mention the functions of the following human respiratory system.
a. alveoli
b. nasal hair
c. diaphragm
Answers
Answer:
Diaphragm It is a muscular partition between the thoracic and abdominal region in our body. Movement of diaphragm helps in the breathing process.
Alveoli These are balloon-like structures, which increases the surface area for the gaseous exchange in lungs.
Answer:
a) Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
b) Nose hair is a natural part of the human body that serves as a defense system. Nasal hair keeps harmful debris out of the body system and maintains moisture in the air we breathe. Blood vessels in the nose and face are extra dense.
C) The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.
Explanation: