#1
What are vessels that carry blood away from the heart?
Arteries
______ is an artery carrying oxygen-poor blood from the heart to the lungs
Pulmonary Artery
What is the central blood-filled space of a vessel, surrounded by tunics?
Lumen
Most arteries carry oxygen rich or oxygen poor blood?
Oxygen rich blood
______ are the spider-shaped cells who form a network around the periphery of the capillary and serve to strengthen and stabilize the capillary.
Pericytes
The walls of most blood vessels are composed of these three distinct layers.
What are the tunics from external to internal?
Tunica intima, tunica media, and tunica externa (tunica adventitia).
Tunica Externa (or adventitia), tunica media, and tunica intima.
The arterial system is composed of three things. What are they?
Elastic arteries, muscular arteries, and arterioles.
What is a network of capillaries, which run throughout most tissues....especially the loose connective tissues, location of exchanges?
Capillary Beds
What are the three types of Blood Vessels?
Give me the flow of blood through the vessels.
Arteries, Capillaries, and Veins.
Heart, arteries, arterioles, capillaries, venules, veins, heart.
The ___________________ through the arteries proceeds from elastic arteries, to muscular arteries, to arterioles.
Passage of blood
True or False: capillaries renew and refresh interstitial fluid with oxygen nutrients cells need, and removes carbon dioxide and nitrogenous wastes that cells deposit into the fluid.
True
_______ is a simple squamous epithelium in the innermost tunic that forms a smooth surface that minimizes the friction of blood moving across them
Endothelium
______ is composed of smooth muscle cells, wrap around the root of each true capillary where it leaves the metarteriole
Precapillary Sphincters
What are the 3 types of capillaries?
Continuous, fenestrated, and sinusoidal
______ provide alternate pathways (collateral channels) for blood to reach a given body region-If one branch is blocked, the collateral channel can supply the area with adequate blood supply (thoroughfare channels are examples of arteriovenous anastomoses)
Arterial Anastomoses
What merging blood vessels, more common in veins than arteries?
Vascular Anastomoses
______ are the blood vessels that conduct blood from the capillaries toward the heart
Veins
Because blood pressure in the venous part of the circulation is much lower than in the arterial part...the walls of veins are much _____________ than those of comparable arteries.
Thinner
_______ is the contraction of the smooth muscle cells decreases the diameter of the vessel.
_______ is the relaxation of the smooth muscle cells increases the vessel's diameter.
Vasoconstriction
Vasodilation
What are the simplest veins that are formed when capillary beds unit?
Venules