Cells found throughout the nervous system that provide various types of support for neurons
Essentially a signal that moves through the neuron
They occur by means of an action potential
Resting potential = - 70 millivolts
* Stimulation that causes the cell membrane to open briefly
*Very brief shift in a neuron's electrical charge that travels along an axon
ALL of NONE Law
Once a neural impulse FIRES, they fire (there is no going back)
The STRENGTH of the stimulus may affect the RATE at which the neuron fires
What are the TWO types of Nervous Systems?
Central Nervous System (CNS)
Peripheral Nervous System (PNS)
What are the TWO parts of the PNS?
Somatic Nervous System - (voluntary muscles)
Autonomic Nervous System - (involuntary muscles such as the heart)
What are the 4 lobes of the brain and what does each provide?
* Frontal - Movement
* Temporal - Auditory
* Parietal - Touch
* Occipital - Vision
What does the HINDBRAIN contain?
Medulla - breathing, circulation
Pons - sleep and arousal
Cerebellum - movement and coordination
What does the FOREBRAIN contain?
** Largest part of the brain
& other structures
Function of Hypothalamus
Regulates the basic biological needs - 4 Fs
Median Forebrain bundle - bunch of axons that are found in the hypothalamus
What are the two components of the Limbic System?
- Amygdala *deals with emotions; learned FEAR responses
- Hippocampal Area (Hippocampus) * deals with memory