Circulatory system

This ppt. is as per ICSE X syllabus. Covering all topics of circulatory system. It meets the CBSE requirements too.

1. Circulatory System
Function and Parts

2. Definition
It is a fluid-filled network of tubes (or vessels)
through which materials move between the
environment and the cells of a multicellular
animal.

3. Characteristics
It connects all parts of an organism in a way
that allows individual cells to thrive as well as
for organisms to function as a unit
It is an entirely closed system

4. Function
Transport materials needed by cells
Oxygen
Glucose
Remove waste materials from cells
Carbon dioxide
urea

5. 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

6. Accessory Organs
Lungs-organ where oxygen is taken up and CO
2is
released
Kidneys-organ where wastes are removed from
blood; critical in regulating fluids in the body
Small intestine-digestion
Large intestine-water absorption

7. BLOOD
1. PLASMA-55-60% OF BLOOD
2. CELLULAR COMPONENTS-40-45%
RED BLOOD CELLS –ERYTHROCYTES
WHITE BLOOD CELLS-LEUKOCYTES
PLATELETS-THROMBOCYTES

8. PLASMA
ALKALINE LIQUID
PALE COLORED
INORGANIC SALTS(1%)
GLUCOSE ,AMINO ACIDS
FIBRINOGEN,HORMONES(7-8%)
90-92% WATER

9. RED BLOOD CELLS
No nucleus
120 days life
More room for haemoglobin
Biconcave in shape
size about 7 micron

11. WHITE BLOOD CELLS

14. PLATELETS & CLOTTING

16. HUMAN BLOOD GROUPS

17. ABO BLOOD GROUP SYSTEM

21. Rh factor

24. 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

27. Specific parts
Pulmonary arteries-transport blood to lungs
Pulmonary veins-transport oxygenated blood to hear
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

30. Deoxygenated blood returns from the rest of the body through the superior and inferior
vena cava.

31. The right atrium receives the deoxygenated blood.

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

33. To lungs
Contraction of the right ventricle pushes blood through the pulmonary semilunar valve into
the pulmonary arteries in which it travels to the lungs.

34. From lungs
After passing through the capillaries of the lungs, the blood which is now
oxygenated returns to the heart in the pulmonary veins.

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

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

37. To rest of
body
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.

39. DOUBLE CIRCULATION
PULMONARY
CIRCULATION-Heart to the
lungs and back to the heart.
SYSTEMIC CIRCULATION-
heart to body parts and back
to the heart

40. Heart beat
Pulse
Cardiac cycle-systole & diastole
Hepatic portal system
Lymph & lymphatic system
Tissue fluid

41. PORTAL SYSTEM

42. Blood Pressure
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 ventricle relaxation (normal 70-90)

43. Thank you and happy
learning. Stay safe all
of you.
--Dr. Gurminder
Rawal