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
The brocas area deals with what function
speech
What part of a neuron is made up of protein and fatty substance?
Myelin Sheath
A neuron that connects sensory and motor nerves
interneuron
2 subdivisions of the PNS
Autonomic and somatic
Astrocyte - brace neurons
Ependymal - circulate CSF
Microglia - Phagocytes
Oligodendrocytes - Produce Myelin
Schwann Cell - Make up the myelin
Satellite cell - Protect cell bodies
A neuron at rest is called
Polarized
What is the gap between neurons called?
Synaptic cleft
Special chemicals that transmit info from one neuron to another is called what?
neurotransmitters
Two subdivisions of the Autonomic Nervous System
What is Parasympathetic Division- "rest and digest" and Sympathetic "Fight of Flight"
What are the three main parts of the neuron?
dendrites, axon, axon terminals
What are the 4 main lobes?
1. Frontal
2. Parietal
3. Temporal
4. Occipital
Unmyelinated fibers are considered
grey matter
What system deals with your emotions and where is it found??
Limbic, Hypothalamus
The central nervous system is made of these organs
brain and spinal cord
what does an axon terminal hold?
neurotransmitters
what connects the two brain hemispheres
corpus callosum
what purpose does Myelin Sheath provide?
Allows information to travel more efficiently
neurons taking information back to your body are called what?
motor neurons
What is released to start a nerve impulse
Sodium
What part of the brain serves as a relay station?
what is the gap btw myelin sheaths on the axon called?
nodes of ranvier
WHat are the three parts of the diencephalon?
Thalamus, hypothalamus, epithalamus
What are the three layers covering the brain from inside to outside?
Pia, arachnoid, dura matter