Lab Practical 1 Flashcards
Lymphatic System
Return extracellular fluid to the veins; functions in disease control
Elastin - connective tissue of arteries of the cardiovascular system
Protein that allows for greater elasticity of tissues found in skin, lung, and artery tissue
Arteri-
artery
Cardi-
Heart
hemo-
blood
erythro-
red
-emia
blood
leuko-
white
vaso-
vessel
Collagen - connective tissue of arteries of the cardiovascular system
main structural protein which provides strength to tissues and gives protection to fragile organs
Tunica intima - a layer of arteries
The innermost coat or layer; consists of a continuous layer of endothelial cells that line the lumen and a layer of supporting connective tissue
Tunica media - a layer of arteries
The middle coat or layer consists of smooth muscle circularly arranged containing elastin - thicket layer
Tunica adventitia - a layer of arteries
Outermost layer: connective tissue containing elastin and collagen
Elastin (large) arteries
Thick-walled arteries near the heart and have a high proportion of elastin. Includes the aorta and its major branches
Muscular (distributing) arteries
Deliver blood to specific body organs that have high proportions of smooth muscle
Arterioles
The smallest arteries, with lesser proportions of smooth muscle and elastin
Capillaries
Endothelial cells that are covered with a basement membrane. Function in exchange of materials between the blood and tissue
Veins
Smooth muscle circularly arranged, more collagen, less elastin
Venules
Type of vein: much like capillaries but of larger diameter
Lymph Ducts
The extracellular fluid is returned to the heart via the lymphatic system. Contains thin-walled vessels with one-way valves
Right atrium (thinner)
Receives blood from the vena cava and moves it to the right ventricle
Right ventricle
Pumps blood from the right atrium to the pulmonary artery
Left atrium
Receives blood from the pulmonary veins and moves it to the left ventricle
Left ventricle
The largest heart chamber: pumps blood to the aorta from the left atrium