2 What are lymph nodes?A mass of lymphatic tissue that helps remove bacteria, tumor cells, etc…
3 What is lymph?The watery fluid in the lymph vessels collected from the tissue spaces.
4 List four lymphoid organs. spleenthymus glandtonsilsPeyer's patches
5 List four mechanisms that aids lymph return: milking action of skeletal musclespressure changes within the thoraxsmooth muscle contractions within the lymphatic vesselspresence of valves within the larger lymph vessels
6 What organ Filters and cleanses the blood of bacteria, viruses, and other debris Spleen
7 What lymph organ programs T cells and functions at peak levels only during youth is the Thymus
8 The body's first line of defense against the invasion of disease-causing microorganisms is: skin and mucous membranes
9 The process by which neutrophils are squeezed through the capillary walls during the inflammatory process is called:diapedesis
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