The document provides information about the anatomy and function of the heart. It describes the heart as a muscular pump located between the lungs that circulates blood through two circuits: deoxygenated blood enters the right atrium and is pumped to the lungs by the right ventricle, then oxygenated blood returns to the left atrium and is pumped through the body by the left ventricle. It details the chambers, valves, coverings and blood flow pathway through the heart.

1. Construct your interactive notes
• 6pages
• Chapter 12: Heart and Chapter 13: Blood Vessels
• Name, period, seat #
• Color picture

2. Heart Anatomy, Part 1 (pg 2)

3. Heart Anatomy (pg 2)
• Heart: muscular pump that provides the force
necessary to circulate blood to all tissues in
the body

4. Heart Anatomy (pg 2)
• Heart: muscular pump that provides the force
necessary to circulate blood to all tissues in
the body
• Pumps about 5 liters of blood per minute

5. Location
• Between the lungs. Rests on the diaphragm.
Most superior portion is at the level of the
second rib

6. Location
• Between the lungs. Rests on the diaphragm.
Most superior portion is at the level of the
second rib
• 2/3 of the heart is to the left of the body
midline

7. Location
• Between the lungs. Rests on the diaphragm.
Most superior portion is at the level of the
second rib
• 2/3 of the heart is to the left of the body
midline
• Heart is about the size of a closed fist

8. Coverings
• Heart is covered by a loose two-layered sac
called the pericardium

9. Coverings
• Heart is covered by a loose two-layered sac
called the pericardium
• Fibrous pericardium: tough, protective outer
layer.

10. Coverings
• Heart is covered by a loose two-layered sac
called the pericardium
• Fibrous pericardium: tough, protective outer
layer.
• Parietal pericardium: Thin inner layer.
Produces pericardial fluid for lubrication

11. Heart Wall
• Called the myocardium and made of cardiac
muscle

12. Heart Wall
• Called the myocardium and made of cardiac
muscle
• Cells are connected by intercalated disks

13. Heart Wall
• Called the myocardium and made of cardiac
muscle
• Cells are connected by intercalated disks
• Myocardium is supplied with oxygenated
blood by the coronary arteries, which branch
off the aorta

14. Heart Wall
• Called the myocardium and made of cardiac
muscle
• Cells are connected by intercalated disks
• Myocardium is supplied with oxygenated
blood by the coronary arteries, which branch
off the aorta
• Blockage of coronary artery = heart attack

15. Chambers of the Heart
Atria: thin-walled chambers that receive blood
from veins.

16. Chambers of the Heart
Atria: thin-walled chambers that receive blood
from veins.
Ventricles: thick-walled chambers that forcefully
pump blood

17. 1. Right Atrium: receives deoxygenated blood
from the superior and inferior vena cava

18. 1. Right Atrium: receives deoxygenated blood
from the superior and inferior vena cava
2. Right Ventricle: pumps blood through the
pulmonary arteries to the lungs, where it
becomes oxygenated

19. 1. Right Atrium: receives deoxygenated blood
from the superior and inferior vena cava
2. Right Ventricle: pumps blood through the
pulmonary arteries to the lungs, where it
becomes oxygenated
3. Left Atrium: receives oxygenated blood from
the lungs via the pulmonary veins

20. 1. Right Atrium: receives deoxygenated blood
from the superior and inferior vena cava
2. Right Ventricle: pumps blood through the
pulmonary arteries to the lungs, where it
becomes oxygenated
3. Left Atrium: receives oxygenated blood from
the lungs via the pulmonary veins
4. Left Ventricle: Pumps oxygenated blood to
the body via the aorta. Thickest, strongest
chamber

21. Heart Dance

22. Heart Dance
• RIGHT Atrium, Ventricle LUNGS!

23. Heart Dance
• RIGHT Atrium, Ventricle LUNGS!
• LEFT Atrium, Ventricle BODY!

24. Heart Anatomy, Part 2 (pg 4)

25. Valves of the Heart
Valves prevent blood from flowing backward

26. Valves of the Heart
Valves prevent blood from flowing backward
1. Atrioventricular (AV) valves: Between atria
and ventricles

27. Valves of the Heart
Valves prevent blood from flowing backward
1. Atrioventricular (AV) valves: Between atria
and ventricles
• Anchored by strings called the
chordaetendineae, which prevents the valve
from letting blood back into the atria

28. Valves of the Heart
Valves prevent blood from flowing backward
1. Atrioventricular (AV) valves: Between atria
and ventricles
• Anchored by strings called the
chordaetendineae, which prevents the valve
from letting blood back into the atria
• Right = tricuspid valve

29. Valves of the Heart
Valves prevent blood from flowing backward
1. Atrioventricular (AV) valves: Between atria
and ventricles
• Anchored by strings called the
chordaetendineae, which prevents the valve
from letting blood back into the atria
• Right = tricuspid valve
• Left = bicuspid (mitral) valve

30. 2. Semilunar Valves: located at the bases of
blood vessels that carry blood from the
ventricles

31. 2. Semilunar Valves: located at the bases of
blood vessels that carry blood from the
ventricles
• Each valve has 3 cup-like cusps. When blood
flows back toward the ventricles, the cups fill
with blood, causing the valve to close

32. 2. Semilunar Valves: located at the bases of
blood vessels that carry blood from the
ventricles
• Each valve has 3 cup-like cusps. When blood
flows back toward the ventricles, the cups fill
with blood, causing the valve to close
• Pulmonary SL valve: at exit of right ventricle

33. 2. Semilunar Valves: located at the bases of
blood vessels that carry blood from the
ventricles
• Each valve has 3 cup-like cusps. When blood
flows back toward the ventricles, the cups fill
with blood, causing the valve to close
• Pulmonary SL valve: at exit of right ventricle
• Aortic SL valve: at exit of left ventricle

34. Pathway of Blood
• Hand-written notes