The Nervous System II
Terms
undefined, object
copy deck
- Sensory fuction( gathering information):: inside body?
- like ion/ nutrient levels
- Sensory fuction( gathering information):: Outside Body?
- temperature, sounds, light, oxygen levels
- Integrative functions (bringing information together):
- thoughts or decision making + sensations or perceptions
- Motor Function : respnse to sensory input
- muscle contraction + Gland activation
- What are the divisons of the nervous system?
-
Central vs. Peripheral
Autonomic vs. Somatic
Sympathetic vs. Parasympathetic - What is a Neuron and what is Parts of a Neuron?
-
Neurons react to changes and conduct impulses
Parts: 1. Cell Body (contains nucleus
2. Dendrites (receive impulse)
3. axons (carry impulse away) - Neuroglia
-
surrounding or between neurons
give support to neurons
aka glial cells - 5 types of Neuroglia cells?
-
1. Astrocytes
2. Ependymal
3. Microglial
4. Oligodendrocytes - Astrocytes
-
*star shaped
*found between nervous tissue and blood cells
*Help regulate ion/nutrient levels. - Ependymal
-
*squamous shaped
* inner linings of special areas of brain - Microglial
-
*mobile cells
*prtects CNS from infection - Oligodendrocytes
-
*surround axons of CNS
*form myelin, but no sheath - Schwann
-
*surrounds axons of PNS
*found within a sheath (like a sock)
*speeds conduction of impulses
*form "white matter" of nervous tissue
*Form nodes of ranvier
*gaps between cells