Explanation The chemoreceptors are the sensors for the blood pH, the medulla, pons from the integrating center and the respiratory muscles. The medulla sends out signals to the muscles that initiate inspiration and expiration and regulate non-respiratory air movement like coughing and sneezing. Pulmonary stretch receptors present in the smooth muscles of the airways respond to excessive stretching of the lungs during large inspirations. An increase in pulmonary stretch receptor activity leads to an elevation of heart rate. When the lungs are inflated to their maximum volume of inspiration, the receptors send an action potential signal to the medulla and pons in the brain through the vagus nerve. Breathing control center is developed by neural circuits in the medulla. The breathing control center is responsible for controlling the breathing rhythm...

10th Edition

ISBN: 9780321775658

Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson

Publisher: PEARSON

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Question

Chapter 42.6, Problem 2CC

Summary Introduction

To explain: The reason behind the increased heart rate, following decreased blood pH.

Concept introduction:

Normal blood is pH about 7.4, and falls down due to increased levels of carbon dioxide in the tissues (while doing exercise).

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Chapter 42.6, Problem 1CC

Chapter 42.6, Problem 3CC

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Chapter 42 Solutions

Campbell Biology (10th Edition)

Ch. 42.1 - Prob. 1CC Ch. 42.1 - Three-chambered hearts with incomplete septa were...Ch. 42.1 - Prob. 3CC Ch. 42.2 - Explain why blood has a higher 02 concentration in...Ch. 42.2 - Prob. 2CC Ch. 42.2 - Prob. 3CC Ch. 42.3 - Prob. 1CC Ch. 42.3 - Prob. 2CC Ch. 42.3 - Prob. 3CC Ch. 42.4 - Explain why a physician might order a white cell...

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The reason behind the increased heart rate, following decreased blood pH. Concept introduction: Normal blood is pH about 7.4, and falls down due to increased levels of carbon dioxide in the tissues (while doing exercise).

Solution Summary: The author explains the chemoreceptors are the sensors for the blood pH, medulla and pons, and the respiratory muscles, which regulate non-respiratory air movement.

Concept explainers

To explain: The reason behind the increased heart rate, following decreased blood pH. Concept introduction: Normal blood is pH about 7.4, and falls down due to increased levels of carbon dioxide in the tissues (while doing exercise).

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Chapter 42 Solutions

To explain: The reason behind the increased heart rate, following decreased blood pH.

Concept introduction:

Normal blood is pH about 7.4, and falls down due to increased levels of carbon dioxide in the tissues (while doing exercise).