The document summarizes the human circulatory system. It has three main parts: blood vessels, heart, and blood. The heart pumps blood through arteries and veins to circulate oxygen and nutrients to tissues through networks of capillaries. It then returns deoxygenated blood back to the heart. The circulatory system allows for the transportation of substances around the body through continuous circulation facilitated by the heart's regular pumping action.

1. Circulation of Blood

2. Transportation
 Our body is like a map on a big
road. In that there are many
small, big roads or transports.
These takes you towards the
important parts of your body.
Leads us towards important
places.

3. Human Circulatory system has 3 main parts.
• Blood Vessels – Kind of tubes through which blood flows.
• Heart – To purify blood and pump it into body.
• Blood– Transportation of Food constituents, oxygen and waste
material

7. Arteries
• Vessels which carry blood from heart to the different parts of
the body.
• They have smaller diameter.
• yaamaQyao JaDpaa nasataata.
• Blood pressure is approximately 100 m Hg

8. Blood vessels
• Through skin like
tunnel the network of
the vessels is spread all
over the body.

9. Veins
• Vessels which carry blood from all parts of
the body towards heart.
• Diameter is more.
• yaamaQyao JaDpaa Asataata.
• Blood pressure is approximately 2mm Hg.

10. Capillaries
• These are very fine blood vessels with thin
wall .
• They join arteries and veins.
• Their network is spread all over the body.
• Function: They facilitate the exchange of
substances , oxygen and carbon dioxide
between them and cells.

11. Heart
• Heart is divided into 4 parts.
• Upper part: Right artria
Left artria
• Lower Part : Right ventricle
Left ventricle

13. Lab
Heart sounds are the
noises generated by the
beating heart.
Lab- When the blood in
the heart is pushed in the
body.
Dab – When the blood
from the body is pumped
into heart
Dab

14. Blood circulation in humans
Deoxygenated blood enters the
right atria and from there it enters
the right ventricle. Afterwards it is
passed on to the lungs through
lungs artery for purification. After
that it moves back to left atria and
then to the left ventricle. From
there the oxygen rich blood is
circulated to all the parts of the
body.

15. • Heart beats
are
measured
using
stethoscope.
Average Heart Rate of some Mammals
28
200
50 30
9
70
40
376
0
50
100
150
200
250
300
350
400
camel cat cow elephant grey
whale
human lion mouse
Mammals
Heartbeatsperminute

16. Heart Facts
• Hold out your hand and make a fist. If you're a kid, your
heart is about the same size as your fist, and if you're an
adult, it's about the same size as two fists.
• Your heart beats about 100,000 times in one day and
about 35 million times in a year. During an average
lifetime, the human heart will beat more than 2.5 billion
times.
• Give a tennis ball a good, hard squeeze. You're using
about the same amount of force your heart uses to
pump blood out to the body. Even at rest, the muscles of
the heart work hard--twice as hard as the leg muscles of
a person sprinting.

17. What are the blood constituents?
• Plasma:
- The liquid part of the blood contains 90 % water, 7
% protiens and 3 % iron.

18. •Blood cells
– They carry oxygen to all parts
of the body

20. • White blood
corpuscles
• protects our body
from attack of
bacterias

21. Platelets:
– Creates blood clots
– Helps in
freezing/clotting
bleeding blood.

22. Blood groups
There are 4 types of blood
groups in humans
A blood group
B blood group
AB blood group
O blood group