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Chapter 14 - Nervous Tissue - Exam 2

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Functions of the nervous system

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Functions of the nervous system

-sensory function
-integrative function
-motor function

Integrative Function

-spinal cord, brain activity
-analyzes the change and makes decisions on what should happen

Sensory Function

-senses changes in stimuli in internal / external environment

-responds to the stimuli after decision is made

Divisions of the Nervous System

-the nervous system is divided into Central NS (CNS) and peripheral NS (PNS)
-everything else is subset of these two

Central Nervous System

-consists of the brain and spinal cord

Peripheral Nervous System

-all other nervous system structures (ex: sensory receptors, nerves, ganglia, plexuses, cranial nerves, spinal nerves
Nerve isn't same as neuron!
Nerve = neurons axons accumulate - whole bunch of axons
Neuron = cell

Sensory receptors

-part of PNS
-part of a sensory neuron that receives info about the world and relates it to your nervous system

-a long structure containing bundles of axons

-clusters of neuron cell bodies outside the CNS - only in PNS
(Nuclei = samething, but in CNS)

an interweaving network of anterior rami of spinal nerves

The PNS id divided into _____________

-somatic nervous system
-autonomic nervous system

Somatic nervous system

-division of the PNS
-controls skeletal muscle (voluntary)

Autonomic Nervous System

-division of the PNS
-Autonomic nervous system
-controls smooth muscle, cardiac muscle, and glands
-involuntary
-further divided intp the sympathetic and parasmpathetic

There should be a ____________ between the parasympathetic and sympathetic NS.