This document describes the main parts of the heart and their functions. It discusses how the superior vena cava and inferior vena cava deliver deoxygenated blood to the right atrium. It then explains that the right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery and the left ventricle pumps oxygenated blood from the lungs to the body through the aorta. The document also mentions the roles of the valves in regulating blood flow through the heart chambers.

1. PARTS OF THE HEART AND THEIR FUNCTIONS

2. PARTS OF THE HEART AND THEIR FUNCTIONS
AORTA
- The body's largest artery.
- Takes oxygenated blood from the left
ventricle to the body.

3. PARTS OF THE HEART AND THEIR FUNCTIONS
SUPERIOR
VENA CAVA
bringing de-oxygenated blood from the body
to the heart. Veins from the head and upper
body feed into the superior vena cava, which
empties into the right atrium of the heart.
The superior vena
cava is one of the
two main veins

4. PARTS OF THE HEART AND THEIR FUNCTIONS
INFERIOR
VENA CAVA
- The inferior vena cava is a large vein
that carries de-oxygenated blood from the
lower body to the heart.

5. PARTS OF THE HEART AND THEIR FUNCTIONS
PULMONARY
ARTERY
- carries deoxygenated blood from
the right ventricle to the lungs.

6. PARTS OF THE HEART AND THEIR FUNCTIONS
PULMONARY
VEIN
- Takes oxygenated blood from
the lungs to the left atrium

7. PARTS OF THE HEART AND THEIR FUNCTIONS
LEFT ATRIUM
- Oxygen-rich blood from the lungs
enters the left atrium through the
pulmonary vein.

8. PARTS OF THE HEART AND THEIR FUNCTIONS
RIGHT ATRIUM
- Receives deoxygenated blood
from the body

9. PARTS OF THE HEART AND THEIR FUNCTIONS
LEFT
VENTRICLE
- Receives oxygenated blood from
the left atrium via the mitral valve
and pumps it through the aorta

10. PARTS OF THE HEART AND THEIR FUNCTIONS
RIGHT
VENTRICLE
- The chamber within the heart that is
responsible for pumping oxygen-
depleted blood to the lungs

11. PARTS OF THE HEART AND THEIR FUNCTIONS
TRICUSPID
VALVE
- The function of the tricuspid valve, or
right atrioventricular valve, is to prevent
back flow of blood into the right atrium.

12. PARTS OF THE HEART AND THEIR FUNCTIONS
BICUSPID
VALVE
- The bicuspid valve, or mitral valve,
permits blood to flow one way only, from
the left atrium into the left ventricle.

13. PARTS OF THE HEART AND THEIR FUNCTIONS
PULMONARY
VALVE
- This valve is opened by the increased blood
pressure of the ventricular systole (contraction of the
muscular tissue), pushing blood out of the heart and
into the artery. It closes when the pressure drops
inside the heart.

14. PARTS OF THE HEART AND THEIR FUNCTIONS
AORTIC VALVE
- The aortic valve functions to prevent the regurgitation
of blood from the aorta into the left ventricle during
ventricular diastole and to allow the appropriate flow of
blood—the cardiac output —from the left ventricle into
the aorta during ventricular systole.

15. PARTS OF THE HEART AND THEIR FUNCTIONS
HOW WILL
YOU TAKE
CARE OF
YOUR
HEART?

16. PARTS OF THE HEART AND THEIR FUNCTIONS
1. It is hallow muscular organ.
a. heart b. bloodc. vein
2. Thin-walled upper chambers.
a. ventricles b. atrium c. aorta
3. Thick-walled lower chambers.
a. atrium b. ventricles c. artery

17. PARTS OF THE HEART AND THEIR FUNCTIONS
4. They control the blood flow inside
the heart.
a. artery b. ventricles c. valves
5. It is called the alternating relaxations
and contractions of the heart?
a. cardiac cycle b. aorta
c. ventricles

18. PARTS OF THE HEART AND THEIR FUNCTIONS
ASSIGNMENT:
Memorize the parts of the
heart and the blood flow
process.