Download The Heart

THE HEART
RECAP
What are the major functions of the circulatory
system?
 What are the major parts of the circulatory
system?
 What is the function of the heart?

aorta
superior
vena cava
pulmonary
artery
right
atrium
left
atrium
right
ventricle
left
ventricle
inferior
vena cava
septum
OXYGENATED OR DEOXYGENATED?
Blood passing through the aorta
 Blood entering the right atrium
 Blood entering the left ventricle
 Blood passing through the pulmonary vein
 Blood passing through the inferior vena cava
 Blood entering the right ventricle
 Blood passing through the pulmonary artery
 Blood entering the left atrium

PULMONARY CIRCULATION
Exchange of oxygen and carbon dioxide takes place.
Blood is pushed into the pulmonary arteries and
into the left and right lungs.
Deoxygenated blood flows into the right ventricle of
the heart.
Deoxygenated blood enters the right atrium of the
heart.
Oxygenated blood from the lungs flows to the left
atrium of the heart.
PULMONARY CIRCULATION
Deoxygenated blood enters the right atrium of the
heart.
Deoxygenated blood flows into the right ventricle of
the heart.
Blood is pushed into the pulmonary arteries and
into the left and right lungs.
Exchange of oxygen and carbon dioxide takes place.
Oxygenated blood from the lungs flows to the left
atrium of the heart.
SYSTEMIC CIRCULATION
Deoxygenated blood enters into the vena cavae.
From the left ventricle, oxygenated blood is pushed
to the largest artery known as the aorta.
The blood goes back to the heart through the right
atrium. Then, the blood is pushed into the right
ventricle going to the lungs.
Exchange of gases take place as oxygenated blood
passes through the different organs.
SYSTEMIC CIRCULATION
From the left ventricle, oxygenated blood is pushed
to the largest artery known as the aorta.
Exchange of gases take place as oxygenated blood
passes through the different organs.
Deoxygenated blood enters into the vena cavae.
The blood goes back to the heart through the right
atrium. Then, the blood is pushed into the right
ventricle going to the lungs.
SOUND CHECK!
Sound 1
 Sound 2
 Sound 3

WHAT CAUSES THE BEATING SOUND OF
THE HEART?
the closing of the valves in the heart
 “lub” – tricuspid and mitral valve closing
 “DUB” – pulmonary and aortic valve closing
 Diastole – relaxation
 Systole – contraction

CAN YOU FEEL YOUR HEARTBEAT?
Place your palm on your chest and feel your
heartbeat.
 Count how many times your heart beat in one
minute.

FOR THE RECORD…
newborn baby : 120 – 160
 baby aged 1 – 12 mos.: 80 – 140
 baby / toddler aged 2 – 6: 75 – 120
 child aged 7 – 12: 75 – 110
 adult aged 18+ years: 60 – 100
 adult athlete: 40 – 60

NAME THAT TOOL!

Stethoscope – used to
listen to the heartbeat
IS THERE ANY OTHER WAY TO DETERMINE
OUR HEARTBEAT?

Activity 1 next session…