micro ch 23 - cardiovascular/ lymphatic systems

cardiovascular system

circulates blood through the body’s tissues

heart and associated veins, arteries, and capillaries

the cardiovascular system contains

delivers substancs to and removes substances from cells

what is the function of the cardiovascular system

buboes

swollen lymph nodes

plasma leaves capillaries to become interstitial fluid, lymph capillaries transport interstitial fluid to lymph vessels and lymph nodes. here, microorganisms and infectious agents are picked up

what happens in the lymphatic system?

fixed macrophages, B cells, and T cells

lymph nodes contain

septicemia

acute illness due to the presence of pathogens and their toxins in blood

sepsis

condition in which the body responds improperly to an infection

lymphangitis

inflamed lymph vessels

severe sepsis

decreased blood pressure and dysfunction of at least one organ

septic shock

sepsis and uncontrollable decreased blood pressure

gram negative sepsis (endotoxin shock)

endotoxins cause a severe drop in blood pressure, antibiotics can worsen the condition of the individual, neutralize LPS components and inflammatory-causing cytokines

gram positive sepsis

potent exotoxins that cause toxic shock syndrome, HAIs

endocarditis

inflammation of the endocardium

subacute bacterial endocarditis

impairs function of heart valves, alpha-hemolytic streptococci from an oral or tonsil infection

acute bacterial encocarditis

caused by S. aureus

pericarditis

inflammation of the sac around the heart, streptococci