Question

The diagram shows part of the human gas exchange system.
What are W, X, Y and Z?
A. (a)
B. (b)
C. (c)
D. (d)

Answer 1

Answer:

The part which is named as W is Larynx, X is Trachea, Y is Bronchi and Z is bronchioles.

Explanation:

We are given with a diagram which is of human gas exchange system and the diagram is not marked, it is named as W, X, Y and Z and we have to tell what are those in the diagram.

Human gas exchange system is known as respiratory system.

• What is human respiratory system? the respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.
• During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
• The part which is named as W is Larynx, X is Trachea, Y is Bronchi and Z is bronchioles.
• Larynx (voice box) is present at the opening of trachea. Then the air goes into trachea-passage for air to lungs. Near the entry of trachea into lungs, it gets divided into bronchi (sing. bronchus) which further gets divided into bronchioles.

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