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the part of the pericardium that is composed of inelastic, dense irregular connective tissue prevents overstretching of the heart, provides protection, and anchors heart to mediastinum and diaphragm
the part of the pericardium that is thinner, more delicate. It forms a double layer around the heart and has lubricating pericardial fluid.
R atrium > R ventricle > Pulmonary trunk/arteries > lungs > Pulmonary veins > Left atrium > L ventricle > aorta > body > vena cava > repeat
The order of blood flow
SA Node > AV Node > AV Bundle > Bundle Branches > Purkinje Fibers
the path of the action potential in the heart
The Frank Starling Law of the Heart states that the more the heart fills with blood during diastole, the ______ the force of contraction during systole
increased preload, increased contractility, decreases afterload
what are the three factors involved in regulation stroke volume?
red bone marrow, thymus, spleen, lymph nodes
what are the main organs involved in the lymphantic system?
this part of the spleen consists of lymphatic tissue. It functions to allow B and T cells to carry out immune functions and spleen macrophages destroy blood-borne pathogens
this part of the spleen consists of venous sinuses and splenic cords. It functions to remove worn out or defective blood cells, store platelets, hemopoiesis
In the lymphatic system, the skin and mucous membranes form the ____ line of defense in nonspecific resistance
In the lymphatic system, antimicrobial proteins, NT killer cells, phagocytes, and other internal defenses form the ____ line of defense in nonspecific resistance
the type of specific resistance that is effective against intracellular pathogens, some cancer cells, foreign tissue. Antigens activate T cells to attack threat.
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