Respiratory System Worksheet

The transfer of gases across a membrane or gradient. Oxygen (O2) and carbon dioxide (CO2) are exchanged across the alveoli surface during respiration
The passive transport of a substance from an area of high concentration to an area of lower concentration.
Microscopic air sacs in the lungs where gas exchange occurs with the circulatory system.
A term given to blood when carrying oxygen through the circulatory system and to muscle tissue.
The body system that consists of the heart, blood vessels, and blood that circulates throughout the body. It works to deliver nutrients and other essential materials to cells and removes waste products.
The act of drawing air into the lungs; also referred to as inhalation.
Known more commonly as the throat and provides a pathway for both food and air.
A structure of the respiratory system where speech sounds are produced.
The smallest branches of the airways in the lungs which connect to the alveoli.
Tiny hair-like structures that filter dust and dirt, preventing from entering the nasal passage.