A Comparison of Nervous Systems

A Comparison of Nervous Systems - The Nervous System We...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
The Nervous System We refer to two components of our nervous system: the sensory-somatic , which regulates voluntary and reflex actions, and the autonomic nervous system in which the brain directs involuntary functions such as peristalsis. The brain is the control center of the body. It weighs about 3 pounds and is composed of approximately 100 billion nerve cells. It is 2% of our body weight, but uses 20% of our body’s energy. Cerebrum – largest part of the human brain; 7/8 of total brain; divided into hemispheres that are joined by the Corpus Callosum which is a bridge of 200 million nerve fibers; folded outer layer is known as the cerebral cortex; it is made of many folds or convolutions that increase surface area; it is important in sensory processing and motor response. It is divided into lobes responsible for various areas of processing: The Occipital Lobe is located in the rear or the brain and is essential for processing visual information The Parietal Lobe interprets
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/12/2010 for the course BSCI BSCI 110B taught by Professor Johnson during the Spring '09 term at Vanderbilt.

Page1 / 2

A Comparison of Nervous Systems - The Nervous System We...

This preview shows document pages 1 - 2. Sign up to view the full document.

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