(T/F) : the thymus is most prominent in newborns and begins to atrophy after puberty
true
the lymphatic system is a/an ____ ended system
open
where does the lymphatic system begin?
interstitial space
the right lymphatic duct drains the _______ half of the body
upper right
where does the right lymphatic duct empty into?
right subclavian vein
the _______ duct drains majority of the body
thoracic (left lymphatic)
where does the left lymphatic (thoracic) duct empty into?
left subclavian vein
lymph nodes are clustered where
joints
what do lymph nodes produce
lymphocytes
what are lymphocytes
white blood cells that destroy bacteria
what kind of infections are transmitted in hospitals
nosocomial
nonspecific immunity can also be called _____ or natural immunity
innate
when intact, the _____ is virtually impermeable to microorganisms
skin
saliva contains an enzyme called ______ that is antibacterial
lysozyme
sneezing or coughing removes microorganisms from the respiratory tract and are considered _______ immunity
innate
what is it called when the immune system becomes overactive ?
hypersensitivity or allergy
a sequence of events that involves chemical and cellular activation that destroys pathogens and aids in repairing tissues is called
inflammatory response
contagious viral infection that occurs most commonly in teenagers and young adults; affects the lymphocytes
infectious mononucleosis
any cancer in lymphoid tissue that is not classified as hodgkin’s disease
non-Hodgkin’s lymphoma
painless, swelling of the lymph nodes, primarily in the neck and groin
Hodgkin’s disease
an increase in tissue fluid caused by inflammation or obstruction by scar tissue, parasites, or trauma
lymphedema
a tumor of the lymphatic system that is almost always malignant
lymphomata
cancer of the white blood cells in which the body produces abnormal cells at a faster rate than normal
leukemia
what is lymph
fluid derived from interstitial fluid; returns leaked plasma proteins and transports fats to the bloodstream
