Question

multiple choice question
how do mammals draw air into their lungs?
o posterior air sacs
o buccal pumping
o muscular diaphragm
o gulping

Explanation:

Mammals use a muscular diaphragm. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity. This creates a pressure difference, drawing air into the lungs. Posterior air sacs are more associated with birds. Buccal pumping is used by some fish and amphibians. Gulping is a less - specific and less efficient method compared to the diaphragm - based mechanism in mammals.

Answer:

muscular diaphragm