Nervous System Part 1
Central Nervous System
One of two major branches of the nervous system. Main organs: Brain and Spinal Cord
Peripheral Nervous System
One of two major branches of the nervous system. Main organs: sensory receptors and ganglia
Somatic Nervous System
Part of the peripheral nervous system. Things you consciously control
Autonomic Nervous System
Part of the peripheral nervous system. Things that are involuntary
Sympathetic nervous system
Part of the autonomic nervous system. Fight or flight mode. Uses adrenaline
Parasympathetic nervous system
Part of the autonomic nervous system. Rest and digest
A layer of protection of the nervous system. Liquid that acts like a cushion. Made in the ventricles
A layer of protection of the nervous system. Membranes that cover the brain and spinal cord. Three types.
A layer of protection of the nervous system.
The outermost meninge. Tough mother
The middle meninge. Looks like a spider web
The innermost meninge. Delicate mother. The layer that is actually on the surface of the brain and spinal cord.
Support cells that make up 90% of the brain and spinal cord.
The tail of a neuron. It carries an impulse away from the cell body.
The parts of the neuron that brings information to the cell body. Neurons have multiple dendrites.
The major part of the neuron that does the processing. It can't divide.
Neuroglial cells that wrap around the axon. This allows for saltatory conduction
Node of Ranvier
The gap between schwann cells on a myelinated neuron.
The process where an impulse jumps from one node of ranvier to the other to send an impulse quickly
Neurons that have schwann cells. White matter of the brain
Neurons that lack schwann cells. Gray matter of the brain.
The functions of the nervous system
Sensory, Integrative, and Motor