Components of Respiratory System in Humans

Q.

Explain lime water experiment.

Q. How many lungs do humans have?

1. 1
2. 3
3. 2
4. 4

Q. Name the part in the human respiratory system where air is filtered by hair and mucus.

1. Mouth
2. Nostril
3. Diaphragm
4. Larynx

Q.

The trachea is a tube which is also called _______.

Q. Exhaled air has more percentage of carbon dioxide than inhaled air.

1. False
2. True

Q.

Why is Tobacco harmful to the body?

Q.

The opening through which air enters our body is called ___

Q.

How does tobacco affects lungs?

Q.

Name two diseases caused by tobacco smoking.

Q. During inhalation, the diaphragm becomes and ribs move .

1. downwards
2. concave
3. upwards
4. flat

Q. What is breathing rate? What is normal breathing rate in adults?

Q. During an injury, if nasal septum gets damaged, which cartilage is perfused for its recovery?

1. Hyaline cartilage
2. Elastic cartilage
3. Calcified cartilage
4. Fibro cartilage

Q.

In Delhi, screens are put up across the city showing PM 2.5 levels as being dangerous. Particulate Matter (PM) are small dust and soot particles that come out from car exhausts. These particles are only 0.0025 millimeters thick which is thinner than the human hair!

Why do you think these particles are dangerous to our body?

1. PM 2.5 particles are large enough to block the nose.

2. PM 2.5 particles are so small that they are not trapped in the nose and will enter the lungs.

3. PM 2.5 particles are small enough to cause infection.

4. None of the Above.

Q. Name the body structure concerned with the given functional activity.
Helps to increase the volume of the chest cavity lengthwise.

Q. A person sleeping under a tree at night feels when he wakes up in the morning as trees release more during night.

1. energised
2. lethargic
3. normal
4. carbon dioxide
5. oxygen
6. nitrogen

Q. Select the word which means the opposite of the given word:
Recline

1. Unrest
2. Rest
3. Decline
4. Sleep

Q. Fill in the blank on a similar pattern.
Diaphragm and _______.

Q. The most important function of diaphragm of the mammals is?

1. To divide the body cavity into compartment
2. To protect lungs
3. To aid in respiration
4. To aid in ventilation

Q. what is the difference between superior vena cava an inferior vena cava?

Q.

A person sleeping under the tree during night feels lethargic when he wakes up in the morning. What could be the possible reason?

1. He has inhaled excess carbon dioxide given out by trees.

2. He has inhaled excess oxygen given out by trees.

3. He has produced more lactic acid because it was cold outside.

4. He has exhaled more oxygen than he should have.

Q. Why is it more effective to breathe through the nose compared to the mouth?

Q. Why is it more effective to breathe through the nose compared to the mouth?