Explanation The inspiratory and expiratory neurons are located in the medulla oblongata, which acts as a respiratory center in the brain. The nerve impulses from the respiratory center travel to the diaphragm through the left and right phrenic nerves. The diaphragm acts as a major inspiratory muscle, which is innervated by the phrenic nerve...

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Question

Chapter 22, Problem 1WWTS

Summary Introduction

Introduction:

The lungs are conical shaped in the thorax that is primarily involved in breathing. Breathing is a process which involves the consumption of oxygen (O₂) by the tissues and the release of carbon dioxide (CO₂) from the tissues. Breathing alternates two phases - inspiration and expiration. Inspiration is called as breathing in and expiration is breathing out. The phrenic nerve is a nerve that originates from the neck and descends through the thorax to reach the diaphragm. This nerve has a key role in breathing.

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ANATOMY & PHYS VOL 2(CH 18-29) >CUSTOM<

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Solution Summary: The author explains that the phrenic nerve is a nerve that originates from the neck and descends through thorax to reach the diaphragm.

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