Arteries
What are the 3 layers of the blood vessel wall?
Tunica interna
Tunica media
Tunica externa
What are the precapillary blood vessels called?
Arterioles
What is the main artery that comes off of the top of the heart?
Aorta
True or False: The heart initally develops in the fetus with the atria at the top.
False. The atria are formed on the bottom and then migrate to their final location.
What is a sinus?
A vein with a thin endothelial wall and no smooth muscle.
The largest arteries are considered what?
Elastic Arteries
What are the postcapillary blood vessels called?
Venules
What is the main vein that feeds the heart?
The aorta (Ascending & Descending)
What layer makes up 95% of the heart?
The myocardium
True or False: The subclavian vein is used for central lines.
True. (eg. PICC lines)
What are the medium size arteries in the body called?
Muscular arteries
What is the structure that regulates flow into the capillary?
Precapillary sphincter
What is the procedure of unblocking a coronary artery with a catheter?
Angioplasty
The left ventricle
True or False: All veins have valves.
False. Sinuses
What is an artery that is not connected to other arteries by anastomoses or the anastomosis is not sufficient?
End arteries.
Portal system.
Hepatic portal system.
Hypophyseal portal system.
What vessel does most blood drain into on the heart?
What does systole mean?
Contractiob of the ventricles OR the atria
What is the name of the vein that connects two capillary beds?
Portal vein.
What is the terminal end of an arteriole called?
What is a thoroughfare channel?
A direct route from the arteriole to the venule.
What artery wraps around the left side of the heart between the left auricle and ventricle?
The circumflex branch
Where are the purkinje fibers located?
Spreading along the ventricular walls.
What is the cause of varicose veins?
Leaky venous valves that allow backflow into superficial veins.