Question

name two muscle that help in breathing.briefly describe how the this muscles help in the inspiration of air.

Answer 1

When you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your chest cavity, into which your lungs expand. The intercostal musclesbetween your ribs alsohelp enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.

Answer 2

The muscles of respiration are those muscles that contribute to inhalation and exhalation, by aiding in the expansion and contraction of the thoracic cavity. The diaphragm and, to a lesser extent, the intercostal muscles drive respiration during quiet breathing.