANSWER: fight or flight
response(stress response)
nerves of sympathetic originate in what area? - ANSWER: thoracolumbar
where are sympathetic ganglia located? - ANSWER: near spinal cord
what is the ganglion function? - ANSWER: houses millions of synapses
which system has longer preganglionic fibers? - ANSWER: parasympathetic
which system has longer postganglionic fibers? - ANSWER: sympathetic
does norepinephrine stimulate or inhibit? - ANSWER: both to the same systems at
the same time.
what is released after postganglionic cells in parasympathetic? - ANSWER: AcH
what part of parasympathetic nerves pass down the length of the spinal cord? -
ANSWER: sacral nerves
how many cranial nerves are there? - ANSWER: 12
are cranial nerves sensory or motor? - ANSWER: both
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