CH22 exam 5
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CH22 exam 5
What CIRCUIT supplies the lungs with blood?
What circuit supplies the entire body except for the lungs with blood?
What kind of tiisue is ENDOTHELIUM?
What is the function of the TUNICA INTIMA?
What is the function of the TUNICA MEDIA?
allow vessel to change diameter
What is the function of the ADVENTITIA?
attach to deep fascia
How is the TUNICA MEDIA in ELASTIC ARTERIES?
modified to have a lot of elastic fibers for stretching, for large volumes of blood
How is the TUNICA MEDIA in MUSCULAR ARTERIES?
modified to have a lot of smooth muscle for vasoconstriction
How are the layers of ARTERIOLES?
poorly deifined adventitia
circular bands of discontinuous media
How are the layers of CAPILLARIES?
only have tunica intima
How are the layers of VENULES?
some lack media
thickest layer is adventitia
How are the layers of LARGE VEINS?
Complete the sentence:
Most blood is found in ______, making them the _____ ____ of the body.
veins, blood resivoir
Describe the DISTRIBUTION of vessels on the L and R sides of the body.
identical, except @ <3
What is the function of ANASTOMOTIC CONNECTIONS?
reduce impact of blockage of single vessel
How does blood get to the BRAIN?
by the internal carotid arteries and vertebral arteries
Where do the INTERNAL CAROTIDS pass through?
carotid canals and attach to circle of willis
How do the VERTEBRAL ARTERIES form the BASILAR ARTERY?
pass through transverse foramina
through foramen magnum
Describe BLOOD MOVEMENT through the VEINS.
constriction /relaxation of smoth muscle
skeletal muscle pump
Where is blood FILTERED before it goes out to the body?
How is blood FILTERED?
gastric, mesenteric, and splenic feed into hepatic portal
takes blood to liver
leaves through hepativ vein
to inferior vena cava
What is the function of the FORAMEN OVALE and the DUCTUS ARTERIOSUS?
to shunt blood away from the lungs
What does the FORAMEN OVALE become when it closes after birth?
the fossa avalis
What does the DUCTUS ARTERIOSUS become after birth?
What is the function of the DUCTUS VENOSUS?
shunt blood away from liver.
When is the supply of the DUCTUS VENOSUS cut off?
when imbilical vessels become the round ligament between the liver lobes