Human Respiratory System - Hệ hô hấp và chức năng của nó

What is the main function of the respiratory system?

• To break down food

• To circulate blood

• To exchange gases

• To remove waste

Which gas is essential for respiration?

• Carbon dioxide

• Nitrogen

• Oxygen

• Hydrogen

What is the name of the process where oxygen is used to break down glucose and release energy?

• Photosynthesis

• Digestion

• Circulation

• Respiration

What is the waste product of respiration?

• Oxygen

• Water

• Carbon dioxide

• Glucose

What is the name of the tiny air sacs in the lungs where gas exchange takes place?

• Bronchi

• Trachea

• Alveoli

• Diaphragm

What is the name of the sheet of muscle that separates the chest cavity from the abdomen?

• Bronchi

• Trachea

• Alveoli

• Diaphragm

What happens during inhalation?

• The diaphragm relaxes and the ribcage moves down and inwards.

• The diaphragm contracts and the ribcage moves up and outwards.

• The diaphragm relaxes and the ribcage moves up and outwards.

• The diaphragm contracts and the ribcage moves down and inwards.

What happens during exhalation?

• The diaphragm relaxes and the ribcage moves down and inwards.

• The diaphragm contracts and the ribcage moves up and outwards.

• The diaphragm relaxes and the ribcage moves up and outwards.

• The diaphragm contracts and the ribcage moves down and inwards.

What is the name of the process by which gas exchange occurs in the alveoli?

• Diffusion

• Osmosis

• Active transport

• Filtration

What is the approximate total surface area of all the alveoli in your lungs?

• 0.5 m²

• 5 m²

• 50 m²

• 70 m²