BLG 111 -Chapter 20: Lymphatic
System Questions and Already Passed
Solutions 2026 Updated.
What is the main function of the lymphatic system - Answer Returns fluids leaked from blood
vessels back to blood
What are the three components of the lymphatic system? - Answer Lymph
Lymphatics
Lymph nodes
What is lymph? - Answer fluid in lymphatic vessels
What are lymphatics? - Answer network of lymphatic vessels
What are lymph nodes/what do they do? - Answer clusters that cleanse the lymph
sort of like check points
What do lymphoid organs and tissues provide? - Answer structural basis of immune system
what do lymphoid organs and tissues house? (2) - Answer phagocytic cells and lymphocytes
Which of the following are lymphoid organs/tissues? SATA
a) spleen
b) ears
c) tonsils
d) lungs - Answer a&c
How many liters of interstitial fluid per day does the lymphatic system return to the blood? -
Answer 3 liters per day
Once interstitial fluid enters lymphatics, it is called ___________ - Answer lymph
Do lymphatic vessels offer one-way or two-way fluid with the heart? - Answer One way
towards the heart
, How do lymphatic vessels ensure one-way fluid system towards the heart (2)? - Answer they
have valves + depend on muscular contractions <3
T or F: lymphatic capillaries are continuous - Answer false! they are blind-ended finger-like
projections
T OR F: Lymphatic vessels are permeable - Answer true!
which are more permeable: blood vessels or lymphatic vessels? - Answer lymphatic vessels
What 2 specialized structures contribute to increased permeability in lymphatic capillaries?
explain them - Answer 1. endothelial cells overlap loosely to form mini valves
2. mini valves are anchored by collagen filaments to matrix, so increases in ECF volume opens
mini valves even more
what is the job of capillary vessels? - Answer to enhance the uptake of fluid from the
interstitium
Is lymph transport a low or high pressure system? - Answer low pressure system
What 5 mechanisms propel lymph? - Answer 1. Milking action of skeletal muscle
2. Pressure changes in thorax during breathing
3. Valves to prevent backflow
4. Pulsations of nearby arteries
5. Contractions of smooth muscle in walls of lymphatics
MPVPC
What increases the flow of lymph? - Answer physical activity
why is immobilizing an injured area a good idea? - Answer keeps needed inflammatory
material in the area for faster healing
What 2 cells do lymphoid cells consist of? - Answer immune system cells found in lymphoid
tissue
supporting cells that form lymphoid tissue structures
System Questions and Already Passed
Solutions 2026 Updated.
What is the main function of the lymphatic system - Answer Returns fluids leaked from blood
vessels back to blood
What are the three components of the lymphatic system? - Answer Lymph
Lymphatics
Lymph nodes
What is lymph? - Answer fluid in lymphatic vessels
What are lymphatics? - Answer network of lymphatic vessels
What are lymph nodes/what do they do? - Answer clusters that cleanse the lymph
sort of like check points
What do lymphoid organs and tissues provide? - Answer structural basis of immune system
what do lymphoid organs and tissues house? (2) - Answer phagocytic cells and lymphocytes
Which of the following are lymphoid organs/tissues? SATA
a) spleen
b) ears
c) tonsils
d) lungs - Answer a&c
How many liters of interstitial fluid per day does the lymphatic system return to the blood? -
Answer 3 liters per day
Once interstitial fluid enters lymphatics, it is called ___________ - Answer lymph
Do lymphatic vessels offer one-way or two-way fluid with the heart? - Answer One way
towards the heart
, How do lymphatic vessels ensure one-way fluid system towards the heart (2)? - Answer they
have valves + depend on muscular contractions <3
T or F: lymphatic capillaries are continuous - Answer false! they are blind-ended finger-like
projections
T OR F: Lymphatic vessels are permeable - Answer true!
which are more permeable: blood vessels or lymphatic vessels? - Answer lymphatic vessels
What 2 specialized structures contribute to increased permeability in lymphatic capillaries?
explain them - Answer 1. endothelial cells overlap loosely to form mini valves
2. mini valves are anchored by collagen filaments to matrix, so increases in ECF volume opens
mini valves even more
what is the job of capillary vessels? - Answer to enhance the uptake of fluid from the
interstitium
Is lymph transport a low or high pressure system? - Answer low pressure system
What 5 mechanisms propel lymph? - Answer 1. Milking action of skeletal muscle
2. Pressure changes in thorax during breathing
3. Valves to prevent backflow
4. Pulsations of nearby arteries
5. Contractions of smooth muscle in walls of lymphatics
MPVPC
What increases the flow of lymph? - Answer physical activity
why is immobilizing an injured area a good idea? - Answer keeps needed inflammatory
material in the area for faster healing
What 2 cells do lymphoid cells consist of? - Answer immune system cells found in lymphoid
tissue
supporting cells that form lymphoid tissue structures
