Nervous System Flashcards
Central nervous system
Brain and Spinal cord
Peripheral nervous system
Transmits info to and from the central nervous system (autonomic nervous system) and ( somatic nervous system)
Autonomic
Controls and self regulates the actions of the internal glands (sympathetic) or (parasympathetic )
Somatic
Voluntary control such as muscles
Sympathetic
Arousal
Parasympathetic
Calming
Cell body
Cells life support center
Dendrites
Receives info from other cells
Myelin sheath
Covers axon in neurons and helps speed neural impulses
Axon
Sends message away from cells to other cells
Terminal branches
Form junctions w/ other cells
Nervous system
An extensive network of specialized cells that carry info to all parts of the body (brain and spinal cord)
Action potential
A neural impulse that travels down axon like a wave
Neurotransmitters
Chemicals that send signals across the synaptic gap
