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the largest single mass of lymphatic tissue in the body, measuring about 12 cm (5 in.) in length. It is located in the left hypochondriac region between the stomach and diaphragm
spleen
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types of sinuses
Subcapsular sinus… Trabecular sinus… Medullary sinus
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From the afferent lymphatic vessels, lymph flows into the _____, immediately beneath the capsule
subcapsular sinus
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which extend through the cortex parallel to the trabecular
trabecular sinus
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which extend through the medulla
medullary sinus
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route of lymph flow in nodes
Afferent lymphatic vessel… Subcapsular sinus… Trabecular sinus… Medullary sinus… Efferent lymphatic vessel
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B cells and T cells carry out immune functions, similar to lymph nodes, while spleen macrophages destroy blood-borne pathogens by phagocytosis.
function of white pulp
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masses of lymphatic tissue that are not surrounded by a capsule; are scattered throughout the lamina propria (connective tissue) of mucous membranes lining the gastrointestinal, urinary, and reproductive tracts and the respiratory airways
lymphatic nodules
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1) removal by macrophages of ruptured, worn out, or defective blood cells and platelets; (2) storage of platelets, up to one-third of the body's supply; and (3) production of blood cells (hemopoiesis) during fetal life
function of red pulp
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line body cavities, secretes a fluid called mucus that lubricates and moistens the cavity surface
skin and mucous membranes
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