9A/5B.2 Human Respiratory System

Front

What is the primary function of the alveoli in the human respiratory system?

Back

The primary function of the alveoli is to facilitate gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled from the blood.

Front

What process do cells use to release energy from food using oxygen?

Back

The process is called cellular respiration.

Front

What is the structure that connects the throat to the lungs and is kept open by cartilage rings?

Back

The structure is the trachea.

Front

What are the clusters of tiny air sacs in the lungs called?

Back

They are called alveoli.

Front

What is the main organ of the respiratory system that is made up of spongy, elastic tissue?

Back

The main organ is the lungs.

Front

What is the role of the diaphragm in the respiratory process?

Back

The diaphragm contracts and relaxes to help draw air into the lungs and push it out.

Front

What is the term for the exchange of gases between the alveoli and the blood?

Back

The term is diffusion.

Front

What is the pathway air takes from the nose to the lungs?

Back

Air travels from the nasal cavity to the pharynx, then to the trachea, and finally into the bronchi and lungs.

Front

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

Back

The bronchi are the main passageways that direct air from the trachea into the lungs.

Front

What is the significance of c-shaped cartilage rings in the trachea?

Back

The c-shaped cartilage rings provide structural support to keep the trachea open and prevent it from collapsing.