2. It is how good and bad materials travel
through our bodies.
Definition
3. Function
Transport materials needed by cells
• Oxygen
• Glucose
Remove waste materials from cells
• Carbon dioxide
• urea
4. Major Components
Pump (heart)
• Continuously circulates blood
Network of tubes
• Arteries- blood away from heart
• Veins- blood back to the heart
Blood
• Fluid that fills the circulatory system
5. Specific Parts
Pulmonary arteries- transport blood to lungs
Pulmonary veins- transport oxygenated blood to heart
Aortic arch and trunk- main arteries from heart
Common carotid artery- carries blood to brain
Renal vein and artery- connects to kidneys
Mesenteric veins- connects to intestine
6. Accessory Organs
Lungs- Organ where oxygen is taken up and CO2 is
released
Kidneys- organ where wastes are removed from blood;
critical in regulating fluids in the body
Small intestine- digestion
Large intestine- water absorption
7.
8. The Heart
The human heart has four chambers
• Left and right ventricle
• Left and right atrium
The left side of the heart pumps oxygenated blood to
the body while the right side of the heart pumps
deoxygenated blood to the lungs where oxygen can be
absorbed by the hemoglobin carrying red blood cells
9.
10. After passing through the capillaries of the lungs, the
blood which is now oxygenated returns to the heart in
the pulmonary veins.
From Lungs
13. Contraction of the left ventricle pushes blood through the aortic
semilunar valve into the aorta. Blood travels to all regions of the
body where it feeds cells with oxygen picked up from the lungs
and nutrients from the digestive tract.
Rest of Body
14. Deoxygenated blood returns from the rest of the body
through the superior and inferior vena cava.
SVC/IVC
17. Contraction of the right ventricle pushes blood through
the pulmonary semilunar valve into the pulmonary
arteries in which it travels to the lungs.
To Lungs
18. Blood pressure is a measure of the force exerted by
the blood on the wall of the arteries.
An example is 120/80 (systolic pressure/diastolic
pressure.
• Systolic pressure is the result of the contraction of
the ventricles (normal 110-140)
• Diastolic pressure is during the ventricular
relaxation (normal 70-90)
Blood Pressure