Nervous System
Name 3 functions of the nervous system
What is Sensation, Integration, Motor output, higher mental functions, emotions
what does PNS stand for?
peripheral nervous system
Found at the end of the axon
synapses
What are the three basic functional classes of nerves?
Sensory neurons, Motor neurons, and Interneurons
2 subdivisions of the PNS
Autonomic and somatic
what does CNS stand for?
Central Nervous System
Gather Information
There are approximately how many neurons in the human brain?
100 billion
Two subdivisions of the Autonomic Nervous System
Parasympathetic and Sympathetic
three parts of a neuron
1- cell body (soma) 2- dendrites 3- axon
what purpose does Myelin Sheath provide?
Allows information to travel more efficiently and fast
neurons taking information back to your body are called what?
motor neurons
The central nervous system is made of these organs
brain and spinal cord
What are the 4 main lobes?
1. Frontal
2. Parietal
3. Temporal
4. Occipital
What is the most important cell in the nervous system called?
Neurons
what is mean by voluntary action?
controlled by our conscious effort
An action potential travels along this
A neuron's axon
Synapse
What part of a neuron is made up of protein and fatty substance?
Myelin Sheath
what mean by involuntary action ?
automatic reaction that happens instantly without the control