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Describe the changes in blood flow and pressure that result when someone engages in prolonged strenuous exercise. Indicate how pressure, flow, and resistance change systemically and in the skeletal muscles being used.

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CO rises dramatically, increas...

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Blood hydrostatic pressure in systemic capillaries is greater than interstitial fluid hydrostatic pressure.

A) True
B) False

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Precapillary sphincters will


A) control blood flow into the true capillaries.
B) cause blood to flow directly from the metarteriole into the postcapillary venule.
C) open when the tissue needs nutrients.
D) close when the tissue's needs have been met.
E) All of the answers are correct.

F) All of the above
G) B) and E)

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Give the formula for net filtration pressure; then include typical values (at the arterial end of a capillary bed) for all variables and include units.

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NFP = (HPb - HPif) - (C...

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Low blood pressure may cause the net hydrostatic pressure of a capillary to be less than normal. This will result in a(n) ________ net filtration pressure.


A) decreased
B) increased
C) unchanged

D) A) and C)
E) A) and B)

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When resistance is high, a larger blood pressure gradient must be produced to maintain adequate blood flow.

A) True
B) False

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Systolic blood pressure is recorded


A) in arteries and is the minimum pressure that is recorded during ventricular relaxation.
B) in arteries and is the maximal pressure that is recorded during ventricular contraction.
C) in veins and is the maximal pressure recorded during atrial contraction.
D) in veins and is the minimum pressure recorded during atrial relaxation.
E) in both arteries and veins and is the maximum pressure recorded during diastole of the heart.

F) A) and D)
G) All of the above

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Branches of the subclavian arteries carry blood on the way to the brain, neck and shoulder muscles, and mammary glands.

A) True
B) False

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Most of the venous blood of the cranium drains through large vessels known as the ________ venous sinuses.

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The popliteal artery supplies the


A) hip joint.
B) knee joint.
C) elbow joint.
D) palmar region.

E) B) and D)
F) None of the above

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The ________ is composed of circularly arranged layers of smooth muscle cells.


A) tunica media
B) tunica externa
C) tunica intima
D) tunica interna
E) None of the answers is correct.

F) A) and E)
G) A) and B)

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Blood pressure is lowest in


A) arteries.
B) veins.
C) arterioles.
D) venules.
E) capillaries.

F) C) and E)
G) All of the above

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Systolic pressure is greater than diastolic pressure due to the force generated by ventricular contraction.

A) True
B) False

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Net filtration pressure (NFP) is equal to the


A) blood hydrostatic pressure minus the tissue hydrostatic pressure.
B) colloid osmotic pressure in the blood divided by resistance in the tissue.
C) blood pressure times the total peripheral resistance.
D) net hydrostatic pressure minus the net colloid osmotic pressure.
E) osmotic pressure in the tissue minus the hydrostatic pressure in the blood.

F) All of the above
G) A) and B)

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Select all that apply. The hepatic portal vein contains blood from the


A) splenic vein.
B) superior mesenteric vein.
C) inferior mesenteric vein.
D) hepatic veins.

E) None of the above
F) B) and D)

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The end of the aorta occurs when the vessel bifurcates into the


A) brachiocephalic artery.
B) subclavian arteries.
C) common iliac arteries.
D) common carotid arteries.
E) None of these answers is correct.

F) B) and D)
G) A) and D)

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The contraction of skeletal muscles plays an important role in the movement of blood in the veins.

A) True
B) False

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If someone suffered from hypertension, such that the blood pressure in their capillaries was elevated, then net filtration pressure would be


A) above normal.
B) below normal.

C) A) and B)
D) undefined

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The femoral vein becomes the external iliac vein when it


A) merges with the popliteal vein.
B) merges with the internal iliac vein.
C) passes above the inguinal ligament.
D) passes above the tenth thoracic vertebra.

E) B) and C)
F) A) and D)

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The stomach needs the celiac artery blood supply in order to receive blood.

A) True
B) False

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