Function of Various Parts of the Respiratory System in Gaseous Exchange

Question 1

Function of External nostrils

Answer 1

Hair and mucus in both nostrils helps to trap foreign particles

Question 2

Function of Pharynx (throat)

Answer 2

The passageway leading from the mouth and nose to the larynx (and oesophagus)

Question 3

Function of Larynx

Answer 3

• Channels air into the trachea
• Also a muscular organ where vocal chords that produces sounds and speeches are held

Question 4

Function of Trachea and Bronchi

Answer 4

• Trachea carries air to the Bronchi and the bronchi carries air to the bronchioles
• Both are lined with cilia and mucus secreting gland which helps to clean the air before it enters the lungs

Question 5

Function of alveoli

Answer 5

• Tiny air sacs in the lungs
• They facilitates efficient gaseous exchange of carbon dioxide and oxygen between the lungs and the bloodstream

Question 6

Function of Bronchioles

Answer 6

• Very fine tubes that branched out from the bronchus
• Each bronchiole channels air into a cluster of alveoli