Name: What is Asthma?
Uploaded: 2019-07-19
Duration: 1 min 45 s
Description: Asthma is a condition in which a person's airways become inflamed, narrow and swollen which makes it difficult to breathe. Know more about it in this video.

Question

Crossword puzzle

Across ( $\to$ ):

1. Lungs are protected by it.

2. It is present at the entrance of the trachea.

Down (↓):

3. It is a common passage for air and food.

4. Air enters the body through it.

Accepted Answer

Across:

1. Lungs are protected by the rib cage. Lungs are the spongy, bag-like elastic organs. They rest on the diaphragm.

2. Larynx is present at the entrance of the trachea. Larynx has two ligament folds called vocal cords. They vibrate and produce sound when air passes through it.

Down:

3. Pharynx is the common passage for air and food. Air from the nasal cavity enters the pharynx and reaches the trachea.

4. Nose is the part that allows air to enter the body. Nose has two openings called nostrils which leads to the nasal cavity. Nasal cavities are lined with tiny hair and mucus to prevent the entry of dust and germs.

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Dhiren M Doshi Biology Solutions for Exercise - Dhiren M Doshi Solutions for Chapter: Respiratory System, Exercise 8: CROSSWORD PUZZLE

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