Human Respiratory System

Front

lungs

Back

Organs responsible for gas exchange, taking in oxygen and expelling carbon dioxide.

Front

larynx

Back

Also known as the voice box, it is involved in breathing, producing sound, and protecting the trachea against food aspiration.

Front

Trachea (windpipe)

Back

The trachea, also known as the windpipe, is a tube that connects the larynx to the bronchi, allowing air to pass to the lungs.

Front

Bronchioles

Back

Bronchioles are the smaller branches of the bronchi that lead to the alveoli in the lungs, where gas exchange occurs.

Front

alveoli

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

diaphragm

Back

A muscle that helps with breathing by contracting and relaxing.

Front

Oxygen

Back

Oxygen is a gas that enters the blood through the alveoli in the lungs.

Front

Carbon Dioxide

Back

Carbon dioxide is a gas that exits the blood through the alveoli in the lungs.

Front

Respiration

Back

The process of inhaling oxygen and exhaling carbon dioxide.

Front

Nasal Cavity

Back

The space inside the nose where air is warmed and filtered.