Neuron Anatomy
What is the most basic cell of Nervous System
Neuron
What is another term for Motor Neurons, in other words this term takes impulses away from the CNS?
Efferent or descending
The folds in the brain
Gyri or gyrus
List the layers of meninges from the outer most to the inner most.
What is dura matter, arachnoid matter, pia matter
What must be reached for an action potential to occur?
Threshold or -55 mv
What conduct's impulses toward the cell body
Dendrite
What is the term for a chemical messenger?
Neurotransmitter
Part of brain we cut right down the middle to make it two even halves.
Longitudinal fissure.
What does BBB stand for?
Blood Brain Barrier
This is the term for the nerve impulse.
Action Potential
What conduct's impulses away from the cell body
Axon
What are the two main divisions of Nervous System
Central nervous system and Peripheral nervous system
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
What is the range of the voltage on the Action Potential.
-70 to 110 mv.
What is the Space between a dendrite and axon known as?
synapse
what are the two subdivisions of the PNS?
Autonomic and Somatic
Number of cranial nerves, name at least 3.
12 pairs
This layer is spread out like a spider.
Arachnoid layer.
The depression portion of the action potential is called what?
Hyperpolarization
What is the term for carrying impulses towards the CNS
Afferent or Ascending
The phrase the defines the Sympathetic nervous system and is often used with adrenaline, it is a response to a situation.
Fight or Flight
What are the 4 main lobes of the brain?
Frontal, Temporal, Parietal, Occipital
Name the four stages of consciousness.
Alertness, Stupor, Drowsiness, Coma.
What can't happen in the hyperpolarization phase.
Another generation of an AP.