Functions of the Respiratory System

The video tutorial explains the process of respiration, linking it to energy needs during physical activity. It covers the respiratory system's anatomy, including the nose, trachea, lungs, diaphragm, bronchioles, and alveoli. The video demonstrates how the diaphragm aids in breathing and includes an experiment to illustrate this. It also explains how fish breathe using gills to extract oxygen from water.

What happens to your breathing when you run fast?

• It remains the same.

• It slows down.

• It stops.

• It speeds up.

What is the primary function of the respiratory system?

• To digest food.

• To produce energy.

• To circulate blood.

• To exchange gases.

Which part of the respiratory system is known as the windpipe?

• Lungs

• Diaphragm

• Nose

• Trachea

How do the lungs function similarly to sponges?

• They expand and contract.

• They absorb water.

• They filter dust.

• They produce sound.

What is the role of the diaphragm in breathing?

• It filters air.

• It digests food.

• It supports the lungs.

• It circulates blood.

How many bronchioles are there in the lungs?

• 10,000

• 20,000

• 30,000

• 60,000

What is the function of alveoli in the respiratory system?

• To circulate blood.

• To filter dust.

• To exchange gases.

• To produce energy.

What happens when the diaphragm goes down?

• The lungs contract.

• The lungs stop functioning.

• Air goes into the lungs.

• Air goes out of the lungs.

How do fish obtain oxygen?

• Through their lungs.

• By coming to the surface.

• Through their gills.

• By absorbing it through their skin.

Which part of the respiratory system is not present in fish?

• Gills

• Lungs

• Trachea

• Bronchioles