Chap 20/21 - Lymphatic system

If thymus failed to produce thymus hormones, which population of lymphocytes would be affected

T lymphocytes

which of the following is not a function of the lymphatic system

draining blood into the right atrium

what type of immunity is affected by the decrease in cytotoxic T cells

cell-mediated immunity

what is a function of the spleen

a fragile organ that can rupture easily, and a site where RBCs are recycled

lymphatic vessels…

collect excess fluid from interstitial spaces

how are lymphatic capillaries permeable

minivalves in their walls

which of the following contribute(s) to the flow of lymph through lymphatic vessels

milking action of a skeletal muscle contraction and pressure changes in the thorax that result from breathing

which of the following would the body perceive as an antigen

all of the above

which of the following is the largest lymphoid organ

spleen

function of thymus

T lymphocyte maturation

which of the following is not a contributor to specific immunity

natural killer cells

which of the following is not a mechanical barrier to pathogen invasion

interferon

where are macrophages derived from

monocytes

what is it called when there is an increase in WBC characteristic of inflammation

leukocytosis

what is the process in which phagocytes exit capillaries and enter injured tissue called

diapedesis

the basis of immunity is the presence of which cells

memory

which of the following classes of antibodies can cross the placenta

IgG