Arteries/Veins Flashcards
(23 cards)
Elastic (conducting arteries)
Largest artery that acts as a pressure reservoir for continuous blood flow
Muscular (distributing) artery
Better ability to constrict, not as elastic and distribute blood to specific parts of the body
Arterioles
Smallest arteries that transports blood into capillary beds and regulate blood flow to specific parts of body
Capillaries
Only contain tunica intima and they provide exchange of materials between blood and tissue cells
Venules
Smallest veins that drain capillary beds and merge to form veins
Veins
Low pressure vessels that return blood to heart
Tunica intima
Endothelium and subendothelium on veins plus internal elastic membrane of arteries
Tunica media
Smooth and elastic muscle fibers, arteries also have and external elastic membrane
Tunica externa
Collagen fibers with vaso vasorum
Blood circulation in fetus
Umbilical vein brings oxygen and nutrient rich blood to fetus from placenta and the umbilical artery brings blood waste from fetus back to placenta
Umbilical arteries become
Medial umbilical ligaments
Umbilical veins become
Ligamentum teres
Ductus venosus becomes
Ligamentum venosum
Foramen ovale becomes
Fossa ovalis
Ductus arteriosus becomes
Ligamentum arteriosum
Right and left coronary artery
Comes of ascending aorta branch and supplies myocardium of heart
Brachiocephalic trunk
Comes of aorta arch and supplies right carotid artery and right subclavian artery
Left common carotid artery
Comes off aortic arch and supplies left side of head and neck
Left subclavian artery
Comes off aortic arch and supplies left upper limb
Hepatic portal circulation
Blood vessels of hepatic portal system drain digestive viscera, spleen and pancreas and deliver this blood to liver for processing thru hepatic portal vein
Ductus venosus function
Carries blood into right atrium of heart
Foramen ovale function
Shunts blood from right atrium to left atrium
Ductus arteriosus function
Blood that doesn’t enter the right ventricle is pumped out of the pulmonary trunk and encounters this shiny connecting the pulmonary trust and aorta