14) Which of the following maintains the patency (openness) of the trachea? A) surface tension of...

 

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14) Which of the following maintains the patency (openness) of the trachea? A) surface tension of water B) surfactant C) cartilage rings D) pseudostratified ciliated columnar epithelium E) trachealis muscle 15) True/False Lymph always flows away from the heart 16) Which of the following is not a major source of the lymphatic return mechanism? A) margination B) pressure changes in the thorax during breathing C) pulsations of nearby arteries to the lymphatic vessels D) skeletal muscle contractions E) smooth muscles in the walls of lymphatic trunks contracting rhythmically 17) True/False Simply put, circulation of lymph through a lymph node is slowed due to the fact that there are more afferent vessels entering the node than efferent vessels leaving the node 18) When the lymphatic delivery system is totally occluded due to a tumor, what would be the expected result? A) shrinkage of tissues distal to the blockage due to inadequate delivery of lymph B) severe localized edema distal to the blockage C) abnormally high lymph drainage from the distal area D) no change due to the fact that the lymphatic system is a low pressure system 19) True/False As long as there are no breaks in the heavily keratinized epithelial barrier known as skin, it will provide an effective barrier against bacteria. 20) Which of the following is not associated with lymphoid tissue? A) houses and provides a proliferation site for lymphocytes B) acts as an ideal surveillance point for lymphocytes and macrophages C) is composed of a loose reticular connective tissue D) located in the Peyer's patches in intestinal walls E) all of the above are associated with lymphoid tissue 21) What is the name of the polypeptide hormone produced by the parafollicular cells of the thyroid gland that targets the skeleton and inhibits osteoclast activity? A) chief cells B) parathormone C) calcitonin D) renin E) altosterone 14) Which of the following maintains the patency (openness) of the trachea? A) surface tension of water B) surfactant C) cartilage rings D) pseudostratified ciliated columnar epithelium E) trachealis muscle 15) True/False Lymph always flows away from the heart 16) Which of the following is not a major source of the lymphatic return mechanism? A) margination B) pressure changes in the thorax during breathing C) pulsations of nearby arteries to the lymphatic vessels D) skeletal muscle contractions E) smooth muscles in the walls of lymphatic trunks contracting rhythmically 17) True/False Simply put, circulation of lymph through a lymph node is slowed due to the fact that there are more afferent vessels entering the node than efferent vessels leaving the node 18) When the lymphatic delivery system is totally occluded due to a tumor, what would be the expected result? A) shrinkage of tissues distal to the blockage due to inadequate delivery of lymph B) severe localized edema distal to the blockage C) abnormally high lymph drainage from the distal area D) no change due to the fact that the lymphatic system is a low pressure system 19) True/False As long as there are no breaks in the heavily keratinized epithelial barrier known as skin, it will provide an effective barrier against bacteria. 20) Which of the following is not associated with lymphoid tissue? A) houses and provides a proliferation site for lymphocytes B) acts as an ideal surveillance point for lymphocytes and macrophages C) is composed of a loose reticular connective tissue D) located in the Peyer's patches in intestinal walls E) all of the above are associated with lymphoid tissue 21) What is the name of the polypeptide hormone produced by the parafollicular cells of the thyroid gland that targets the skeleton and inhibits osteoclast activity? A) chief cells B) parathormone C) calcitonin D) renin E) altosterone

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The detailed answer for the above question is provided below 14 Option c C artilage rings maintains ... View the full answer