BIO 253 EXAM 5 CH. 12-14 REVIEWED QUESTIONS AND ANSWERS
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BIO 253
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BIO 253
BIO 253 EXAM 5 CH. 12-14 REVIEWED
QUESTIONS AND ANSWERS
neuroglia - CORRECT ANSWER-cells that support the
activities of neurons
central nervous system
and peripheral nervous system - CORRECT ANSWER-what
are the two subdivision of the nervous system
neurology - CORRECT ANSWER-deals with no...
BIO 253 EXAM 5 CH. 12-14 REVIEWED
QUESTIONS AND ANSWERS
neuroglia - CORRECT ANSWER-cells that support the
activities of neurons
central nervous system
and peripheral nervous system - CORRECT ANSWER-what
are the two subdivision of the nervous system
neurology - CORRECT ANSWER-deals with normal functioning
and disorders of the nervous system
neurologist - CORRECT ANSWER-a physician who diagnosis
and treats disorders of the nervous system
central nervous system - CORRECT ANSWER-consists of the
brain and the spinal cord; processes many different kinds of
incoming sensory information; the source of thoughts,
emotions, and memories. Most signals that stimulate muscles
to contract and glands to secrete originate here
,peripheral nervous system - CORRECT ANSWER-consists of
all nervous tissue outside of the brain and the spinal cord;
includes nerves and sensory receptors.
nerve - CORRECT ANSWER-a bundle of hundreds of
thousands of axons plus associated connective tissue and
blood vessels that lies outside the brain and spinal cord.
12 - CORRECT ANSWER-how many cranial nerves are there?
31 - CORRECT ANSWER-how many pairs of spinal cord
nerves are there?
sensory receptor - CORRECT ANSWER-a structure of the
nervous system that monitors changes in external or internal
environment.
sensory and motor - CORRECT ANSWER-what are the two
divisions of the peripheral nervous system
sensory (afferent) division - CORRECT ANSWER-conveys
input into the CNS from sensory receptors in the body.
Provides the CNS sensory information about the somatic
senses and special senses
special senses - CORRECT ANSWER-smell, taste, vision,
hearing, and equilibrium
motor (efferent) division - CORRECT ANSWER-conveys output
from the CNS to effectors (muscles and glands). This division is
further subdivided into somatic nervous system and an
autonomic nervous system.
,somatic nervous system (SNS) - CORRECT ANSWER-
conveys output from the CNS to skeletal muscles only; motor
responses can be consciously controlled, the action of this part
of the PNS is voluntary.
autonomic nervous system (ANS) - CORRECT ANSWER-
conveys output from the CNS to smooth muscles, cardiac
muscles, and glands; motor responses are not consciously
controlled, the action of this part of the PNS is involuntary.
sympathetic nervous system
parasympathetic nervous system - CORRECT ANSWER-what
are the two subdivision of the autonomic nervous system
parasympathetic nervous system - CORRECT ANSWER-takes
care of the "rest and digest" activities
sympathetic nervous system - CORRECT ANSWER-helps
support exercise or emergency actions- the so called "fight or
flight" responses.
enteric nervous system - CORRECT ANSWER-third part of the
autonomic nervous system; confined to the walls of the
gastrointestinal tract. Helps regulate the activity of the smooth
muscles and glands of the GI tract. Can function independently,
but is also regulated by other branches in the ANS.
sensory
integrative
motor - CORRECT ANSWER-what are the three main functions
of the nervous system
sensory function - CORRECT ANSWER-sensory receptors
detect internal stimuli, such as an increase in blood pressure,
or external stimuli (raindrop falling on your skin). this sensory
information is then carried into the brain and spinal cord
through cranial and spinal nerves
, integrative function - CORRECT ANSWER-the nervous system
processes sensory information by analyzing it and making
decisions for appropriate responses
motor function - CORRECT ANSWER-once sensory
information is integrated, the nervous system may elect an
appropriate motor response by activating effectors through
cranial and spinal nerves. stimulation of the effectors causes
muscles to contract and glands to secrete.
hormones - CORRECT ANSWER-endocrine cells release tiny
amounts of chemicals into circulating fluids; produce varying
effects; target = virtually all body cells (but most have
receptors); generally control growth and metabolism
endocrine system - CORRECT ANSWER-where are hormones
found
nerves - CORRECT ANSWER-timing for responses is
milliseconds; utilize highly specialized cells; carry
electrochemical impulses. high energy expenditure. generally
monitor external environment and respond
85 billion - CORRECT ANSWER-how many neurons does the
brain have
100 million - CORRECT ANSWER-how many neurons does the
spinal cord have
enteric plexuses - CORRECT ANSWER-in walls of GI tract
organs; neuron networks that help aid digestive regulations
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