ANP 1106 Lecture 9: ANP1106Lecture9Summary

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Jacqueline Carnegie

Document Summary

Anatomy of the nervous system part - neurons (ch 11) Somatic ns: voluntary: from cns to skeletal muscle. Autonomic ns: involuntary (visceral motor): from cns to cardiac and smooth muscle and glands: sympathetic division: fight or flight, parasympathetic division: resting and digesting. Supporting cells: neuroglia, wrap more delicate neurons. Neurons: excitable nerve cells that transmit electrical signals. Supporting cells in the cns: neuroglia: astrocytes: star shaped, most abundant and versatile glial cells. Mop up leaked potassium, and maintain stable environment for neurons: microglia: long, thorny processes which touch nearby neurons and monitor their health. Supporting cells in the pns: satellite cells: surround neuron cell bodies in ganglia. Similar functions to astrocytes: schwann cells: form myelin sheaths around larger neurons in the pns: vital to peripheral nerve cell regeneration. Know to label: cell body, dendrites, axon, axon hillock, myelin sheath, node of. According to direction: nerve impulses travel with regard to cns.