Nervous System 1
Basic Element of Nervous System
Neuron
Motor Neurons
Efferent
consists of all the nerves
PNS
How many pair of cranial nerves are there
12
How many pair of spinal nerves
31
Conduct Impulses toward the cell
Dendrite
Interneurons
Associative
Two parts of diencephalon
thalamus and hypothalamus
dura mater, arachnoid, pia mater
Two divisions of autonomic nervous system
sympathetic and parasympathetic system
Conduct impulses away from the cell
Axon
Two main divisions of Nervous System
Central and Peripheral
responsible for coordination of muscle movements, balance and posture, and muscle tone.
Cerebellum
watery liquid fills the brain’s four ventricles, or hollow spaces, and acts as a shock absorber
Cerebrospinal Fluid
Also known as a stroke
cerebrovascular accident (CVA
Space between dendrite and axon
synapse
Subdivision of PNS
Autonomic Nervous System
Fight or Flight
Sympatheitc
disease of the central nervous system that results in progressive loss of muscle control
Multiple Sclerosis
progressive neurodegenerative disease that occurs when nerve cells in the brain die.
Alzheimer's
Sensory Neurons
Afferent
Consists of brain and spinal cord
central nervous system
cerebrum, diencephalon, cerebellum, brain stem
Three parts of brain stem
midbrain, pons, medulla oblongata
central nervous system (neurological) disorder in which brain activity becomes abnormal, causing seizures or periods of unusual behavior, sensations and sometimes loss of awareness.
Epilepsy