1. The Human Heart

2. Parts of the Internal Heart
6
1 7
2 8
9
3
4 10
5
11

3. Superior vena cava
 Receives oxygen poor blood from upper body.
 Pacemaker.
 Sends electrical signals to cause heart muscles to
contract.
 Right atrium.
 Receives oxygen poor blood from the superior
vena caba and i.vc.

4. Triscupid Valve
 Control blood flows into right ventricle.
 Right ventricle.
 Channels oxygen poor blood into the
pulmonary arteries.
 Pulmonary arteries.
 Transport oxygen rich blood to the lungs.

5. Pulmonary Veins.
 Transport oxygen rich blood from lungs into
the atrium.
 Left atrium.
 Receives oxygen rich blood from the pulmonary
veins

6. Bicuspid valve
 Control blood flow into left ventricle.
 Left ventricle.
 Pumps oxygen rich blood into aorta.

7. Aortic Valve
 Prevents blood from going back into the left
ventricle

8. Tricuspid Valve
 Prevents backflow of blood to the right atrium
 3 cusps

9. Aorta
 Blood flows from the aorta throughout the
entire body
 Largest vessel in the body

10. Descending aorta.
 Transport oxygen rich blood to lower body.
 Facts.
 Your heart pumps to 35L of blood each minute.
 When you are active.
 It can continues to beat during transplant
surgery, after all nerves have been cut.

11. Right Atrium
 Collecting chamber
 Blood is forced to the right ventricle

12. Veins and arteries
 Jugular veins
 Subclavian artery and vein.
 Hepatic artery and veins
 Inferior vena cava.
 Tibial artery and vein.
 Caratoid artery.
 Descending aorta

13.  Renal artery and veins.
 Femoral artery and vein.

14. Path of Blood Flow
Place the following items in the correct sequence: body tissue, aorta, bicuspid
valve, left atrium, lungs, pulmonary trunk, pulmonary arteries, left ventricle,
pulmonary veins, right atrium, right ventricle, tricuspid valve, aortic valve,
pulmonary valve.
Oxygen poor blood is collected from the inferior and ___________
_______ ________. It is released into the _________ _______
where it moves through the _________ valve into the ________
__________. When the right ventricle contracts, blood is forced
through the _________ valve into the ____________ _______ which
splits into the left & right pulmonary __________. Blood is taken via
the arteries to the _____ where oxygen & carbon dioxide diffuse
through the simple squamous tissue. Oxygen-rich blood then returns
to the heart via the ___________ ________ which empty into the
_________ ________. Once the atrium contracts, the blood passes
through the __________ ________ into the _________ _________.
Once the ventricle contracts blood is forced through the _________
valve and out of the _________ to travel to the _______ ________ .

15. Right Ventricle
 Receives blood from the superior and inferior
vena cava

16. Path of Blood Flow: Answer
Sheet
1. Superior Vena Cava
2. Right Atrium
3. Tricuspid Valve
4. Right Ventricle
5. Pulmonary Valve
6. Pulmonary Trunk
7. Pulmonary Arteries
8. Lungs
9. Pulmonary Veins
10. Left Atrium
11. Bicuspid Valve/Mitral valve
12. Left Ventricle
13. Aortic Valve
14. Aorta
15. Body Tissue