Mechanism of Breathing
Trending Questions
What is the main function of lungs in a human body?
During exhalation, the ribs move ________.
How does surface area of membrane affect the rate of diffusion in lungs?
Lungs of our body are protected by a cage-like structure called as
Mark the following statements as True or False. Insects have spiracles on the lower surface of the body.
- True
- False
- trachea
- larynx
- diaphragm
- lungs
- Pharynx, larynx, trachea, bronchioles
- Larynx, pharynx, trachea bronchioles
- Pharynx, larynx, bronchioles, trachea
- Pharynx, trachea, larynx, bronchioles
- Ribs
- Diaphragm
- Abdomen
The part of our body that protects the vital organs in our upper body and moves forward and outward during inhalation is ______.
rib cage
chest cavity
diaphragm
bronchioles
The sac-like structures at the end of the bronchioles are called _____
- Alveolus
- Alveoli
Bronchii
Bronchioles
- bronchi
- alveoli
- capillaries
- alveoli
- trachea
- diffusion
- breathing
Our lungs lie in the chest cavity, which is bound by the rib cage and diaphragm.
- True
- False
Given below is the picture of the internal structure of lungs. Label parts 1-4
Identify the components a, b, and c. Choose the option that correctly matches the parts shown in the image.
a-Nasal cavity, b- lungs, c- diaphragm
a-Nasal cavity, b- diaphragm, c- lungs
a-Nasal cavity, b- rib muscles, c- lungs
a-pharynx cavity, b- diaphragm, c- lungs
The transfer of oxygen between air in the lungs and blood vessels takes place at the
Pharynx
Diaphragm
Trachea
Alveoli
- up
- down
- right
- left
1. Size of the chest cavity increases.
2. Size of the chest cavity reduces.
3. Diaphragm moves upwards.
4. Diaphragm moves downwards.
- 1 and 4
- 1 and 3
- 2 and 3
- 2 and 4
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?
PM 2.5 particles are large enough to block the nose.
PM 2.5 particles are so small that they are not trapped in the nose and will enter the lungs.
PM 2.5 particles are small enough to cause infection.
None of the Above.
- True
- False
- Allows oxygen from the air to enter the blood and carbon dioxide to leave the blood and enter the air.
- Can alter the pH by changing oxygen levels
- Provides protection against some microorganisms by preventing their entry into the body and by removing them from respiratory surfaces.
- Allows for speech and sound generation.
- trachea
- stomach
- intestines
- mouth
- Oxygen
- Nitrogen
- Carbon dioxide
- Hydrogen
- kidney
- liver
- buccal cavity
- diaphragm
- trachea
- bronchi
- oesophagus
- bronchioles
- nasal hair
- mucus
- trachea
- larynx
- I'm in your respiratory tract
- I have many branches
- Your trachea leads to me
- Larynx
- Pharynx
- Alveoli
- Bronchi