Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 33, Circulatory and Respiratory Systems - Assessment - 33.3 The Respiratory System - Understand Key Concepts/Think Critically - Page 973: 26


Medulla oblongata

Work Step by Step

The medulla oblongata is a part of the brain called the brainstem and is where the impulses controlling breathing originate. Although we can control our breathing to a great extent, respiration is pretty much involuntary because we do not have to think of when to breathe. The medulla oblongata and certain large blood vessels contain special sensory neurons that detect the amount of carbon dioxide in blood and initiate the breathing reflex.
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