The act of breathing in or drawing air into the lungs.
The act of taking air into the lungs.
Act of drawing air into the lungs. Contraction of the diaphragm causes the lungs to expand and air to flow in.
The inhalation of air into the lungs. Inspiration involves contraction of the diaphragm and enlargement of the chest area as the walls of the lungs’ air sacs expand with the intake of air.
Inhalation; drawing air into the lungs; the opposite of expiration. The average rate is 12 to 18 respirations per minute in a normal adult at rest.