Exercise 30 Anatomy of the Heart

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EXERCISE

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Anatomy of the Heart
Gross Anatomy of the Human Heart
1. An anterior view of the heart is shown here. Match each structure listed on the left with the correct letter in the figure.
G

1. right atrium 2. right ventricle 3. left atrium

a b

J R U B K D N A

c

o

4. left ventricle 5. superior vena cava 6. inferior vena cava 7. ascending aorta 8. aortic arch 9. brachiocephalic artery 10. left common carotid artery 11. left subclavian artery 12. pulmonary trunk 13. right pulmonary artery 14. left pulmonary artery 15. ligamentum arteriosum 16. right pulmonary veins 17. left pulmonary veins 18. right coronary artery 19. anterior cardiac vein d e f g h s t p q r

L

i u j v w k

M

E C

x

P

O F Q H I

T S W X

20. left coronary artery 21. circumflex artery 22. anterior interventricular artery 23. apex of heart 24. great cardiac vein

V

201

2. What is the function of the fluid that fills the pericardial sac?

Fluid in the pericardial sac allows the heart to beat in a

relatively frictionless environment, to reduce friction during heart activity

3. Match the terms in the key to the descriptions provided below.

F
A H E A G

Key: a. b. c. d. e. f. g. h. atria coronary arteries coronary sinus endocardium epicardium mediastinum myocardium ventricles

1. location of the heart in the thorax 2. superior heart chambers 3. inferior heart chambers 4. visceral pericardium 5. “anterooms” of the heart 6. equals cardiac muscle 7. provide nutrient blood to the heart muscle 8. lining of the heart chambers 9. actual “pumps” of the heart 10. drains blood into the right atrium

B D G C

4. What is the function of the valves found in the heart?

The valves enforce a one-way blood flow through the heart

chambers; and prevents back-flow of blood
5. What is the role of the chordae