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Anatomy Q3

Blood Vessels/Aortic Branches

TermDefinition
hematology the study of the blood
cardiology the study of the heart
angiology the study of blood vessels
arteriology the study of arteries
phlebology the study of veins
tunica intima (tunica interna) -inner layer -endothelium -smooth surface
tunica media -middle layer -smooth muscle tissue -constrict/dilate
tunica externa (tunica adventitia) -outer layer -connective tissue -support vessel -- anchors to other structures
blood vessels in order from the heart back to the heart 1. arteries 2. arterioles 3. capillaries of the capillary beds 4. venules 5. veins
anastomoses occur normally in the body in the circulatory system, serving as backup routes for blood to flow if one link is blocked or otherwise compromised; collateral circulation
vasa vasorum the network of smaller vessels that supply the cells that make up the outer layer of a blood vessel; provide the vessel wall that they penetrate with metabolites which they would otherwise not receive due to the thickness of the layers making up the wall
Pulmonary Circuit: pulmonary trunk exits the right ventricle
Pulmonary Circuit: pulmonary arteries branch from the pulmonary trunk
Pulmonary Circuit: lobar arteries branch from the pulmonary arteries to lungs; 3 right, 2 left
Pulmonary Circuit: pulmonary veins return oxygen rich blood to the heart and empty into the left atrium; 2 right, 2 left; the only veins that are oxygen rich
Systemic Circulation: systemic arteries carry oxygenated blood away from the heart
aorta largest artery in the body
Systemic Circulation: aorta vessel leaving the left ventricle
ascending aorta ascends from the left ventricle; branches include the right & left coronary arteries
aortic arch lies posterior to the manubrium of the sternum
three branches of the aortic arch 1. brachiocephalic 2. left common carotid 3. left subclavian
brachiocephalic trunk (brachiocephalic artery, innominate artery) an artery of the mediastinum that supplies blood to the right arm and the head and neck; 1st branch of the aortic arch; divides into the right common carotid artery and the right subclavian artery
left common carotid artery an artery that supplies the left side of the head and neck with oxygenated blood; divides in the neck to form the external and internal carotids
left subclavian artery a major artery of the upper thorax that mainly supplies blood to the head and arms
branches of the left subclavian artery 1. vertebral artery 2. internal thoracic artery 3. thyrocervical trunk 4. costocervical trunk
vertebral artery main blood supply to the posterior portion of the brain
internal thoracic artery supplies the anterior chest & breast
thyrocervical trunk supplies the thyroid & neck
costocervical trunk supplies the superior intercostals & neck
descending aorta continues from the aortic arch & divides into the thoracic aorta & abdominal aorta
parietal branches of the descending aorta supply the walls
visceral branches of the descending aorta supply the organs
posterior intercostal arteries supply blood to the intercostal spaces; continuous with the anterior intercostal arteries 1. parietal 2. thoracic 3. paired (9 pairs) 4. supply intercostal spaces
subcostal arteries lie below the last ribs, constitute the lowest pair of branches derived from the thoracic aorta, and are in series with the intercostal arteries 1. parietal 2. thoracic 3. paired (1 pair) 4. supply area below 12th rib
superior phrenic arteries small arteries that arise from the lower part of the thoracic aorta; they are distributed to the posterior part of the upper surface of the diaphragm 1. parietal 2. thoracic 3. paired 4. posterior part of upper surface of diaphragm
esophageal arteries *4 or 5 in number 1. visceral 2. thoracic 3. unpaired 4. supply the esophagus
bronchial arteries 1. visceral 2. thoracic 3. unpaired 4. supply blood to the bronchi & connective tissue of the lungs
inferior phrenic arteries 1. parietal 2. abdominal 3. paired 4. supply the diaphragm
lumbar arteries 1. parietal 2. abdominal 3. paired 4. lumbar vertebrae
median sacral artery 1. parietal 2. abdominal 3. unpaired (only 1 artery) 4. supplies the sacrum
middle suprarenal arteries 1. visceral 2. abdominal 3. paired 4. supply the adrenal glands
renal arteries 1. visceral 2. abdominal 3. paired 4. supply the kidneys
gonadal arteries 1. visceral 2. abdominal 3. paired 4. supply the testicles or ovaries
celiac trunk the first major branch of the abdominal aorta; branches from the aorta around the level of the T12 vertebra 1. visceral 2. abdominal 3. unpaired 4. supplies the digestive system
branches of the celiac trunk: left gastric artery arises from the celiac trunk & runs along the superior portion of the lesser curvature of the stomach 1. visceral 2. abdominal 3. unpaired 4. supplies the stomach & esophagus
branches of the celiac trunk: splenic artery 1. visceral 2. abdominal 3. unpaired 4. supplies the spleen
branches of the celiac trunk: common hepatic artery 1. visceral 2. abdominal 3. unpaired 4. supplies the liver, pylorus, duodenum, and pancreas
hepatic liver
mesenteric intestines
superior mesenteric artery 1. visceral 2. abdominal 3. unpaired 4. supplies the small intestine & proximal region of the large intestine
inferior mesenteric artery 1. visceral 2. abdominal 3. unpaired 4. supplies the distal portion of the large instestine
Created by: leahmurphy