ANAT 215 Lecture Notes - Central Nervous System, Endoplasmic Reticulum, Somatic Nervous System

47 views5 pages

Document Summary

Anatomy 215 (reading material: chapter 13: pages 347-356) Functions: master controlling and communication system: sensory input (somatic and visceral afferent) integration motor output (somatic (skeletal muscles, voluntary) and autonomic (cardiac and smooth muscles, involuntary) (sym/parasym) efferent) Dorsal and ventral roots merge into one spinal nerve as it emerges from the intervertebral foramen, then separates again into dorsal and ventral branches. Both divisions below act on the same organ with opposite effects sympathetic division. Histology of the neural tissue: two principal cell types: neurons (excitable nerve cells that transmit electrical signals) supporting cells (smaller cells that surround and wrap the neurons) Neurons: called nerve cells and are the structural units of the nervous system consists of a cell body and cytoplasmic processes dentrites: axons: Cell body: rough endoplasmic reticulum also called perikaryon or soma (interchangeably) 5-150 um in diameter contain usual cellular organelles except centrioles (no mitosis-can"t divide) Cytoplasmic processes: extension of the cytoplasm from the cell body.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions