front 1 Adjacent cells in lymphatic capillaries overlap each other loosely. These cells form a unique structural modification that increases their permeability that is known as the __________. | back 1 minivalves |
front 2 Which of the following returns lymph to the right lymphatic duct? | back 2 right side of the head |
front 3 Which of the following delivers lymph into the junction of the internal jugular vein and the subclavian vein? | back 3 thoracic duct |
front 4 Which of the following promotes closure of the minivalves associated with lymph capillaries? | back 4 increasing pressure inside the lymph capillary |
front 5 To what organ do the lymphatic vessels return protein-rich escaped fluids to rejoin circulation? | back 5 heart |
front 6 What do collecting lymphatic vessels NOT share in common with veins of the cardiovascular system? | back 6 thickness of the walls |
front 7 What is the main function of the lymphatic system? | back 7 The lymphatic system returns leaked fluid and plasma proteins that escape from the bloodstream to the blood. |
front 8 Which of the following lacks lymph capillaries? | back 8 bones and teeth |
front 9 Lymph from the right leg ultimately is delivered to which duct in the thoracic region? | back 9 thoracic duct |
front 10 Lymph from what regions of the body is drained into the right lymphatic duct? | back 10 right upper limb, right side of the head and thorax |
front 11 What is the name of the enlarged sac to which the lumbar trunks and the intestinal trunk returns lymph? | back 11 cisterna chyli |
front 12 Lymph is most similar to __________. | back 12 interstitial fluid |
front 13 Lymphatic collecting vessels are most closely associated with __________. | back 13 capillary beds |
front 14 Which of the following statements is true regarding veins versus lymphatic collecting vessels? | back 14 Veins have fewer internal valves than do lymphatic vessels. |
front 15 Once collected, lymph is returned to __________. | back 15 venous circulation |
front 16 Lymphatic vessels __________. | back 16 return tissue fluid to the bloodstream |
front 17 Lymphangitis is caused by ______. | back 17 an infection |
front 18 Lymphedema may be treated by all EXCEPT which of the following? | back 18 bed rest to allow enhanced blood flow and therefore healing of the affected area |
front 19 What is the role of the mini-valves in lymph capillaries? | back 19 increase permeability |
front 20 When the lymphatic structures of a limb are blocked due to tumors, the result is ________. | back 20 severe localized edema distal to the blockage of that limb |
front 21 Select the correct statement about lymph transport. | back 21 Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles. |
front 22 Lymph capillaries are absent in all except which of the following? | back 22 digestive organs |
front 23 Large clusters of lymph nodes occur in all of the following locations except the ________. | back 23 lower extremities |
front 24 Which of the following is not a method that maintains lymph flow? | back 24 capillary smooth muscle contraction |
front 25 Which of the following is not a normal component of lymph? | back 25 red blood cells |
front 26 Which of the following is not a function of the lymphatic system? | back 26 transporting respiratory gases |
front 27 Lymph transport involves all but which of the following? | back 27 smooth muscle contraction in the lymph capillary walls |
front 28 Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax? | back 28 right lymphatic duct |
front 29 Which of the following is not a part of the lymphatic system? | back 29 erythrocytes |
front 30 The lymphatic capillaries are ________. | back 30 more permeable than blood capillaries |
front 31 Like blood, lymph flows both to and from the heart. | back 31 F |
front 32 When tissues are inflamed, lymphatic capillaries develop openings that permit uptake of large particles such as cell debris, pathogens, and cancer cells. | back 32 T |
front 33 The cisterna chyli collects lymph from the lumbar trunks draining the upper limbs and from the intestinal trunk draining the digestive organs. | back 33 F |
front 34 The lymphatic capillaries function to absorb the excess protein-containing interstitial fluid and return it to the bloodstream. | back 34 T |
front 35 Lymph capillary permeability is due to minivalves and protein filaments. | back 35 T |
front 36 Lymphatic capillaries are permeable to proteins. | back 36 T |
front 37 Digested fats are absorbed from the intestine by the lymph capillaries. | back 37 T |
front 38 Chyle is delivered to the blood via the lymphatic system. | back 38 T |
front 39 About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph. | back 39 T |
front 40 Because lymph vessels are very low-pressure conduits, movements of adjacent tissues are important in propelling lymph through the lymphatics. | back 40 T |