Finals: Circulatory System Flashcards
What is the cell that lies close to the endothelium, contains actin & myosin and has contractile ability
Pericyte
What cell type lines the natural free surfaces of BV & the interior of the heart
Endothelial
What heart wall layer is mostly closely associated with pericardium
Epicardium
What type of BV has a thin wall compared to its lumen
Vein
What is the name of the membrane closely associated with tunica intima
External Elastic Membrane
What do capillaries lack that arteries and veins possess in their walls
Smooth muscle
What structure is located in the Right Atrium
SA node
What is the innermost layer of blood vessels
Tunica intima
The release of what substance during clot formation stimulates smooth muscles in arteries to contract
Thromboxane A2
A sinusoid is a type of what structure
Capillary
What is the name for the small blood vessels in the walls of blood vessels
Vasa vasorum
What structure in the kidney contains fenestrated capillaries
Glomerulus
What BV is heavily invested with elastic fibers
Aorta
What type of capillary is simple an epithelial tube with no basal lamina
Lymphatic
What layer of the heart wall contains the most cardiac muscles
Myocardium
What type of cell lines the external surface of the heart
Mesothelial
In general, in large vessels, where are the vasa vasora located
Tunica adventitia
What layer of the artery wall is the thickest
Tunica media
What chemical is released from nerve fibers that cause arterial constriction
Norepinephrine
In general, what do veins have that arteries don’t
Valves
What type of tissue comprises the annuli fibrosi
Connective tissue
What type of BV has a thick wall compared to its lumen
Artery
What membrane is associated with tunica intima
Internal Elastic Membrane
Sinusoidal capillaries are seen in the spleen, liver, & in what specific part of what other organ
Adenohypophysis
What layer of the heart contains endothelium
Endocardium
What type of fiber is observed in abundance among the smooth muscle fibers of the tunica media of the aorta
Elastic fibers
What layer of the wall of a large vein is most prominent
Tunica adventitia
What glycoprotein factor is part of the clotting mechanism
Von Wilberbrand factor
What type of BV is found in endocrine glands & tissues where absorption is occurring
Fenestrated capillaries
What is the DCT that comprises the skeleton of the heart
Annuli fibrosis
Prominent inner & outer elastic membrane are criteria for what type of blood vessels
Muscular artery
What is the pacemaker of the heart
SA node
What BV controls blood flow into a capillary
Arteriole
What major BV has a poorly developed tunica media & a thick tunica adventitia rich in elastic fibers
Vena cava
What type of artery is the aorta
Elastic artery
Where is Von Willebrand factor stored in the endothelial cell
Weibel-palade bodies
What layer of the vessel wall contains primary longitudinally arranged collagen fibers & nervi vascularis
Tunica adventitia
