Question

please give 3-4 points about External Respiration (Breathing).

Answer 1

1. the process of taking air into and expelling it from the lungs."his breathing was shallow"2. a sign in Greek (῾ or ᾿) indicating the presence of an aspirate rough breathing or the absence of an aspirate smooth breathing at the beginning of a word.
3. The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction and then exhaled due to muscle relaxation.