AP II chap 20 lec. quiz

true or false Angiogenesis is the generation of new blood vessels in tissues that require them.

true

nder the microscope, a blood vessel is observed to have a relatively thin wall, a large lumen, is collapsed, and contains a thick tunica externa. This is probably a(n)

vein

How do veins return blood to the heart? Check all that are correct.

-Veins have one-way valves that prevent backflow in the limbs. -The contraction of skeletal muscles helps push the blood in veins back toward the heart.

Put the events of fetal circulation into the correct order, beginning with oxygenated blood.

1.Blood from the placenta enters the umbilical vein. 2.Blood is shunted away from the liver and toward the inferior vena cava. 3.Oxygenated blood in the ductus venosus mixes with deoxygenated blood in the inferior vena cava. 4.Blood empties into the right atrium. 5.Blood is shunted from the right atrium to the left atrium via the foramen ovale. 6.Blood flows into the left ventricle and is pumped out through the aorta.

When blood that is low in oxygen is pumped out of the right ventricle, what is the order of vessels in its path? (its pathway to the lungs and back)

1.Enters the pulmonary trunk 2.Enters either the left or right pulmonary arteries 3.enters arterioles 4.enters capillaries 5.enters venules 6.enters veins 7.enters left atrium

A patient's systolic pressure is 130 and diastolic pressure is 90. What is the pulse pressure?

40 pulse pressure = systolic - diastolic

Which of the following would cause a temporary increase in arterial blood pressure? Check all that apply.

Increased blood volume Increased cardiac output Vasoconstriction

hydrostatic and osmotic pressure

The physical force exerted by a fluid on a structure is hydrostatic pressure. The main pressure is the blood hydrostatic pressure, which pushes materials out of the capillary. The other main force regulating filtration and reabsorption is osmotic pressure, which refers to the "pull" of water into an area by osmosis due to the higher relative concentration of solutes.

Capillaries connect ___________ to venules.

arterioles

Upon dissection of a capillary, it is found to contain intercellular clefts, but otherwise no pores, openings or gaps in the vessel wall. This is probably a __________ capillary.

continuos the others are ; fenestrated ( some pores ) Sinusoidal ( many large pores ) - ex liver , bone marrow

Deoxygenated blood from the heart myocardium drains into the right atrium via the

coronary sinus

During liver disease, levels of blood proteins may be low. This would __________ blood colloid osmotic pressure.

decrease

When carbon dioxide accumulates in a tissue, local arterioles will _________, increasing perfusion and decreasing carbon dioxide levels.

dilate