Circulatory system for elementary level

Intro to the basics of the circulatory system. Grades 2-5

1. Circulatory System: Our Blood & Heart

2. Circulatory System This system is one of the most important in the body. It is made up of 3 main parts : The heart The lungs The blood vessels This system is also known as the cardiovascular system.

3. 1. The heart pumps blood to the lungs 2. The lungs remove the carbon dioxide from the blood and refill it with oxygen . Heart Lungs Heart Body Blood pumping

4. 3. The heart then pumps the blood around the body. 4. The cycle starts again Heart Lungs Heart Body Blood pumping

5. Watch Me: Stop @ 5:15 Blood Vessels Arteries : are thick blood vessels FEEL YOUR PLUSE! Veins: are thick blood vessels. When you get shots your doctor has to find your veins. Capillaries: are thin blood vessels , t hey are small to allow them to reach every cell in the body.

6. What I s Blood? Blood is the fluid that keeps our bodies going. It carries oxygen and other chemicals to where they are needed in the body. 95 % of all blood cells are produced in the bone marrow.

7. Our Blood: Copy These Definitions Red blood cells: carry oxygen throughout the body White blood cells : which fight and protect us from getting sick Platelets , which are cells that help you stop bleeding if you get a cut Plasma , a yellowish liquid that carries nutrients, hormones, and proteins throughout the body NOW LET’S MAKE BLOOD!

8. Our Blood