Chapter 13 - The Nervous System - Neural Tissue Nervous...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
The Nervous System - Neural Tissue Nervous System Divisions: o Central Nervous System (CNS) Information Processing o Peripheral Nervous System (PNS) - nerves and ganglia (groups of cell bodies) Scouting what is happening in environment and bringing to your CNS Sends out output from the CNS to let you know what to do with your muscles Sensory (Afferent) Motor (Efferent) pain, temperature, pressure, touch All 5 senses (sight, sound, "Exiting" the CNS Motor Divisions: 1. Somatic Nervous System - (voluntary - striated/skeletal) 2. Autonomic Nervous System - Histology of Nervous System o Neurons - main function is to carry on an action potential; receive information, process it, and send out an action potential to cause a muscle to contract. o Neuroglia ('glue') - supporting or keeping the nervous system together. Neuroglia in CNS In PNS 1. Ependymal Cells - lines ventricles (brain) & central canal (spinal cord) producing and circulating CSF (cerebrospinal fluid) Spinal tap (below L2) Epethial-like specialized cell 2. Microglia - 'small glue' (thorny 1. Schwann Cells - (like Oligo & Astrocyte) make myelin; surrounds axons of PNS neurons repairs after an injury 2. Satellite - (like microglia & astrocytes) surrounds cell bodies in ganglia
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
bush under the microscope) remove cell debris, waste, & pathogens by phagocytosis lysosome-like 3. Astrocytes - ('star cells') star shaped cell (cups at end) connects blood vessel -
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

Chapter 13 - The Nervous System - Neural Tissue Nervous...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online