The Importance of Breathing and the Respiratory System

The video explains the importance of breathing for oxygen intake and waste removal. It describes the respiratory system, including the trachea, bronchial tubes, lungs, alveoli, and capillaries. The process of inhalation and exhalation is detailed, highlighting the role of the diaphragm and chest movement in facilitating air flow.

Why do humans need to breathe frequently?

• To digest food

• To circulate blood

• To supply oxygen and remove waste gases

• To maintain body temperature

What is the function of the trachea in the respiratory system?

• To filter blood

• To transport air to the lungs

• To digest food

• To pump oxygen into the bloodstream

What are alveoli?

• Tiny balloon-like structures in the lungs

• Cells that produce oxygen

• Muscles that help in breathing

• Tubes that carry air to the lungs

How does the diaphragm contribute to breathing?

• It filters air entering the lungs

• It pumps blood through the body

• It helps move air into and out of the lungs

• It stores oxygen for later use

What happens when you exhale?

• Carbon dioxide and water vapor are expelled

• Oxygen is absorbed into the bloodstream

• Nutrients are absorbed

• Blood is filtered