Chapter 19 Flashcards
The vessel layer that has a direct role in vasoconstriction is the __________.
tunica media
Blood flows directly from __________ into capillary beds.
arterioles
The vessels that exhibit the lowest level of permeability are the __________.
continuous capillarie
When would the capillary beds surrounding the gastrointestinal organs be open?
when digesting a meal
Which of the following is true when comparing arteries and veins?
Arteries carry blood away from the heart; veins carry blood to the heart.
Blood flow would be increased by __________.
increasing cardiac output
systolic pressure
peak of aortic pressure
diastolic pressure
owest level of aortic pressure
pulse pressure
the difference between systolic and diastolic pressure
mean arterial pressure
pressure that propels blood to the tissues
Which of the following acts on the kidneys and blood vessels to raise blood pressure?
antidiuretic hormone
Hypertension is defined physiologically as a condition of sustained arterial pressure of __________ or higher.
140/90
If the net filtration pressure (NFP) is positive, then fluid is reabsorbed into the blood.
False
Which of the following would experience increased blood flow during exercise?
skin
Fluids would be likely to leave or filter out of the capillary if __________.
net hydrostatic pressure (HP) is greater than net osmotic pressure (OP)
