5 Written questions
5 Matching questions
- Elastic (Conducting) Arteries
- What is Resistance more important in influencing local blood flow?
- What is Blood Flow inversely proportional with?
- Angiotensin II
- What is Short Term control of blood pressure?
- a Kidney release of renin generates angiotensis II, which causes vasoconstriction. Increase BP.
- b It is easily changed by altering blood vessel diameter.
- c Neural and hormonal controls - counteract functuations in blood pressure by altering peripheral resistance.
- d Peripheral Resistance (R). - If R increases, blood flow decreases.
- e Thick walled arteries near the heart. Act as pressure reservoirs - expand and recoil as blood is ejected from the heart.
Conduct blood from the heart into Muscular Arteries.
5 Multiple choice questions
- Collagen fibers that protect and reinforce vessels.
- Radial artery.
- Low blood pressure, systolic pressure below 100 mg Hg. Often associated with long life and lack of cardiovascular illness.
- The friction between blood and blood vessel walls.
- Blood hydrostatic pressure gradient. - If P increases, BF speeds up.
5 True/False questions
Venules → Formed when capillary beds unite. Allow fluids and WBC's to pass from the bloodstream to tissues. Collect blood from capillaries and pass it on to veins.
Capillaries → Microscopic blood vessels, walls of thin tunica intima, one cell thick. Size only allows one RBC at a time; Permit exchange of nutrients and wastes between blood and interstitial fluid.
tunics that compose the Arteries and Veins → Tunica Interna (innermost), Tunica Media (middle), Tunica Externa (outermost).
factors that remain relatively constant in vascular resistance → Blood viscosity, total blood vessel length, blood vessel diameter.
Mean Arterial Pressure → (MAP), average pressure in the arteries.