B iology 202 Exam 2 Question s and
answ er s w ith accu r ate
r ationales(PASSED)
What does the Lymphatic System do? - answer A. a vast collection of
cells and biochemicals that travel in lymphatic vessels
B. It is a network of vessels that assist in circulating fluids.
C. It transports excess fluid away from the interstitial spaces.
D. It transports fluid to the bloodstream
E. It transports fats to the bloodstream
F.It helps defend the body against diseases
what are lymphatic capillaries? - answer Microscopic, close-ended
tubes. They extend into the interstitial spaces, forming complex
networks that parallel the blood capillaries.
What are lymphatic vessels? - answer A. The walls are similar but
thinner than those of veins.
B. composed of three layers:
1. An endothelial lining (inner)
2. Smooth muscle (middle)
3. Connective tissue (outer)
, C. Larger vessels lead to lymph nodes and then to larger lymphatic
trunks
What are lymphatic trunks? - answer drains lymph from the lymphatic
vessels. Named for the region it serves
What are Lymphatic collecting ducts? - answer Named for the region it
serves. Thoracic duct drains lymph from the intestinal, lumbar, and
intercostal trunks, as well as from the left subclavian. The right
lymphatic duct empties into the right subclavian vein.
When does tissue fluid become lymph? - answer once inside the
lymphatic capillaries.
What is lymph? - answer fluid, derived from interstitial fluid, that the
lymphatic vessels carry.
What are the functions of lymph? - answer 1. Absorption of dietary fats
2. Delivering fats to the bloodstream
3. Collecting of excess interstitial fluids
4. Delivering excess fluids to the bloodstream
5. Delivering foreign particles to the lymph nodes
, What drives lymph into lymphatic capillaries? - answer Hydrostatic
pressure of tissue fluid
What are the functions of lymph nodes? - answer 1. They contain
lymphocytes and macrophages to fight invading pathogens
2. Filter potentially harmful particles from the lymph
3. Act with immune surveillance provided by macrophages and
lymphocytes
What is the thymus? What does it do? - answer 1. Larger in infancy and
during puberty
2. Small in an adult
3. Replaced by fat and connective tissue in the elderly
4. Site of T lymphocyte (or T cell) production
5. Secretes protein hormones called thymosins
What is the spleen? What does it do? - answer 1. The largest lymphatic
organ
2. Located in the upper left abdominal quadrant
3. Has sinuses filled with blood
4. Contains two tissue types:
a. White pulp (lymphocytes)
answ er s w ith accu r ate
r ationales(PASSED)
What does the Lymphatic System do? - answer A. a vast collection of
cells and biochemicals that travel in lymphatic vessels
B. It is a network of vessels that assist in circulating fluids.
C. It transports excess fluid away from the interstitial spaces.
D. It transports fluid to the bloodstream
E. It transports fats to the bloodstream
F.It helps defend the body against diseases
what are lymphatic capillaries? - answer Microscopic, close-ended
tubes. They extend into the interstitial spaces, forming complex
networks that parallel the blood capillaries.
What are lymphatic vessels? - answer A. The walls are similar but
thinner than those of veins.
B. composed of three layers:
1. An endothelial lining (inner)
2. Smooth muscle (middle)
3. Connective tissue (outer)
, C. Larger vessels lead to lymph nodes and then to larger lymphatic
trunks
What are lymphatic trunks? - answer drains lymph from the lymphatic
vessels. Named for the region it serves
What are Lymphatic collecting ducts? - answer Named for the region it
serves. Thoracic duct drains lymph from the intestinal, lumbar, and
intercostal trunks, as well as from the left subclavian. The right
lymphatic duct empties into the right subclavian vein.
When does tissue fluid become lymph? - answer once inside the
lymphatic capillaries.
What is lymph? - answer fluid, derived from interstitial fluid, that the
lymphatic vessels carry.
What are the functions of lymph? - answer 1. Absorption of dietary fats
2. Delivering fats to the bloodstream
3. Collecting of excess interstitial fluids
4. Delivering excess fluids to the bloodstream
5. Delivering foreign particles to the lymph nodes
, What drives lymph into lymphatic capillaries? - answer Hydrostatic
pressure of tissue fluid
What are the functions of lymph nodes? - answer 1. They contain
lymphocytes and macrophages to fight invading pathogens
2. Filter potentially harmful particles from the lymph
3. Act with immune surveillance provided by macrophages and
lymphocytes
What is the thymus? What does it do? - answer 1. Larger in infancy and
during puberty
2. Small in an adult
3. Replaced by fat and connective tissue in the elderly
4. Site of T lymphocyte (or T cell) production
5. Secretes protein hormones called thymosins
What is the spleen? What does it do? - answer 1. The largest lymphatic
organ
2. Located in the upper left abdominal quadrant
3. Has sinuses filled with blood
4. Contains two tissue types:
a. White pulp (lymphocytes)
