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Diaphragm and Phrenic Nerve: In a Nutshell (Nursing)

by Rhonda Lawes

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    00:00 Alright, so let's wrap up this video series. The diaphragm is a dome-shaped sheet of skeletal muscle. It sits at the base of your chest and separates the abdomen from the chest. The diaphragm contracts and flattens when you inhale. This creates a vacuum effect that pulls air into your lungs. Now when you exhale, the diaphragm relaxes and the air is pushed out of the lungs. The phrenic nerve is the one that controls the diaphragm and it communicates between the brain and the muscle. Now, irritation or damage to the phrenic nerve can impair a person's ability to breathe. Thank you for watching our video today.


    About the Lecture

    The lecture Diaphragm and Phrenic Nerve: In a Nutshell (Nursing) by Rhonda Lawes is from the course Review: Anatomy and Physiology of the Respiratory System (Nursing).


    Included Quiz Questions

    1. Diaphragm
    2. Phrenic nerve
    3. Liver
    4. Aorta
    1. Air is pushed out of the lungs.
    2. A vacuum effect sucks air into the lungs.
    3. There is an increase in positive pressure within the thoracic cavity.
    4. There is an increase in negative pressure within the thoracic cavity.

    Author of lecture Diaphragm and Phrenic Nerve: In a Nutshell (Nursing)

     Rhonda Lawes

    Rhonda Lawes


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