Circulatory/R espiratory System

What makes up the circulatory system? Heart Blood Blood Vessels Function: Transportation system by which oxygen and nutrients reach the body’s cells, and waste materials away are carried away

The heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system.

The Heart An organ made of cardiac muscle Size of your fist and in the center of your chest Valves are located between the artia and ventricles and these valves close to prevent backflow. “LUB DUB” sound Right side  pumps deoxygenated blood to the lungs Left Side  Pumps oxygenated blood to the body

Blood Vessels Hollow tubes that circulate your blood all throughout your body - Arteries - Veins - Capillaries

Arteries Carry blood AWAY from the heart Main artery called the aorta Aorta divides and branches Many smaller arteries Each region of your body has systems of arteries supplying it with fresh, oxygen-rich blood

Arteries Have a strong, muscular walls, and are very thick The inner layer is very smooth so that blood can flow easily.

Capillaries Allows food and oxygen to be released to the body cells Carbon dioxide and other waster products returned to the bloodstream It is where exchanges occur

Capillaries Very Thin Only one cell thick Connect arteries & veins

Arteries  Capillaries  Veins

Veins Carry blood to the heart Receive blood from the capillaries Transport waste-rich/oxygen-poor blood back to the lungs and heart Valves are located inside the veins to allow blood to move in one direction

Veins are a medium thickness Valves are located inside the veins The valves only allow blood to move in one direction

Blood Blood vessels are made up of plasma, red blood cells, platelets, and white blood cells Function: Carries oxygen and nutrients to all parts of your body.

Plasma Yellowish liquid Transport nutrients and blood cells Made is made in the liver

Red Blood Cells Transport oxygen throughout the body (O2) Makes blood red

White Blood Cells Protects the body against germs and foreign invaders Attacks and destroys germs that enter germs

Platelets Blood cells that help spot bleeding by forming clots and scabs