5 Written questions
5 Matching questions
- Tunica Media
- Fenestrated Capillaries
- Muscular (Distributing) Arteries
- a Have many fenestrations (pores) that allow quick fluid and larger solute exchange.
- b Small arteries that lead into capillary beds; controls blood flow into capillary beds by vasodilation and vasoconstriction; Deliver blood to capillaries.
- c Pressure wave caused by the expansion and recoil of elastic arteries. Varies with health, body position, and activity.
- d Smooth muscle and elastic fiber layer, regulated by sympathetic nervous system.
- e Distal to elastic arteries, deliver blood to body organs, have thick tunica media with more smooth muscle, active in vasoconstruction to adjust the rate of blood flow; Distribute blood to Arterioles.
5 Multiple choice questions
- Automatic adjustment of blood flow to each tissue in proportion to its requirements at any given point in time.
- ANP - Causes blood volume and pressure to decline (produced by atria of the heart0.
- Pressure exerted on arterial walls during ventricular contraction.
- Radial artery.
- Hint of poor nutrition and warning sign for Addision's disease (adrenal isnsufficiency) or hypothyroidism.
5 True/False questions
Tunica Externa (outermost) → Collagen fibers that protect and reinforce vessels.
Acute Hypotension → Important sign of circulatory shock.
Sinusoidal Capillaries → Exchange of gases, nutrients, wastes, hormones etc.
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.
What is Resistance more important in influencing local blood flow? → It is easily changed by altering blood vessel diameter.