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Stack #22194

Nervous System-Body Structure

QuestionAnswer
The structures of the nervous system are divided into two central and peripheral nerous sytem
the structures of the nervous system central and peripheral
What are the three general functions of the nervous system a sensory function, an integrative function and a motor function
The nerve glue neuroglia
What is the most abundant of the nerve cells neuroglia
What are the functions of the glia cells protect, insulate, nourish, and generally care for the delicate neurons
the two common glia cells astrocytes and ependymal cells
the three parts of a neuron dentrites, cell body and axon terminals
nerve fibers are encased by myelin sheath
The functions of the myelin sheath protection and insulation
This neuron carries information from the periphery toward the CNS sensory
this neuron carries information from the CNS toward the periphery motor
What neuron is found only in the CNS interneuron
An electrical signal that conveys information along a neuron nerve impulse
The nerve impulse is also called action potential
What three processes are included in the action potential polarization, depolarization, and repolarization
Characterized the resting state of the neuron polarization
The process of changing the electrically state, during stimulation depolarization
Returning to the neuron's resting state repolarization
the chief intracellular ion in the neuron potassium
The chief extracellular ion in a neuron sodium
The "jumping from one node to another in a nerve impulse saltatory conduction
A junction, or space, between two neurons synapse
tiny vesticles that store chemical substances neurotransmitters
The brain is divided into four major areas cerebrum, diencephalon, the brain stem, and the cerebellum
the largest part of the brain cerebrum
The motor speech area Broca's area
The thalamus is located in the brain diencephalon
the pons is located in the brain brain stem
What brain lobe contains the olfactory area temporal
What lobe of the brain is the sensation of temperature,pain, light touch located parietal lobe
The "emotional brain" Limbic system
Dreaming occurs in what stage of sleep REM
The "hard mother" dura mater
the arrangement of cells that selects the substances allowed to enter the CNS from the blood blood-brain barrier
What type of nerve tract carries information from the periphery, up to the spinal cord sensory tracts
the major motor tract pyramidal tract
An involuntary response to a stimulus reflex
The spinal cord serves three major functions (pathways) sensory pathways, motor pathways and reflex center
The four basic components of the reflex arc receptor, afferent neuron, efferent neuron, effector organ
Cranial nerve concern with sense of smell olfactory
Cranial nerve concern with movement of the eyeball trochlear,abducens
Cranial nerve associated with speech and swallowing hypoglossal
The three spinal nerve plexuses cervical, brachial, and lumbosaral plexuses
Results of damage to the phrenic nerve impaired breathing
Results of damage to the axillary nerve crutch palse
The autonomic nervous sytem is divided into two systems sympathetic, and parasympathetic
What autonomic nervous system involves increased heart rate and strengh of contraction sympathetic response
What autonomic nervous system constricts the pupil parasympathetic response
The "feed and breed" system parasympathetic nervous system
Created by: katyrn
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