Within the CNS, various sorts of incoming __________ information are integrated
and correlated. - ANS Sensory.
The CNS is connected to ______________ ___________, __________________,
and ____________ in peripheral parts of the body by the PNS. - ANS sensory
receptors, muscles, and glands
PNS consists of: - ANS cranial nerves that arise from the brain and spinal nerves
that emerge from the spinal cord.
Input component of the PNS consists of nerve cells called: - ANS sensory or
afferent neurons.
Sensory or afferent neurons conduct nerve impulses from ___________
_________________ in various parts of body to the CNS. - ANS sensory receptors
Output component consists of nerve cells called: - ANS motor or efferent neurons.
,Motor or efferent neurons originate within the CNS and conduct nerve impulses
from the CNS to ____________ and ___________. - ANS muscles and glands
PNS is subdivided into 2 parts: - ANS Somatic and Autonomic
Somatic: - ANS Body
Autonomic: - ANS Smooth muscle, cardiac muscle, glands
Somatic consists of: - ANS sensory neurons that convey information from
cutaneous and special sense receptors primarily in the head, body wall, and
extremities to the CNS and motor neurons from the CNS that conduct impulses to
skeletal muscles only.
Autonomic nervous system consists of: - ANS sensory neurons that convey
information from receptors primarily in the viscera ( internal organs ) to the CNS
and motor neurons from the CNS that conduct impulses to smooth muscles,
cardiac muscles, and glands.
Motor portion of the ANS consists of: - ANS Sympathetic and parasympathetic
The ___ provides links from and to the external environment. - ANS PNS
The PNS includes: - ANS - ALL neural structures outside the brain and spinal cord.
, - Sensory receptors, peripheral nerves and their associated ganglia, and efferent
motor endings.
Sensory receptors are: - ANS modified dendrites - specialized structures that
respond to changes in the environment. (stimuli)
Activation of a sensory receptor triggers impulses along the afferent fibers
coursing to the _______. - ANS brain
Classification of sensory receptors: - ANS - location in the body
- type of stimulus detected
- relative complexity of their structure
Exteroceptors - - ANS - sensitive to stimuli arising outside the body
- located at or near the body surface
- includes: touch, pressure, pain, temperature and most special sense organs.
Interoceptors - - ANS - respond to stimuli arising from within the body.
- excited by a variety of stimuli, including chemical, stretching, and temperature.
- activation may cause the feeling of pain, discomfort, hunger, and thirst.
Proprioceptors - - ANS - special category that responds to internal stimuli
- location is RESTRICTED to the musculoskeletal system
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