Organizational Approaches to Nervous System:
· Functional Approach- Based on the function of the nervous system
o Examples: voluntary functions, involuntary functions
· Developmental Approach- based on the development of the nervous system and neurodevelopmental terms
· Functional Approach- Based on the function of the nervous system
o Examples: voluntary functions, involuntary functions
· Developmental Approach- based on the development of the nervous system and neurodevelopmental terms
Nervous System Cells
Neurons- communication within the nervous system and with organs, muscles and glands
Astrocytes- located in the CNS, they maintain neuronal environment, repair/feed neurons, modulate neural transmission, modulate breathing
Oligodendroglia- located in the CNS, produce myelin
Schwann cell- located in PNS, produce myelin
Synapse- a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter
Astrocytes- located in the CNS, they maintain neuronal environment, repair/feed neurons, modulate neural transmission, modulate breathing
Oligodendroglia- located in the CNS, produce myelin
Schwann cell- located in PNS, produce myelin
Synapse- a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter
Parts of a Neuron
Neurotransmitters:
- Acetylcholine- muscle contraction in PNS, memory
- Glutamate- excitation of CNS
- GABA- inhibits CNS activity
- Dopamine- motor control, brain reward system (feeling of well being)
- Epinephrine- attention, alertness, mood
- Norepinephrine- attention, alertness, mood
- Serotonin- excites/inhibits nervous system