Match the following:
AB1.Hairs and mucus in nostrilsa. assists in inhalation and exhalation2.Cartilage in tracheab. increases surface area of absorption3.Alveolic.prevents entry of foreign bodies4.Diaphragmd.prevents collapse of tracheal structure
1 - c, 2 - d , 3 - b , 4 - a
1. Hairs and mucus in nostrils prevent the entry of foreign bodies.
2. Cartilage in trachea prevents collapse of tracheal structure.
3. Alveoli increases the surface area of absorption.
4. Diaphragm assists in inhalation and exhalation.