The Circulatory System
By: Madison Reeder 6th Period 3/12/15
Components of the Circulatory System:
There are three components of the Circulatory System. They are the blood, the heart, and the blood vessels. The blood is a connective tissue made of plasma and cells. The heart is a muscular pump to move blood. And then the blood vessels which include the veins, arteries, capillaries that deliver blood to all parts of the body.
Connective tissue made of plasma and cells.
Muscular pump to move blood.
Veins, arteries, capillaries that deliver blood to all parts of the body.
- Arteries- Carry oxygen-rich blood FROM HEART to the body.
- Veins- Carry oxygen-poor blood FROM ORGANS & TISSUES to the heart.
- Capillaries- Microscopic blood vessels located between arteries and venules.
- Carry blood AWAY from the heart.
- Arterioles- smallest arteries.
- Have thick, strong, elastic walls.
- Carry oxygen-rich blood to ALL body cells.
- Carry blood TO the heart.
- Have thin, elastic walls with valves.
- Valves help return blood to the heart.
- Venules- smallest veins.
- Carry oxygen-poor blood back to the heart.
- Connect arteries and veins.
- Walls are ONE CELL LAYER THICK.
- Surround EVERY cell in the body.
- Site of GAS exchange.
- Occurs between the thin walls of the alveoli and thin walls of the capillaries.
- Capillaries make up most of the vessels inside the human body.
- Blood vessels, heart, lungs all work together to being oxygen to body cells and remove carbon dioxide from the cells.
Circulatory System Bill Nye on the Heart (Part 1)