Question

Given below is the picture of the internal structure of lungs. Label parts 1-4

Answer 1

Lungs:

1. Lungs are present in the thoracic cavity and are responsible for respiration in humans.
2. They also have a significant role in the protection of the body against infection from pathogens.

Label 1: Artery

1. Arteries are a type of blood vessel.
2. These are responsible for carrying and delivering blood rich in oxygen to different cells and tissues of the body.

Label 2: Bronchi

1. Bronchi are the main respiratory airways found in the lungs.
2. They are responsible for the conduction and cleaning of the air present in the respiratory pathway.

Label 3: Bronchiole

1. Bronchioles are the smallest airways present in the lungs.
2. It is directly linked to the alveoli.
3. Bronchioles functions in the air conduction and gaseous exchange in the lungs.

Label 4: Alveoli

1. Alveoli are cup-shaped structures that provide the site of gaseous exchange between the lungs and the blood.

Final answer: