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Microscopic Structure of the Blood Vessels
l.Usetlrekeychoicestoidentifythebloodvesseltunicdescribed.
Key:
tunica externa
tunica media
tunica iatima
1. most internal tunic
2. bulky middle tunic contains smooth muscle and elastin
tfilrAn tXh)iWt3. its smooth surface decreases friction
I i'u{ iwr 4. runic or capinaries
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5. tunic(s) of
arteries and veins
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6. tunic that is especially thick in
arteries
7. most suPerficial tunic
circulatory system' Explain tnis
servicing the capiilaries is the basic function of the organs of the
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c.o.s-s"Jctional views of an artery
ad of a vein
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related questions th:
are shown he.re. Identify each. Also respond to the
fbllow
lVhich of these vessels may have valves?
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along?
Which ol these vessels depen<ls <ln its elasticity to propel blood
55
Review Sheet
tl"re
walls of arteries relatively thicker than those of the corresponding veins?
Major Systemic Arterier and Veins of the Body
Key:
1. the arterial system has one
of these; the venous system has two
anterior tibial
basilic
2. these arteries supply tbe myocardium
3. the more anterior artery pair serving the brain
'4
cephalic
5. artery on the foot checked after leg surgery
6. serves the posterior thigh
8. formed by the union of the radial and ulnar veins
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common carotid
common iliac
coronary
deep femoral
7. supplies the diaphragm
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brachiocephalic
celiac trunk
4. bng"rrvein in the body
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brachial
t '
9. two superficial veins of the arm
dorsalis pedis
external carotid
femoral
gonadal
^
lo. artery serving thekidney
I 1. testicular or ovarian veins
autery that supplies the distal half of the large intestine
13. drains the
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pelvic organs and lower limbs
great saphenous
inferior mesenteric
internal carotid
internal iliac
fibularis
phrenic
.
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14. what the extemal
iliac vein drains into in the pelvis
15. major artery serving the arm
ropplies most of the small intestine
17. rvhat the i'emoral artery becomes at the knee
popliteal
ppsterior tibial
radial
renal
subclavian
superior mesenteric
18. an arterial trunk that has three major branches. which run to the
Iil'er, spleen, and stomach
19. major artery serving
ttTsnin and scalp of the head
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that join.
forming the popliteal vein
20. rwn
two rzcine
21. uterygeneralty used to take the putse at the wrist
Review Sheet
z.
page and the next. Identiff all indicated blood vessels'
The human arterial and venous systems are diagrammed on this
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57
Review Sheet
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58
Review Sheet
3.
Trace the blood flow for the
following situations:
a.
From the capillary beds of the left thumb to the capillary beds of the right thumb
b.
From the pulmonary vein to the pulmonary artery by way of the right side of the brain
Special Circulations
Pulmonary circulation:
l.
Trace the pathway of a carbon dioxide gas molecule in the blood from the inferior vena cava until it leaves the bloodstrear
Name all structures (vessels, heart chambers, and others) passed through en route.
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2.
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Truce the pathway of an oxygen gas molecule from an alveolus of the
tures through which
it
passes.
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heart. Name all strur
59
Review Sheet
3. Most
arteries of the adult body carry oxygen-rich blood, and the veins carry oxygen-depleted, carbon dioxide-rich blood.
What is different about the pulmonary arteries and veins?
4.
What is the source of blood in the
Why is this blood carried to the liver before it enters the systemic circulation?
6.
The hepatic portal vein is formed by the union of the
ich drains the
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(vla the lntenor
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which drains the
fy"
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and
vein, which drains the lesser curvarure
of the stomach, empties directly into the hepatic portal vein.
7.
Trace the flow of a drop of blood from the small intestine to the right atrium of the hea-rt, noting all structures encountered
or passed tfuough on the way
Arterial supply of the brain and the circle of Willis:
8.
Branches ofthe internal carotid and vertebral arteries cooperate to form a ring of blood vessels encircling the pituitary gland,
at the base of the brain. What name is given to this communication network?
what
is
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9.
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t
Both the anterior and middle cerebrai aderies arise fiom the
arteries
10. Trace the usual pathway of a drop of blood from the aorta to the left occipital lobe of the brain, noting all structures through
which it flows. Aorta
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Review Sheet
Fetalcircuration:
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1. The failure of two of the fetal
bypass structures to become obliterated after birth can cause congenital heart disease, in which
the yolmgster would have improperly oxygenated blood. Which two structures are these?
12. For each of the following structures, indicate its function in the fetus. Circle the blood vessel that carries the most oxygenrich blood.
Functlon in fetus
Structurc
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Umbilical artery
Umbilical vein
Ductus venosus
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Ductus arteriosus
Foramen ovale
13. What organ serves
Cred its
ILI.UTIRATIOI{'
2,3. Imagineering
:/ur*bg
as a respiratory/digestive/excretory organ
for the fetus?
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