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39 terms

anatomy of blood vessels

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artery
thin tunica externa
artery
thick tunica media
artery
narrow and regular tunica intima
vein
thick tunica externa
vein
thin tunica media
vein
irregular tunica intima
tunica intima
layer of endothelium
tunica media
layer of smooth muscle and elastic fibers
tunica externa
layer of collagen fibers
tunica intima
innermost tunic
tunica externa
most superficial tunic
tunica intima
thin tunic of capillaries
tunica media
specially thick in elastic arteries
tunica media
contains smooth muscle and elastin
tunica intima
has a smooth surface to decrease resistance to blood flow.
veins need valves to create pressure to pump the blood to the heart. valves assist in returning venus blood to the heart.
why are valves present in veins but not in arteries
muscular pump (milking action of skeletal muscle) and respiratoy pump (thoraxic cavity pressure)
name two events occurring within the body that aid in venous return
because arteries are closer to the pumping action of the heart, their walls must be strong enough to take the changes in pressure.
why are the walls of arteries proportionately thicker than those of the corresponding veins
brachiocephalic
the arterial system has one of these, the venous system has two.
coronary arteries
these arteries supply the myocardium
internal carotid and vertebral
two paired arteries serving the brain
great saphenous
longest vein in the lower limb
dorsalis pedis
artery on the dorsum of the foot checked after leg surgery
deep artery of the thigh
serves the posterior thigh
phrenic
supplies the diaphragm
brachial
formed by the union of the radial and ulnar veins
basilic and cephalic
two superficial veins of the arm
renal
artery serving the kidney
hepatic
veins draining the liver
inferior mesenteric
artery that supplies the distal half of the large intestine
internal iliac
drains the pelvic organs
femoral
what the external iliac artery becomes on entry into the thigh
brachial
major artery serving the arm
superior mesenteric
supplies most of the small intestine
common iliac
join to form the inferior vena cava
celiac trunk
an arterial trunk that has three major branches, whic run to the liver, spleen and stomach
external carotid
major artery serving the tissues external to the skull
anterior tibial, fibular and posterior tibial
three veins serving the leg
radial
artery generally used to take the pulse at the wrist