Which statements describe the structure of lymphaticcapillaries?
-Lymphatic capillaries have a layer of smooth muscle in theirwalls.
-Collagen filaments anchor the endothelium to loose connectivetissue.
-The endothelial cells are not tightly joined together.
-Lymphatic capillaries are part of a closed circuit.
Which of the cells are lymphoid cells (lymphocytes)?
-B cells
-antigens
-helper T cells
-hematopoietic stem cells
Which leukocyte can destroy microorganisms and remove celldebris?
-plasma cell
-dendritic cell
-macrophage
-T lymphocyte
Which is a function of lymph nodes?
-to filter out toxins, such as alcohol
-to store platelets
-to filter out old, damaged red blood cells
-to filter out foreign material and cell waste
What is the lymph‑related function of the appendix?
-secretes lipases that break down triglycerides
-connects the small intestine to the lymph nodes
-removes excess fluid from the small intestine
-protects the intestines from foreign antigens
