The circulatory system transports materials around the body via blood vessels and the heart. It functions to deliver oxygen and nutrients to cells while removing carbon dioxide and waste. The major components include the heart, which continuously pumps blood through the network of arteries and veins, and blood, which fills the circulatory system. The circulatory system also includes specific arteries and veins that transport blood to and from the lungs, brain, kidneys, and intestines. Accessory organs like the lungs, kidneys, and intestines also play important roles in gas exchange, waste removal, digestion, and water absorption.

1. Done By :
Ajay Nagisetti
PG DRIT

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

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

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

11. The left atrium receives blood from the pulmonary vein.

12. Blood passes through the mitral valve into the left ventricle.

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

15. The right atrium receives the deoxygenated blood.

16. Blood then enters the right ventricle through the
tricuspid valve.

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