The Human Heart A journey Through The Human Heart

1. THE HUMAN HEART
A JOURNEY THROUGH THE
HUMAN HEART
Ms.Ranjana Prasad
Assistant professor
Physical Education
Christian Training College
Lucknow

2. THE HEART ITSELF
The human heart
consists of 4 chambers
there are two types of
chambers: the atrium
and the ventricle

3. Anatomy of the heart
• The walls of the heart
are composed of
cardiac muscle, called
myocardium.
• It consists of four
compartments:
– the right and left atria
and ventricles

4. HEART VALVES
The human heart contains valves which
prevent blood from flowing back into the
heart chambers after it has contracted
atrioventricular valves are found between the
atrium and ventricle of each side of the heart
semilunar valves are found in the arteries
leaving the heart to prevent blood from
flowing back into the ventricles

5. HEART AT WORK
Each minute of the
day the heart pumps 5
litres of blood
each time the heart
beats it sends
deoxygenated blood
to the lungs and
oxygenated blood to
the body

6. THE HEART TO THE LUNGS
Blood enters the right
atrium of the heart via
two large veins: the
superior vena cava and
the inferior vena cava
blood exits the right
ventricle of the heart
through the pulmonary
artery to the lungs

7. THE HEART TO THE BODY
Blood re-enters the
left atrium of the
heart via the
pulmonary vein
blood on the left side
of the heart is
oxygenated and is
pumped into the body
by the left ventricle
through the aorta

8. Location of the Heart in the thorax
• The heart is located between the lungs behind
the sternum and above the diaphragm.
• It is surrounded by the pericardium.
• Its size is about that of a fist, and its weight is
about 250-300 g.

9. SOUNDS OF THE HEART
 There are two sounds
associated with the heart,
the lubb and the dubb
 the lubb sound is produced
when the ventricles contract
and the atrioventricular
valves close
 the dubb is produced when
the semilunar valves close,
therefore preventing blood
from flowing back into the
ventricles

10. THANK
YOU