Question

give reason 1. fine hairs and mucus are present in nasal passage. 2. Rings of cartilage are present in the throat​

Answer 1

Answer:

fine hair and mucus are present in nasal cavity to let not to enter dirt particles inside the nasal cavity

Answer 2

Answer:

1. fine hairs and mucus present in the nasal passage helps in filtering the air entering the lungs. Fine hairs trap the dust molecules in it . Mucus helps in maintaining the constant temperature of the air . Mucus moistens the air entering he lungs.

2. Cartilage refers of flexible bones. Rings of  cartilage are present in throat in order to protect our wind pipe . Cartilage avoids the collapsing of wind pipe