EXAM 2 - BIOS255
CHAMBERLAIN QUESTIONS
AND VERIFIED CORRECT
ANSWERS
what is vasodilation? - CORRECT ANSWER-increase in the diameter of the lumen of a blood
vessel to allow for greater blood flow
how is vasodilation accomplished? - CORRECT ANSWER-by relaxing/inhibiting smooth muscle of
the tunica media
what is vasoconstriction? - CORRECT ANSWER-decrease in diameter of the lumen of a blood
vessel
how is vasoconstriction accomplished? - CORRECT ANSWER-by contracting smooth muscle in
the tunica media
what is the hepatic portal system? - CORRECT ANSWER-group of veins that drain blood from
various organs of the gastrointestinal tract
is the hepatic portal system oxygen rich or oxygen poor? - CORRECT ANSWER-oxygen poor
blood but nutrient rich
,once blood has been processed in the hepatic portal system where does it go? - CORRECT
ANSWER-it leaves the liver and goes through the hepatic vein
three factors that determine systemic vascular resistance are - CORRECT ANSWER-blood vessel
diameter, blood vessel length, and blood viscosity
a decrease in ____ increases resistance and requires an increase in pressure to maintain the
original flow rate - CORRECT ANSWER-blood vessel diameter
increase in ____ increases resistance and requires an increase in blood pressure to maintain the
original flow rate - CORRECT ANSWER-blood vessel length
an increase in ___ results in thicker blood that is harder to move and requires an increase in
blood pressure to maintain the original flow rate - CORRECT ANSWER-blood viscosity
what is most commonly used to control blood pressure and why - CORRECT ANSWER-blood
vessel diameter because we can control it immediately
the greater the resistance the ___ the blood flow - CORRECT ANSWER-less
MAP = - CORRECT ANSWER-([systolic pressure - diastolic pressure] / 3) + diastolic pressure
blood flow = - CORRECT ANSWER-change in pressure (P aorta) / resistance (Pr atrium)
what is cardiac output? - CORRECT ANSWER-amount of blood pumped out of the left ventricle
per minute so it will influence blood pressure in vessels
capillary net filtration pressure equation - CORRECT ANSWER-(NFP = (BHP +IFOP) - (BCOP +
IFHP))
, two factors that promote filtration - CORRECT ANSWER-BHP and IFOP
two factors that oppose filtration - CORRECT ANSWER-BCOP and IFHP
net negative number = - CORRECT ANSWER-reabsorption
what is reabsorption? - CORRECT ANSWER-fluid moving back into the blood from the interstitial
fluid
net positive number = - CORRECT ANSWER-filtration
what is filtration - CORRECT ANSWER-fluid moving from the blood into the interstitial fluid
if the amount of fluid that is reabsorbed on the venous end does not equal the amount of fluid
filtered on the arterial end, what can happen - CORRECT ANSWER-an accumulation of fluid can
happen in the interstitial space = edema
veins function as a blood reservoir that can increase venous return to the heart when -
CORRECT ANSWER-systemic venoconstriction increases venous return
what is bulk flow - CORRECT ANSWER-the movement of a fluid driven by pressure
what is the net filtration pressure equation - CORRECT ANSWER-NFP = (HPblood - HPtissue) -
(COPblood - COP tissue)
What is angiogenesis? - CORRECT ANSWER-growth of new blood vessels
CHAMBERLAIN QUESTIONS
AND VERIFIED CORRECT
ANSWERS
what is vasodilation? - CORRECT ANSWER-increase in the diameter of the lumen of a blood
vessel to allow for greater blood flow
how is vasodilation accomplished? - CORRECT ANSWER-by relaxing/inhibiting smooth muscle of
the tunica media
what is vasoconstriction? - CORRECT ANSWER-decrease in diameter of the lumen of a blood
vessel
how is vasoconstriction accomplished? - CORRECT ANSWER-by contracting smooth muscle in
the tunica media
what is the hepatic portal system? - CORRECT ANSWER-group of veins that drain blood from
various organs of the gastrointestinal tract
is the hepatic portal system oxygen rich or oxygen poor? - CORRECT ANSWER-oxygen poor
blood but nutrient rich
,once blood has been processed in the hepatic portal system where does it go? - CORRECT
ANSWER-it leaves the liver and goes through the hepatic vein
three factors that determine systemic vascular resistance are - CORRECT ANSWER-blood vessel
diameter, blood vessel length, and blood viscosity
a decrease in ____ increases resistance and requires an increase in pressure to maintain the
original flow rate - CORRECT ANSWER-blood vessel diameter
increase in ____ increases resistance and requires an increase in blood pressure to maintain the
original flow rate - CORRECT ANSWER-blood vessel length
an increase in ___ results in thicker blood that is harder to move and requires an increase in
blood pressure to maintain the original flow rate - CORRECT ANSWER-blood viscosity
what is most commonly used to control blood pressure and why - CORRECT ANSWER-blood
vessel diameter because we can control it immediately
the greater the resistance the ___ the blood flow - CORRECT ANSWER-less
MAP = - CORRECT ANSWER-([systolic pressure - diastolic pressure] / 3) + diastolic pressure
blood flow = - CORRECT ANSWER-change in pressure (P aorta) / resistance (Pr atrium)
what is cardiac output? - CORRECT ANSWER-amount of blood pumped out of the left ventricle
per minute so it will influence blood pressure in vessels
capillary net filtration pressure equation - CORRECT ANSWER-(NFP = (BHP +IFOP) - (BCOP +
IFHP))
, two factors that promote filtration - CORRECT ANSWER-BHP and IFOP
two factors that oppose filtration - CORRECT ANSWER-BCOP and IFHP
net negative number = - CORRECT ANSWER-reabsorption
what is reabsorption? - CORRECT ANSWER-fluid moving back into the blood from the interstitial
fluid
net positive number = - CORRECT ANSWER-filtration
what is filtration - CORRECT ANSWER-fluid moving from the blood into the interstitial fluid
if the amount of fluid that is reabsorbed on the venous end does not equal the amount of fluid
filtered on the arterial end, what can happen - CORRECT ANSWER-an accumulation of fluid can
happen in the interstitial space = edema
veins function as a blood reservoir that can increase venous return to the heart when -
CORRECT ANSWER-systemic venoconstriction increases venous return
what is bulk flow - CORRECT ANSWER-the movement of a fluid driven by pressure
what is the net filtration pressure equation - CORRECT ANSWER-NFP = (HPblood - HPtissue) -
(COPblood - COP tissue)
What is angiogenesis? - CORRECT ANSWER-growth of new blood vessels
