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Cardiovascular System: Anatomy, Physiology, and Circulation, Quizzes of Biology

Definitions and descriptions of key terms related to the structure and function of the cardiovascular system, including arteries, arterioles, capillaries, venules, veins, tunica intima, tunica media, tunica adventitia, vasoconstriction, vasodilation, aneurysm, capillary beds, pre-capillary sphincter muscle, fenestrated capillaries, continuous capillaries, veins, fetal circulation, umbilical arteries, umbilical veins, foramen ovale, and ductus arteriosus.

Typology: Quizzes

2012/2013

Uploaded on 11/20/2013

shannon-keene17
shannon-keene17 🇺🇸

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TERM 1
direction of blood flow
DEFINITION 1
arteries - arterioles - capillaries - venules - veins
TERM 2
arterioles
DEFINITION 2
microscopic branches off of arteries
TERM 3
capillaries
DEFINITION 3
narrowest of all blood cells (RBCs single file)so thin that
oxygen/nutrients can exit to supply tissues
TERM 4
venules
DEFINITION 4
come together into veins
TERM 5
veins
DEFINITION 5
return blood to heart, larger in diameter when going
downstream
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direction of blood flow

arteries - arterioles - capillaries - venules - veins

TERM 2

arterioles

DEFINITION 2

microscopic branches off of arteries

TERM 3

capillaries

DEFINITION 3

narrowest of all blood cells (RBCs single file)so thin that

oxygen/nutrients can exit to supply tissues

TERM 4

venules

DEFINITION 4

come together into veins

TERM 5

veins

DEFINITION 5

return blood to heart, larger in diameter when going

downstream

tunica intima

lines lumen of blood vessellayer blood flows against

(slippery)made of simple squamous epithelium

(endothelium)"deepest layer"

TERM 7

tunica media

DEFINITION 7

middle muscular layer

TERM 8

tunica adventitia

DEFINITION 8

outer layer of connective tissue that holds everything

together

TERM 9

vaconconstriction

DEFINITION 9

narrowing of the lumen because muscle in wall contracts

TERM 10

vasodilation

DEFINITION 10

when muscle in wall relaxes and lumen enlarges

continuous capillary

not leaky at allcells in wall are tightly bound together

TERM 17

veins

DEFINITION 17

1. low pressure: thin wall because of low pressure blood

flow2. valves: designed to minimize any back flow3. varicose

veins: overly distended veins (distorted)

TERM 18

Fetal circulation

DEFINITION 18

occurs in the umbilical cord with umbilical arteries and veins

TERM 19

umbilical arteries

DEFINITION 19

2 - carry blood from the fetus to the placentabranches off of

fetus's internal iliac arteries

TERM 20

umbilical veins

DEFINITION 20

1 - takes oxygen rich blood from placenta back to fetusenters

through umbilicus

foraman ovale

hole in septum between 2 atria in a fetal heartdiverts blood

flow into body instead of into collapsed

TERM 22

ductus arteriosus

DEFINITION 22

passageway between pulmonary trunk and aortaanother way

to divert blood away from lungs