04:20Pre-capillary sphincters | Circulatory system physiology | NCLEX-RN | Khan Academykhanacademymedicine274views
09:30Blood Vessels, Part 1 - Form and Function: Crash Course Anatomy & Physiology #27CrashCourse804views6rank
09:17Three types of capillaries | Circulatory system physiology | NCLEX-RN | Khan Academykhanacademymedicine268views2rank
Multiple ChoiceWhich type of capillary is characterized by a discontinuous basement membrane, allowing for the easy passage of larger molecules and cells?219views4rank
Multiple ChoiceWhich of the following areas of the body has the highest concentration of capillary beds?186views3rank
Multiple ChoiceWhich of the following best describes the microcirculatory flow of blood (microcirculation)?194views4rank
Multiple ChoiceWhich scenario results in constriction of arterioles & precapillary sphincters in mesenteric capillary beds?198views
Multiple ChoiceWhich structure regulates blood flow distribution in mesenteric capillary beds & diverts blood from one area to another based on local metabolic needs?201views1rank
Multiple ChoiceExchange of gases and nutrients occurs by diffusion between the __________.1290views2rank
Multiple ChoiceThe only vessels that provide direct access to nearly every cell in the body are the __________.973views
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.214views1rank
Textbook QuestionThe local control of blood flow due to the action of precapillary sphincters is (a) vasomotion, (b) autoregulation, (c) selective resistance, (d) turbulen200views1rank
Textbook QuestionHow is the anatomy of capillaries and capillary beds well suited to their function?237views1rank
Textbook QuestionWhy do capillaries permit the diffusion of materials, whereas arteries and veins do not?212views1rank
Textbook QuestionWhich of the following structures is the 'leakiest'?a. Continuous capillaryb. Sinusoidal capillaryc. Precapillary sphincterd. Fenestrated capillary194views1rank
Multiple ChoiceWhich of the following correctly describes the flow of blood through a mesenteric capillary bed when the precapillary sphincters are constricted?205views3rank
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.373views1rank
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.142views
4:36
