HTHSCI 1H06 B Lecture Notes - Lecture 4: Tunica Media, Vasoconstriction, Collagen
22 Jun 2018
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VASCULATURE
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Aorta :4 Principle Divisions
•
Ascending aorta
-comes Hot left ventricle
-Rtl coronary arteries :supply blood to The myocardium
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Arch of aorta
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arches over the bifurcation of the pulmonary trunk
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Brachiocephalio trunk
>Rcommon carotid ,Rsnbclavian
-Lsnbdavidh
-
Lcarotid
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Thoracic aorta :portion of descending aorta thats above the diaphragm
Pericardium lntcrcostaltchett muscles
esophagus Mammary gland
bronchi skin
diaphragm Vertebrae +Spinal cord
•
Abdominal aorta :portion of descending aorta thats below the diaphragm
Abdominal +pelvic viscera lower extremities
Abdominal Aorta Branches
•Unpaired arteries which supply the Gltraot Celiac Artery
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Paired arteries are on both sides
Liver
spleen
Pancreas Stomach
Duodenum
Superior +Inferior Mesenteric
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Superior mesenteric
suprarenal
supplies pancreas,
small intestine ,
and part of large
Intestine
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Inferior mesenteric
supplies the rest of
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Gonads start in abdominal cavity but descend towards reproductive organs the large intestine
Common
•Common iliac branches into internal + external iliacs iliac
veins
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Superior vena cava
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Head ,neck ,chest t upper limbs
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coronary sinus
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Great Cardiac vein
,middle cardiac vein ,small cardiac vein
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Inferior vend cava
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Abdomen ,pelvis ,and lower limbs
Abdominal and Pelvic veins
Liver
Hepatic Portal system
•
portal vein :avein that can allow blood to transport from
one capillary network to another
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Venous blood from Gl organs and spleen go to the liver to
be processed before going to the inferior vena cava and then
the heart
Connect arterial system
Blood Vessels with
,
venous system
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Arteries :the largest vessels which carry blood away from the heart
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Artery →Arterioles →capillaries -
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Capillaries :site of gas exchange ,nutrient exchange +waste removal
•Veins :return blood to the heart
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Capillaries →Venues →veins
Arteries
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i. epressure vessels
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Tunica lntima -endothelium →honthwmbogenio
basement membrane →structural support
internal elastic lamina →allows molecules to pass
into Mhica media
•Tunica Media -smooth muscle cells →allow arteries to contract +
dilate
elastic fibers
external elastic lamina
Document Summary
Rtl coronary arteries supply blood to the myocardium. Arch of aorta arches over the bifurcation of the pulmonary trunk. : portion of descending aorta thats above the diaphragm. + pelvic portion of descending aorta lower viscera thats below the diaphragm extremities. Superior mesenteric supplies pancreas , small intestine and part of large. Inferior mesenteric supplies the rest of the large intestine. Gonads start in abdominal cavity but descend towards reproductive organs. Head neck , chest t upper limbs coronary sinus. Great cardiac vein middle cardiac vein , small cardiac vein. Hepatic portal system portal vein : a vein that can allow blood to transport from one capillary network to another. Venous blood from gl organs and spleen go to the liver to be processed before going to the inferior vena cava and then the heart. Connect arterial system with venous system blood away from the heart. Capillaries : site of gas exchange , nutrient exchange + waste removal.
