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Capillaries
The smallest blood vessels in our body.
Tunica media
The muscular layer of blood vessels.
Veins
Vessels that unite Venules.
Valves
All of the following are found in large arteries EXCEPT valves.
Distributing
Which of the following is NOT a type of capillary?
Venules
These vessels carry blood toward the heart.
Capillaries
The exchange between blood vessels and cells occurs here.
Arterioles
These vessels control blood flow to tissues.
Capillaries
Sinusoids are a highly modified form of these vessels.
Veins
These vessels also serve as a blood reservoir.
80 mm Hg
If you have a blood pressure of 120/80 mmHg, your diastolic pressure is 80 mm Hg.
30 mm Hg
If you have a blood pressure of 110/80 mmHg, your pulse pressure is 30 mm Hg.
Peripheral resistance
Blood flow is inversely proportional to the peripheral resistance.
Arterioles
Which of the following blood vessel types have the greatest effect on peripheral resistance?
Blood vessel length
Gaining weight may increase blood pressure because increased adipose tissue causes an increase in blood vessel length.
Sympathetic
This part of the nervous system is responsible for vasomotor tone.
An increase in blood pressure
Baroreceptors in our arteries respond to an increase in blood pressure.
Thermoreceptors
Which of the following does NOT modify cardiovascular center activity?
Regulating blood volume
Long-term mechanisms control blood pressure by regulating blood volume.
Aldosterone
The renin-angiotensin mechanism stimulates the release of Aldosterone from the adrenal cortex.
Right common carotid artery
Which of the following is NOT a branch off the arch of the aorta?
Ascending aorta
The first portion of the aorta is called the ascending aorta.
Lungs
In which of the following tissues would low oxygen levels cause vasoconstriction?
Internal carotids
These arteries supply 80% of the cerebrum.
Capillary hydrostatic pressure
Which of the following forces fluids out of the blood into the tissues?
Endothelins
Which of the following would cause vasoconstriction in the systemic circulation?
