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31 Cards in this Set

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Blood pressure is lowest in the
veins
In the capillaries, hydrostatic pressure (HP) is exerted by __________.
blood pressure
The net hydrostatic pressure (HP) is the hydrostatic pressure in the __________ minus hydrostatic pressure in the __________.
capillary; interstitial fluid
Which of the following would reflect the typical net hydrostatic pressure (HP) at the arterial end of the capillary?
34 mm Hg
The colloid osmotic pressure in the capillary is caused by __________.
proteins in the blood
Which net pressure draws fluid into the capillary?
net osmotic pressure
Reabsorption of fluid into the capillary takes place at the arterial end or venous end of the capillary?
venous
Arterial blood flow rises and falls during the cardiac cycle because __________.
arterial pressure rises and falls
Peripheral resistance depends on all of the following factors except __________.
blood colloid osmotic pressure
In liver disease, the production of plasma proteins can be greatly reduced. This often leads to __________.
decreased blood colloid osmotic pressure
Which of these helps move blood around the systemic system?
a. smooth muscle in the tunica media
b. arterial pressure greater than venous pressure
c. right ventricle
d. venous pressure greater than arterial pressure
b. arterial pressure greater than venous pressure
As blood travels from arteries to veins,
pressure drops
Blood pressure increases with all of the following, except increased
a. cardiac output
b. parasympathetic innervation
c. peripheral resistance
d. blood volume
e. force of cardiac contraction
b. parasympathetic innervation
The difference between the systolic and diastolic pressures is called the ________ pressure.
pulse
The blood colloid osmotic pressure mostly depends on the
concentration of plasma proteins
Clinically, the term blood pressure usually refers to
arterial pressure
Which of the following would have the greater effect on vascular resistance?
decreasing the diameter of a blood vessel by 1/2
In which of the following would the blood flow be highest?
a. a vessel 1.0 cm in diameter and 10 meters long
b. a vessel 1.0 cm in diameter and 2 meters long
c. a vessel 0.5 cm in diameter and 2 meters long
d. a vessel 0.5 cm in diameter and 4 meters long
b. a vessel 1.0 cm in diameter and 2 meters long
True/False: Blood pressure drops the most within arterioles.
true
Where are the sensors for the arterial baroreceptor reflex located?
carotid sinus and aortic arch
If blood pressure is increased at the arterial baroreceptors, what would happen with the activity level of the parasympathetic nervous system (PNS) and sympathetic nervous system (SNS)?
increased PNS activity and decreased SNS activity
Which of the following would cause vasodilation of arterioles?
decreased activity of the sympathetic nervous system
Stimulation of the adrenal medulla would result in which of the following?
an increase in heart rate and contractility
A decrease in blood pressure at the arterial baroreceptors would result in which of the following?
an increase in heart contractility
Each of the following would cause an increase in blood pressure except __________.
a. increase in blood volume
b. increase in peripheral resistance
c. an inhibitor of angiotensin II
d. increase in aldosterone
c. an inhibitor of angiotensin II
The cardiovascular centers in the medulla oblongata control __________.
a. cardiac contractility
b. peripheral resistance
c. heart rate
d. All of these are controlled by the cardiovascular centers in the medulla oblongata
d. All of these are controlled by the cardiovascular centers in the medulla oblongata
Each of the following will lead to a decrease in blood pressure, except
a. decreased levels of aldosterone
b. release of renin
c. increased levels of ANP (atrial natriuretic peptide)
d. decreased in blood volume
b. release of renin
Each of the following will cause an increase in blood pressure, except
a. increased levels of aldosterone
b. increased levels of ANP (atrial natriuretic peptide)
c. increased levels of angiotensin II
d. increased blood volume
b. increased levels of ANP (atrial natriuretic peptide)
Vickie has a tumor that secretes excess amounts of the hormone aldosterone. Because of the elevated level of hormone, she exhibits
both increased blood pressure and increased body stores of sodium ion.
If a person has a blood pressure of 120/90, his mean arterial pressure would be ________ mm Hg.
100
Which set of changes correctly describes the baroreceptor reflex in response to increased blood pressure?
a. increased vessel diameter, decreased resistance, decreased cardiac output
b. decreased vessel diameter, decreased resistance, decreased cardiac output
c. increased vessel diameter, increased resistance, increased cardiac output
d. decreased vessel diameter, increased resistance, decreased cardiac output
a. increased vessel diameter, decreased resistance, decreased cardiac output