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GAP > heart 3 > Flashcards

heart 3 Flashcards

1
Q

Lymphatic Vessels

A

return lymph to veinous circulation

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1
Q

Lymph

A

excess fluid returned to the blood, important for immune function

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2
Q

capillaries

A

site of exchange of gases and nutrients

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3
Q

blood pressure is highest in the __

A

Aorta

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4
Q

Blood pressure is lowest in __

A

Vena Cava

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5
Q

Tunica Externa

A

outermost layer of the blood vessel

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6
Q

Tunica Media

A

middle layer w/smooth muscle
changes the size of lumen, altering flow and pressure

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7
Q

Tunica Interna (Endothelium)

A

innermost layer of simple squamous tissue

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8
Q

Lumen

A

hole that blood flows through

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9
Q

blood vessel structure in arteries

A

thicker in tunica media, narrow lumen
more elastic and collagen fibers to resist blood pressure changes

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10
Q

blood vessel structure in veins

A

thicker in tunica externa and larger lumen
if no blood it collapses

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11
Q

Blood vessel structure in capillaries

A

Tunica intima, connect arteries to veins, consist of endothelial layer and basement membrane for rapid exchange of gases and nutrients

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12
Q

Elastic Arteries

A

largest arteries, Aorta and major branches transport blood to muscular arteries

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13
Q

Muscular Arteries

A

Thicker tunica media, provide blood to organs

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14
Q

Arterioles

A

supply blood to capillary beds

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15
Q

blood flow in capillaries

A

one cell layer thick
red blood cells pass one at a time (rouleau)
precapillary sphincters control flow of blood through bed

16
Q

Venules

A

drain capillary beds, merge to form veins

17
Q

Systolic pressure

A

pressure during ventricular contraction

18
Q

Diastolic pressure

A

pressure during ventricular relaxation

19
Q

foramen ovalve

A

connects right atrium to left atrium

20
Q

Ductus arteriosus

A

connects pulmonary trunk to aorta

21
Q

ductus venosus

A

connect umbilical cord to inferior vena cava

22
Q

Shunt closure

A

first breath changes pressure gradients forcing closure

23
Q

first new born breath changes

A

ductus arteriosus–ligamentum arteriosum
foramen ovale– fossa ovalis
ductus venosus– ligament venosum

24
Q

Umbilical Arteries

A

carries deoxygenated blood from fetus to placenta

25
Q

umbilical vein

A

carries oxygenated blood from placenta to fetal heart

26
Q

Progression from heart

A

Elastic Arteries
Muscular Arteries
Arterioles
Capillaries
Venules

GAP (42 decks)

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