04:20Pre-capillary sphincters | Circulatory system physiology | NCLEX-RN | Khan Academykhanacademymedicine276views
09:30Blood Vessels, Part 1 - Form and Function: Crash Course Anatomy & Physiology #27CrashCourse808views6rank
09:17Three types of capillaries | Circulatory system physiology | NCLEX-RN | Khan Academykhanacademymedicine270views2rank
Multiple ChoiceWhich type of capillary is characterized by a discontinuous basement membrane, allowing for the easy passage of larger molecules and cells?220views4rank
Multiple ChoiceWhich of the following areas of the body has the highest concentration of capillary beds?188views3rank
Multiple ChoiceWhich of the following best describes the microcirculatory flow of blood (microcirculation)?195views4rank
Multiple ChoiceWhich scenario results in constriction of arterioles & precapillary sphincters in mesenteric capillary beds?200views
Multiple ChoiceWhich structure regulates blood flow distribution in mesenteric capillary beds & diverts blood from one area to another based on local metabolic needs?203views1rank
Multiple ChoiceExchange of gases and nutrients occurs by diffusion between the __________.1293views2rank
Multiple ChoiceThe only vessels that provide direct access to nearly every cell in the body are the __________.974views
Textbook QuestionLarge molecules such as peptides and proteins move into and out of the bloodstream by way of (a) continuous capillaries, (b) fenestrated capillaries, (c) thoroughfare channels, (d) venules.216views1rank
Textbook QuestionThe local control of blood flow due to the action of precapillary sphincters is (a) vasomotion, (b) autoregulation, (c) selective resistance, (d) turbulen202views1rank
Textbook QuestionHow is the anatomy of capillaries and capillary beds well suited to their function?239views1rank
Textbook QuestionWhy do capillaries permit the diffusion of materials, whereas arteries and veins do not?216views1rank
Textbook QuestionWhich of the following structures is the 'leakiest'?a. Continuous capillaryb. Sinusoidal capillaryc. Precapillary sphincterd. Fenestrated capillary197views1rank
Multiple ChoiceWhich of the following correctly describes the flow of blood through a mesenteric capillary bed when the precapillary sphincters are constricted?206views3rank
Textbook QuestionBlood flow in the capillaries is steady despite the rhythmic pumping of the heart because of the a. elasticity of the large arteries, b. small diameter of capillaries, c. thin walls of the veins, d. venous valves.377views1rank
Textbook QuestionCapillaries consist of:a. three thin tunics.b. only a thin tunica intima with a well-developed internal elastic lamina.c. a thin sheet of endothelium with a basal lamina.d. stratified epithelium.144views
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