Circulatory System Questions and Answers A+ Graded (2025).

Circulatory System Questions and
Answers A+ Graded (2025)




Which .blood .vessel .have .the .thickest .walls? .- .CORRECT .ANSWER-arteries

How .many .walls .does .an .artery .have? .- .CORRECT .ANSWER-3

Which .two .types .of .blood .vessels .use .contraction .and .have .muscles? .-
.CORRECT .ANSWER-arteries, .arterioles


Which .type .of .blood .vessel .is .one .cell .layer .thick? .- .CORRECT .ANSWER-
capillaries

Which .type .of .blood .vessel .allows .the .exchange .of .materials .(active/passive
.transport)? .- .CORRECT .ANSWER-capillaries


What .allows .blood .to .travel .from .the .arteriole .to .the .venule .without .passing
.through .capillaries? .- .CORRECT .ANSWER-sphincters .(portal .system)


Does .the .blood .pressure .increase .or .decrease .when .more .capillary .beds .are
.closed? .- .CORRECT .ANSWER-increase


Where .do .portal .systems .both .begin .and .end? .- .CORRECT .ANSWER-capillary
.beds


What .are .two .examples .of .portal .systems? .- .CORRECT .ANSWER-mesentric
.capillaries .to .hepatic .portal .vein .to .hepatic .capillaries, .hypothalamus .capillaries
.to .portal .vein .to .anterior .pituitary .capillaries


Which .two .types .of .blood .vessels .have .valves? .- .CORRECT .ANSWER-veins,
.venules


Which .type .of .contraction .helps .venules .and .veins .move .blood .back .to .the
.heart? .- .CORRECT .ANSWER-skeletal


Which .type .of .blood .vessel .constricts .when .stressed? .- .CORRECT .ANSWER-
venules

, Which .blood .vessel .system .contains .half .of .the .blood .in .the .body? .- .CORRECT
.ANSWER-venous .system


Which .type .of .blood .vessel(s) .have .low .total .cross-sectional .areas? .- .CORRECT
.ANSWER-arteries, .veins


Which .type .of .blood .vessel(s) .have .high .velocity? .- .CORRECT .ANSWER-
arteries, .veins

Which .type .of .blood .vessel(s) .has .the .highest .total .cross-sectional .area? .-
.CORRECT .ANSWER-capillaries


Which .type .of .blood .vessel(s) .has .the .lowest .velocity? .- .CORRECT .ANSWER-
capillaries

Why .do .capillaries .have .the .lowest .velocity? .- .CORRECT .ANSWER-blood-tissue
.exchange


Which .type .of .blood .vessel(s) .has .the .highest .pressure? .- .CORRECT .ANSWER-
arteries

Which .type .of .blood .vessel(s) .has .the .lowest .pressure? .- .CORRECT .ANSWER-
veins

Which .specific .blood .vessel .has .the .highest .oxygen .content? .- .CORRECT
.ANSWER-pulmonary .vein


Which .specific .blood .vessel .has .the .lowest .oxygen .content? .- .CORRECT
.ANSWER-pulmonary .artery


Which .artery .supplies .the .heart .with .blood? .- .CORRECT .ANSWER-coronary

Which .artery .supplies .the .brain .with .blood? .- .CORRECT .ANSWER-carotid

Which .artery/vein .goes .to .the .arms? .- .CORRECT .ANSWER-subclavian

Which .vein .comes .from .the .head? .- .CORRECT .ANSWER-jugular

Which .artery/vein .goes .to .the .liver? .- .CORRECT .ANSWER-hepatic

Which .artery/vein .goes .to .the .intestines? .- .CORRECT .ANSWER-mesenteric

Which .artery/vein .goes .to .the .kidneys? .- .CORRECT .ANSWER-renal

Which .artery/vein .goes .to .the .legs? .- .CORRECT .ANSWER-iliac

Which .portal .vein .connects .the .mesenteric .capillaries .to .the .hepatic .capillaries?
.- .CORRECT .ANSWER-hepatic .portal .vein