Biology Questions and Answers
of the muscles that depend on these
neurons.
- Concerning volition of the
individual how can the
reactions of the nervous
system be classified?
The efferences (reactions) of the
nervous systemvoluntary, when controlle can be classified id by the will,nto (^)
and involuntary, those not consciously
controlled. triggered by volition are the movemExamples of reactions (^) ents
of the limb, tongue and respiratory
muscles.efferences ar Examples oe those f involuntarythat command (^) the
peristaltic movements, the heartbeat
and the arterial wall mskeletal striated musclesuscles. are voluntarily The (^)
contracted; the cardiac striated and the
smooth contracted.muscles are involuntarily
- What are the functional
divisions of the nervous
system?
Functionallydivided into the somatic the nervous system nervous system can be (^)
and visceral nervous system.
The somatic nervous system includes
the central and peripheral structuresthat make voluntary control of
efferences. Central and peripheral
structures that pof the vegetative (articipateunconscious) in the control
functions of the body are included in the
concept of visceral nervous system.
The efferent portion of the visceral
nervous systemnervous system. is called the autonomic
- What are the two divisions
of the autonomic nervous
system?
The autonomic nervous systemdivided into the sympathetic nervous is (^)
system and the parasympathetic
nervous system.
The sympatheticcomprehends the nerves that com nervous system (^) e out
from the ganglia of the neural chains
lateral to spinal cord) and thus arthe spinal colume distant fn (near therom (^)
the tissues they innervate. The central
and peripheral nethose neurons are also part ourons associated tof the
sympathetic.
The parasympathmade of nerves and central oretic nervous system is
peripheral neurons related to thvisceral ganglia, neural ganglia situatede (^)
near the tissues they innervate.
- What is the antagonism
between the sympathetic and
the parasympathetic neural
actions?
In general the actionssympathetic and the parasympathetic of the (^)
are antagstimulatesonistic, somethin i.e., while oneg the other inhibits (^)
and vice versa. The organs, with few
exceptions, gtwo systems anet efferences fd the antagonismrom th ese
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