In rabbits,inspiration occurs by the contract | vedclass

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(A) During inspiration,the diaphragm and external intercostal muscles contract simultaneously.This contraction increases the volume of the thoracic ca

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External intercostal muscles and muscles of the diaphragm

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(A) During inspiration,the diaphragm and external intercostal muscles contract simultaneously.This contraction increases the volume of the thoracic cavity in the anteroposterior and dorsoventral axes.The diaphragm contraction flattens it,while the external intercostal muscles lift the ribs and sternum,moving the thoracic walls outward and upward.This creates a negative pressure in the lungs,causing air to rush in.

In rabbits,inspiration occurs by the contraction of:

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