1. Circulatory System
Objective 1-2

2. Components Heart Blood Blood Vessels
Primary organ that pushes blood through the entire body
Blood
This nutrient rich liquid has everything your cells need to survive
It also collects the waste your cells produce
Blood Vessels
Roads through the body that carry the blood to every single cell
Arteries
These super highways carry the blood AWAY from the heart
Capillaries
These small streets deliver the nutrients to the cells
Veins
These super highways carry the blood TOWARD the heart

3. Heart Superior Vena Cava Aorta Pulmonary Arteries Pulmonary Veins
Large vein that brings oxygen-poor blood from the upper part of the body to the right atrium
Aorta
Brings oxygen-rich blood from the left ventricle to the rest of the body
Pulmonary Arteries
Bring oxygen-poor blood to the lungs
Pulmonary Veins
Bring oxygen-rich blood from each of the lungs to the left atrium
Left Atrium
Pulmonary Valve
Prevents blood from flowing back into the right ventricle after it has entered the pulmonary artery
Aortic Valve
Prevents blood from flowing back into the left ventricle after it has entered the aorta
Right Atrium
Mitral Valve
Prevents blood from flowing back into the left atrium after it has entered the left ventricle
Tricuspid Valve
Prevents blood from flowing back into the right atrium after it has entered the right ventricle
Left Ventricle
Inferior Vena Cava
Vein that brings oxygen-poor blood from the lower part of the body to the right atrium
Septum
Right Ventricle

4. Blood Blood is 45% cells and 55% plasma Blood Cells: Blood Plasma:
Red Blood Cells: carry oxygen
White Blood Cells: fight disease
Platelets: stop bleeding by scabbing
Blood Plasma:
90% water
10% nutrients and hormones

5. Blood Vessels
Artery
Vein
Capillary
Blood Pressure is the force the heart puts on your arteries
Healthy is 120/80