Question

Diaphragm contracts to help in __________, while the contraction of abdominal muscles helps in _________.

• A. inspiration
• B. expiration

Answer 1

Exchange of gases in respiration:

1. Lungs are the respiratory organs of the human body.
2. The ends of bronchioles contain the air sacs which are known as the alveoli.
3. The diaphragm is the most efficient muscle for breathing which is a dome-shaped muscle located at the base of the lungs.
4. The abdominal muscles are the muscles forming the abdominal walls.
5. Diaphragm contracts to help in inspiration while the contraction of abdominal muscles help in forced expiration.

Final answer : Diaphragm contracts to help in inspiration, while the contraction of abdominal muscles helps in expiration.