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The most important function(s) of the lymphatic system is/are:
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Lymphatic capillaries that operate in the villi of the small intestine are called:
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ch 31
| Question | Answer |
|---|---|
| The most important function(s) of the lymphatic system is/are: | fluid balance of the internal environment and immunity. |
| Lymphatic capillaries that operate in the villi of the small intestine are called: | lacteals |
| Lymph from the entire body drains into the thoracic duct, except lymph from the: | upper right quadrant |
| Which of the following is not a difference between lymphatics and veins? | Lymphatics endure greater pressure |
| If lymphatic return is blocked, which of the following will not occur? | CO2 levels in the blood will rise |
| Lymphatic circulation is maintained by all of the following except: | heart |
| Lymphatic circulation begins with lymphatic: | capillaries |
| The lymphatic system could be referred to as a specialized component of the circulatory system. T or F? | True |
| Lymphatic vessels, like vessels in the blood vascular system, form a closed loop of circulation. T or F? | False. |
| Both lymph and interstitial fluid closely resemble blood plasma in composition. T or F? | True |
| Lymphatics have one-way valves much like veins. T or F? | True |
| The milky lymph found in lacteals after digestion is called chyle. T or F? | True |
| A dilated structure on the thoracic duct that serves as a storage area for lymph moving toward its point of entry into the venous system is the cisterna chyli. T or F? | True |
| Activities that result in central movement, or flow, of lymph are called lymphokinetic actions. T or F? | True |
| The small depression of a lymph node from which the efferent lymph vessel arises is termed the: | hilum |
| The lymph nodes located in front of the ear are called the: | none of the above |
| An infection of a lymph node is called: | adenitis |
| The lymphatic tissue of lymph nodes serves as the final maturation site for: | monocytes and lymphocytes |
| Even though some lymph nodes occur in clusters, most occur as single nodes. T or F? | False. With the exception of comparatively few single nodes, most lymph nodes occur in groups, or clusters, in certain areas. |
| Cortical nodules are composed of packed lymphocytes that surround an area called the germinal center. T or F? | True |
| Over 85% of the lymph from the breast enters lymph nodes of the: | axillary region. |
| The breast—mammary gland and surrounding tissue—is drained by: | a. Lymphatics that originate in and drain the skin over the breast, with the exception of the areola and nipple. b. Lymphatics that originate in and drain the substance of the breast itself, including the skin of the areola and nipple. |
| Adenoids are swollen: | pharyngeal tonsils |
| The thymus secretes: | thymosin |
| The thymus is located: | in the mediastinum |
| As a person ages, the thymus increases in size; this process is called involution. T or F? | False. As a person ages, the thymus decreases in size. The process of shrinkage of an organ in this manner is called involution. |
| The spleen functions solely in defense from foreign microorganisms. T or F? | False. |
| The spleen removes imperfect platelets from the blood. T or F? | True |
| ____________ is a term that refers to a tumor of the cells of lymphoid tissue. | Lymphoma |
| A middle ear infection is known as _________ __________ __________ | acute otitis media |
| Septicemia is also known as _________ _________ | blood poisoning |
| Lymphedema may be caused by small parasitic worms called ____________ that infest the lymph nodes. | filarial |
| Two principal categories of lymphomas are _____________ and _______________ lymphoma. | Hodgkin and non-Hodgkin |
| ______ palatine, pharyngeal, tubal, and lingual are examples | tonsils |
| ______ hematopoiesis | spleen |
| ______ destroys worn-out red blood cells | spleen |
| ______ located in the mediastinum | thymus |
| _____ serves as a reservoir for blood | spleen |
| ______ T lymphocytes | thymus |
| ______ largest at puberty | thymus |
| The cisterna chyli is a dilated structure on the thoracic duct that serves as a storage area for lymph moving into the venous system. T or F? | True |
| Healthy capillaries “leak” proteins. T or F? | True |
| Thoracic duct lymph is “pumped” into the venous system during inspiration. T or F? | True |
| Lymph nodes have several afferent and efferent vessels. T or F? | False. |
| Lymphedema is swelling due to an accumulation of lymph. T or F? | True |
| An anastomosis is the removal of a part. T or F? | False. Surgical procedure connecting two structures in the body |
| The spleen is located below the diaphragm, above the right kidney and descending colon. T or F? | False. The spleen is just above most of the left kidney and the descending colon and behind the fundus of the stomach |
| Splenomegaly is removal of the spleen. T or F? | False. Abnormal spleen enlargement |
| Lymphatic system is a component of the ______ system | circulatory |
| Tonsils, Thymus, Spleen, and Bone marrow are all structures of the ______ system | Lymphatic |
| Lymph from the upper right quadrant empties into the right _____ _____ and then into the right _____ _____ | lymphatic duct / subclavian vein |
| Lymph from the rest of the body empties into the _____ _____ | thoracic duct |
| Thoracic duct originates in the _____ _____ | cisterna chyli |
| Lymphatic vessels have thinner walls and more valves, and contain _____ _____ | lymph nodes |
| As the diameter of lymphatic vessels increases, the walls become _____ | thicker |
| Interlacing _____ _____ are found in the tunica media and tunica externa of the walls of large lymphatic vessels | elastic fibers |
| _______ valves give lymphatic vessels a varicose, beaded appearance | One-way |
| Most lymphatic vessels have the capacity for repair or regeneration when damage. T or F? | True |
| _____ absorb fats and other nutrients from the small intestine | Lacteals |
| what percent of proteins leak out and are returned via lymphatic vessels? | 50% |
| Skeletal muscle contractions (increase/decrease) flow | increase |
| Total volume of lymph depends on depth of ______ | inspiration |
| _____ tonsils are located on each side of the throat | Palatine |
| The _____ is located in the left hypochondrium of the abdominopelvic cavity, directly below the diaphragm | spleen |
| The _____ is just above most of the left kidney and the descending colon and behind the fundus of the stomach. | spleen |
| _____ ____ is made up of dense masses of developing lymphocytes. | White pulp |
| ____ ____ is made up of a network of fine reticular fibers submerged in blood that comes from nearby arterioles. | Red pulp |
| The ____ ____ network supports cords of white blood cells (WBCs) and related cells surrounded by blood-filled sinusoids. | red pulp |
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