Lymphatic system Flashcards
the only lymphatic organ with both afferent and efferent lymphatic vessels is
a lymph node
which of the following cells are involved in nonspecific defense but not in adaptive immunity? a. a helper T cells b. cytotoxic T cells c. natural killer cells d. B cells e. plasma cells
natural killer cells
the lethal hit is used by ___ to kill enemy cells
cytotoxic T cells
which of these is a macrophage? a. microglia b. a plasma cell c. a reticular cell d. a helper T cell e. a mast cell
microglia
which of these lymphatic organs has a cortex and medulla: 1. spleen 2. lymph node 3. thymus 4. red bone marrow
2 & 3 only
what cells form the blood- thymus barrier?
reticular epithelial cells
where do B cells attain immunocompetence?
in the red bone marrow
if not for the process of negative selection, we would expect to see more ___
autoimmune diseases
lymph nodes tend to be especially concentrated in all of these sites except ___. a. the cervical region b. the popliteal region c. the carpal region d. the inguinal region e. the mesenteries
the carpal region
all lymph ultimately reenters the blood stream at what point?
the subclavian veins
___ is a milky lymph, rich in fat, absorbed from the small intestine.
chyle
lymphatic vessels called ___ carry lymph from one lymph node to the next
collecting vessels
the two lymphatics that empty into the subclavian veins are the ___ on the right and the ___ on the left.
right lymphatic duct, thoracic duct
the latter duct in question 14 begins with a sac called the ___ below the diaphragm.
cisterna chyli
B cells become ___ cells before they begin to secrete antibodies
plasma
