The document discusses the structure and function of the heart. It describes that the heart has four chambers - right atrium, left atrium, right ventricle, and left ventricle. The myocardium is the heart's muscular wall that contracts and relaxes to pump blood through the body. The heart pumps about 7 liters of blood per minute.
1 of 16
Download to read offline
More Related Content
Circulatory System
7. You will realize this
month is June and
it is half of 2018
Ohhh gosssh
Nakaka
excite!!!!!!
9. Myocardium
-is the heart’s muscular wall
-it contracts and relaxes causing
the heart beat.
Contracts 60-80 times per minute
-The amount of blood that is pumped is
about 130 mL of blood
-every beat makes 7 liters per minute
10. The heart’s
interior shows
the left side and
the right side
that are
separated by a
thick muscular
wall. This wall is
called septum.
11. The heart has four chambers namely:
Right Atrium Left Atrium
Right Ventricle Left Ventricle
12. The atria (plural of atrium)
are smaller wall with
thinner walls
The ventricles are
bigger with thicker
walls
The atria holds the
blood before it goes
down to the ventricle
13. The right ventricle
pumps to the lungs
The left ventricle
pumps the blood to
all the parts of
the body
AORTA
LUNGS
14. The valves that are found between the atria and
ventricles with the blood vessels attached to them
prevent blood from flowing backwards
Tricuspid
Valve
Bicuspid
Valve
Aorticsemilunar
valve
Pulmonary semilunar
valve