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Which statements describe the structure of lymphatic capillaries? -Lymphatic capillaries have a layer of smooth muscle in...

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Biology

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

Answer & Explanation Solved by verified expert
4.5 Ratings (634 Votes)
1 ans option b Collagen filaments anchor the endothelium to loose connective tissue is the correct answer Explaination b Collagen filaments appear as individual units or aggregated into bundles that are disposed parallel to the long axis of the lymphatic capillary wall and extend for long distances into the adjoining connective tissue Interstitial fluid slips through spaces between the overlapping endothelial cells that compose the lymphatic capillary Collagen fibers anchor a lymphatic capillary in the connective tissue a Lymphatic capillaries have a layer of smooth muscle in their walls Lymphatic capillaries do not contain smooth muscle nor do they have a well developed adventitia only small elastic filaments that perform a similar function c The endothelial cells are not tightly joined together Intercellular junctions mediate adhesion and communication between adjoining endothelial and epithelial cells In the endothelium junctional complexes comprise tight junctions adherens junctions and gap junctions d    See Answer
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