Circulatory and Respiratory System
1. Circulatory System – made up of three parts, the heart, blood vessels, and the blood.
2. Blood – a tissue that is made of liquid, cell parts, and two types of cells. Approximately 5 liters
in the body.
3. Plasma – a liquid that makes up 55% of blood.
4. Platelets – cell fragments that help repair blood vessels that are solids that include blood cells
and cell parts that make up 45% of blood.
5. Red Blood Cells (RBC’s) – Carry oxygen and carbon dioxide through the body.
6. Hemoglobin – protein in red blood cells that carry gases, oxygen and carbon dioxide attach to
7. White Blood Cells (WBC’s) – cells that fight infection and protect the body from foreign
8. Arteries – blood vessels that carry blood away from the heart.
9. Veins – blood vessels that carry blood back to the heart.
Capillaries – microscopic blood vessels that link arteries to veins.
Respiratory System – body system that brings oxygen into the body and removes carbon
dioxide from the body.
Pharynx – air passes into the mouth and nose through the pharynx to the larynx and
Bronchi – the trachea branches into two tubes called bronchi.
Lungs – large sponge like organs in which oxygen and carbon dioxide are passed between
the blood and the environment.