Nervous System
Name 3 functions of the nervous system
What is Sensation, Integration, Motor output, higher mental functions, emotions
these provides support and protection of neurons, they are smaller than neurons and more numerous
What is Neuroglia
What are the three basic functional classes of nerves?
Sensory neurons, Motor neurons, and Interneurons
What part of a neuron is made up of protein and fatty substance?
Myelin Sheath
2 subdivisions of the PNS
Autonomic and somatic
what does CNS stand for?
Central Nervous System
what does PNS stand for?
peripheral nervous system
Synapse
Two subdivisions of the Autonomic Nervous System
What is Parasympathetic Division- "rest and digest" and Sympathetic "Fight of Flight"
three parts of a neuron
1- cell body (soma) 2- dendrites 3- axon 4- myelin sheaths 5- axon terminals 6- nodes of ranvier
What are the 4 main lobes?
1. Frontal
2. Parietal
3. Temporal
4. Occipital
Gather Information
The central nervous system is made of these organs
brain and spinal cord
what does an axon terminal hold?
neurotransmitters
name any three neurotransmitters
Acetylcholine, norepinephrine, dopamine, serotonin
what purpose does Myelin Sheath provide?
Allows information to travel more efficiently
An action potential travels along this
A neuron's axon
Special chemicals that transmit info from one neuron to another is called what?
neurotransmitters
what is the gap btw myelin sheaths on the axon called?
nodes of ranvier
What is the most important cell in the nervous system called?