1. External Anatomy of the Heart5
B. 3
C. 2
D. Pulmonary artery
E. Aorta
3. F. Vein
G. Inferior vena cava
4. H. A
Contracting heart muscle
5. j. Right coronary artery, left coronary artery
k. Aorta
6. l. B
7. m. Because it travels along the margin of the heart
8. n. D

2. Internal Anatomy of the heart4
Atria
Ventricles
Superior and inferior vena cava
Sends deoxygenated blood from right ventricle to lungs
Bring oxygen rich blood from the lungs to the left atrium
Between the right atrium and right ventricle
Between the left atrium and left ventricle
Deoxygenated blood
Oxygenated blood
Sends O2 rich blood from the left ventricle to the body.

3. Power Notes – 30.3 From: Upper body To: the lungs From: the lungs
To: The upper body
To: The lungs
From: The lungs
To: the lower body
8. From: Lower body
Right atrium: Blood from upper/lower body enters, pumped
to right ventricle
Right ventricle: Blood pumped to lungs
Left atrium: Blood from lungs enters, pumped to left ventricle
Left ventricle: Blood pumped to rest of body

4. Chapter 30.4 Study guide Y Diagram: Arteries Veins: Both:
Made of 3 layers with thick muscle, elastic fibers
Smaller arteries called arterioles connect to capillaries.
Veins:
Made of 3 layers, larger diameter, thinner walls.
Valves and skeletal muscles keep blood moving
Smaller veins called venules connect to capillaries
Both:
Made of the same 3 layers of tissues
Smaller vessels that connect to capillaries

5. 30.4 Study guide continues…1.
Capillaries are much smaller than veins and arteries and have only one layer,
Walls are one cell thick
Materials diffuse easily into and out of them
Form dense networks
2. The force with which blood pushes against an artery
3. Systolic: The pressure on the artery wall when the left ventricle contracts.
Diastolic: The pressure in the artery when the left ventricle relaxes.
4. Untreated, it can lead to heart attack and stoke.
5. Thickened artery walls (or arteriosclerosis), blocked arteries (or atheriosclerosis),
Hypertension
7. Balloon angioplasty
8. Bypass surgery
9. Heart attack
10. Stroke
11. Systolic pressure = the ventricle contracts
Diastolic pressure = the ventricle relaxes or expands

6. Blood vessels worksheet
Arteries
Veins
Aorta
Distributing arteries
Arterioles
Capillaries
In the capillaries
Like a net made of extremely small tubes.
Venule
Left and right common carotid artery
Left and right external and internal jugular veins
Left subclavian artery
Left subclavian vein
Left femoral artery
Great saphenous vein

7. 16. A
17. B
18. C
19. Oxygen and nutrients
20. Carbon dioxide and wastes
21. A vein is a larger blood vessel than a venule. The venule bring blood from the capillaries to the vein.
22. They carry blood to the rest of the body.
23. An artery that travels through the thigh – femur is the thigh bone.
24. Capillaries have extremely thin walls and high pressure would burst them.