Human Respiratory System and Cellular Respiration

Front

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

Back

Air enters the body through the nose where it is filtered, moistened, and warmed. Tiny hairs called cilia trap dust and germs.

Front

What connects the nasal cavity to the larynx?

Back

The pharynx (throat) connects the nasal cavity to the larynx (voice box).

Front

What is the role of the larynx?

Back

The larynx helps prevent food from entering the windpipe and is responsible for sound production.

Front

What does the trachea do?

Back

The trachea, or windpipe, carries air from the larynx to the bronchi and is lined with cilia and mucus to trap particles.

Front

What are bronchi and bronchioles?

Back

The trachea divides into two bronchi, each leading to a lung. Inside the lungs, bronchi further divide into smaller tubes called bronchioles.

Front

What is the primary function of the lungs?

Back

The lungs are spongy organs where gas exchange takes place.

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs surrounded by capillaries, where gas exchange occurs.

Front

What is the diaphragm's role in respiration?

Back

The diaphragm is a dome-shaped muscle that contracts to pull air into the lungs and relaxes to push air out.

Front

What is the objective of the gas exchange lesson?

Back

Learn how gas exchange occurs in the alveoli and understand the role of oxygen and carbon dioxide in the process.

Front

How does gas exchange occur in the alveoli?

Back

Oxygen is absorbed into the bloodstream, and carbon dioxide is removed.