Chapter 3 - The Anatomy of the Nervous System

Chapter 3 - The Anatomy of the Nervous System - A ATOMY OF...

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

View Full Document Right Arrow Icon
(Chapter 3) Web links: Human Cerebral Cortex: lobes, gyri and sulci (fissures): http://www.marymt.edu/~psychol/brain.html Brain Atlases From: http://www9.biostr.washington.edu/ http://www.med.harvard.edu/AANLIB/home.html Check chapters related to anatomy of the Nervous System. Some figures are not available on the Internet. http://www9.biostr.washington.edu:80/cgi - bin/DA/PageMaster? atlas:NeuroSyllabus+ffpathIndex/Master^Frame^Syllabus+2 To the naked eye, the Nervous system can be divided into two major parts (Figs. 3.1; 3.2): , , protected by bone, divided into: Brain , located in the skull Spinal cord , located in the spine. 2. Peripheral nervous system , , which is not protected by bone, divided into: The somatic nervous system, interacts with the external environment: -Receives information: sensory function, afferent. (mnemonic: a rrive) -Mediates motor responses: motor function, efferent . (mnemonic: e xit) Autonomic nervous system. Regulates organs and glands .
Background image of page 1

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

View Full DocumentRight Arrow Icon
afferent (sensory) pathways from the organs to the CNS efferent (motor) pathways from the CNS to the organs. Two kinds of efferent nerves 1. Sympathetic nerves, for threatening (emergency) situations (escape, fight, etc) by stimulating and mobilizing energy resources. Emerge from the lumbar (small of the back) and thoracic (chest area) regions of the spinal cord. 2. Parasympathetic nerves, conserve energy (self-sustaining). Emerge from the brain and sacral (lower back) regions of spinal cord. Most organs receive both innervations. For example, Heart rate is increased by the sympathetic system, and slowed down by the parasympathetic system.
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.

This note was uploaded on 04/04/2012 for the course PSYCH 202 taught by Professor Kim during the Fall '06 term at University of Washington.

Page1 / 6

Chapter 3 - The Anatomy of the Nervous System - A ATOMY OF...

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