BIOS 255- Week 4 - The Lymphatic System Exam Questions and Correct Answers 100% Guaranteed Success

BIOS 255- Week 4 - The Lymphatic System Exam Questions and Correct Answers 100% Guaranteed Success Which hydrophobic substance cannot be easily transported in blood? Polysaccharide Monosaccharide Albumin Protein Triglyceride - Answers Triglyceride Triglycerides are the most abundant type of lipid. Lipids are hydrophobic substances that are not easily transported in blood and often require being transported by carrier proteins. All other options are hydrophilic substances that can be easily transported in blood. Which vessels are responsible for reabsorption of fluid from the interstitial space? Veins Arterioles Venules Arteries Lymphatic capillaries - Answers Lymphatic capillaries Lymphatic capillaries are thin-walled vessels that help to reabsorb fluid found in the interstitial space. Arteries and arterioles carry oxygenated blood toward tissues. Venules and veins carry deoxygenated blood toward the heart. Which leukocytes play an essential role in adaptive immunity, identifying and combating infected or abnormal cells? Basophils Neutrophils Lymphocytes Eosinophils Erythrocytes - Answers Lymphocytes Lymphocytes function as a part of adaptive immunity in which they detect and attack pathogenic materials. Neutrophils function as phagocytic cells that help get rid of pathogens. Basophils secrete the chemicals heparin and histamine to inhibit blood clotting and promote inflammation. Erythrocytes are red blood cells that transport gases. Eosinophils function against parasitic infections. Which is not a component of the lymphatic system? Lymphatic organs Lymphatic tissues Lymphatic vessels Blood capillaries - Answers Blood capillaries The lymphatic system consists of lymphatic organs, tissues, vessels, and lymph. Blood capillaries are not a part of this system. pproximately what percentage of interstitial fluid is reabsorbed by blood capillaries? 25% 15% 85% 5% - Answers 85% Blood capillaries reabsorb the majority of interstitial fluid (85%). The remaining 15% is reabsorbed via lymphatic vessels. Which specialized vessels absorb dietary fats from the small intestine to be transported to the bloodstream? Arterioles Lacteals Capillaries Venules Veins - Answers Lacteals Lacteals are specialized lymphatic vessels that transport absorbed dietary fats or fat-soluble vitamins from the small intestine as they are too large to be transported in blood. Arterioles, capillaries, veins, and venules are all blood vessels that function to transport blood to and from the heart. Which lymphatic organ is responsible for filtering out pathogens, abnormal cells, and potentially harmful foreign substances from the lymph? Lymph nodes Kidneys Tonsils Spleen Thymus - Answers Lymph nodes Lymph nodes are the most numerous lymphatic organs. They are found scattered throughout the body and concentrated in certain areas. As lymph passes through these organs, lymphocytes present will detect and fight against pathogenic cells. How does lymph differ from blood? Lymph is always thicker than blood. Lymph contains more red blood cells. Lymph has a lower protein content. Lymph flows in closed circulatory systems. - Answers Lymph has a lower protein content. Lymph is a colorless, clear fluid that is very similar to blood plasma but with a lower protein concentration. Lymph does not contain red blood cells (RBCs) and has a similar consistency to blood. Which are lymphatic organs? Select all that apply. Thyroid Kidneys Thymus Red bone marrow Small intestine Lymph nodes - Answers Thymus Red bone marrow Lymph nodes The different lymphatic organs include the thymus, tonsils, red bone marrow, spleen, and lymph nodes. The thyroid is part of the endocrine system. The kidneys are part of the urinary system. The small intestine is part of the digestive system. While the small intestine contains lymphatic tissue, it is not considered a lymphatic organ because its main function is digestion. Failure to return excess fluid to the bloodstream via the lymphatic system could result in which condition characterized by tissue swelling? Edema Atherosclerosis Diabetes Circulatory shock Hypotension - Answers Edema Excess fluid that does not get reabsorbed and is accumulated in interstitial spaces results in edema, or tissue swelling. Which immune cells are found densely populated in lymph nodes and activate an immune response against foreign matter or pathogens? Erythrocytes Lymphocytes Neutrophils Lacteals Eosinophils - Answers Lymphocytes Lymphocytes are found to be densely populated inside of lymphatic organs and tissues. They are used to fight directly against pathogens. Neutrophils function as phagocytic cells that help get rid of pathogens. Erythrocytes are red blood cells that transport gases. Eosinophils function against parasitic infections. Lacteals are specialized lymphatic vessels that absorb dietary fats. Which is not a function of the lymphatic system?