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The blood that has been pumped throughout the body eventually returns to the heart, entering at either the superior or inferior ______ ______.
Blood leaves the right ventricle, and goes into the _______ _______, which subsequently branches into arteries that carry deoxygenated blood to the lungs.
The outermost layer of a blood vessel is called the tunica _______, its mainly composed of fibrous connective tissue.
The middle layer of blood vessels, thats mostly smooth muscle and elastic fibers is called the tunica ________.
The tunica ________, which lines the interior or "lumen" of a blood vessel, is a thin layer of endothelium resting on a basement membrane.
The visceral layer of the heart is called the __________, which is actually part of the heart wall.
What is the pressure that blood exerts against the inner walls of the blood vessels called?
The amount of friction that blood encounters as it flows through the blood vessels is called ________ ________.
Tissue grafts donated by a genetically identical person - an identical twin - are called what?
Tissue graft transplanted from one site to another in the same person is called an _________.
skin, mucous membranes
The bodys first line of defense agains disease causing microorganisms would be the ____ and ______ _______.
The skins __________ epidermis is a strong physical barrier to most microorganisms that swarm on the skin.
active naturally aquired
Having an infection - direct contact with the pathogen - is an example of what form of acquired immunity?
passive naturally aquired
Antibodies passing from mother to fetus via placenta, or infant to mother via breastmilk is what form of immunity?
passive artificially aquired
An injection of immune serum, gamma globulin, is what form of immunity?
________ is the chief antibody ammunition used against cellular antigens, such as bacterial of mismatched RBC.
________ occurs when antibodies bind to specific sites on bacterial endotoxins. They block the harmful effects of the endotoxin or virus.
This type of antigen-antibody reaction occurs when mismatched blood is transfused and is the basis of tests used for blood typing.
When antigen-antibody complexes are so large that they settle out of the solution, it is called _____.
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