36 terms

Nervous System

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Frontal Lobe
The lobe at the front of the brain associated with movement, speech, and impulsive behavior.
Temporal Lobe
An area of the cerebral cortex located near the temples and responsible for receiving auditory information.
Occipital Lobe
Located about the cerebellum and that processes visual information.
Parietal Lobe
Back of the brain and is responsible for processing sensory information.
Frontal Examples
Movement, Speech, Memory and Social Behavior
Temporal Examples
Vision, Comprehension, Memory, and Emotion
Occipital Examples
Controlling Vision
Parietal Examples
Processing Language and Mathematics
Brainstem
Controls the flow of messages between the brain and most of the body
Brainstem Examples
Breathing, Swallowing and Heart Rate
Parts of the Brainstem
Pons, Medulla Oblong, and Midbrain
Three membranes that help to protect the brain and circulate cerebrospinal fluid
Dura, Arachnoid, and Pia
Ventricles
Replenish and circulate the cerebrospinal fluid
Hydrocephalus
Builds up the cerebrospinal fluid
Afferent
Transports messages into the CNS (sensory)
CNS
Central Nervous System
Efferent
Transports messages out of the CNS (motor)
Cell Bodies consist of ________ _______
Gray Matter
Myelinated Axons Consist of _______ __________
White Matter
Nerves that branch to various parts of the body
Spinal Nerve
Central Canal
Contains cerebrospinal fluid
Myelin
Increases the speed at which impulses are conducted
Synapse
A gap between two neurons that diffuse neurotransmitters
Dendrites
Branchlike parts of a neuron that are specialized to receive information.
action potential
a neural impulse; a brief electrical charge that travels down an axon
Polarization
When the outside of the cell is considered more positive while the inside is at -70 Millivolts
Depolarization
The process during the action potential when sodium is rushing into the cell causing the interior to become more positive
When one sodium channel is open...
It causes the next channel to open
Repolarization
Return of the cell to resting state, caused by reentry of potassium into the cell while sodium exits the cell
There are ____ pairs of spinal nerves
31, 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal
Carries messages to and from the central nervous system (CNS)
Peripheral nervous system
connects brain and peripheral nervous system
spinal cord
Controls voluntary muscles and transmits sensory information to the CNS
somatic nervous system
Controls involuntary body functions
autonomic nervous system
arouses body to expend energy
sympathetic nervous system
calms the body, conserves energy
parasympathetic nervous system