Diaphragm contraction is a crucial process in respiration, where the diaphragm muscle contracts to increase thoracic cavity volume, allowing air to flow into the lungs. This contraction is primarily controlled by the phrenic nerve, and its effectiveness is vital for efficient breathing and oxygen exchange in the body.

Diaphragm Contraction

Process in respiration

Diaphragm muscle

Thoracic Cavity Volume

Air flow into the lungs

The phrenic nerve is a crucial component of the human nervous system, responsible for providing motor innervation to the diaphragm, thus playing a vital role in the process of breathing. Originating from the cervical spinal cord (C3-C5), it also carries sensory information from the central part of the diaphragm and the pleura of the lungs.

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