Week 1 - Lymphatic system Flashcards
What type of system do lymphatic vessels form? a) Closed loop b) One-way system c) Two-way system d) Circular system
b) One-way system
Which vessels are the smallest in the lymphatic system? a) Lymphatic ducts b) Lymphatic trunks c) Lymphatic capillaries d) Lymphatic veins
c) Lymphatic capillaries
What allows lymphatic capillaries to be very permeable? a) Smooth muscle contraction b) Tight endothelial cells c) Loosely overlapping endothelial cells d) High interstitial pressure
c) Loosely overlapping endothelial cells
Which vessels have valves to prevent backflow? a) Lymphatic veins b) Lymphatic vessels c) Lymphatic ducts d) Lymphatic capillaries
b) Lymphatic vessels
Into which veins does the thoracic duct dump lymph? a) Right jugular and right subclavian veins b) Left jugular and left subclavian veins c) Inferior vena cava d) Right and left brachiocephalic veins
b) Left jugular and left subclavian veins
What is the primary function of the lymphatic system? a) Transporting oxygen b) Returning fluid to blood circulation c) Removing carbon dioxide d) Synthesising proteins
b) Returning fluid to blood circulation
Which organ cleanses blood and stores RBCs and platelets? a) Thymus b) Lymph node c) Spleen d) Tonsils
c) Spleen
Where are the highest concentrations of lymph nodes found? a) Neck, armpit, groin b) Brain c) Heart d) Liver
a) Neck, armpit, groin
What is the main function of the thymus? a) Producing red blood cells b) Developing T-cells c) Storing platelets d) Filtering lymph
b) Developing T-cells
Which of the following is NOT a primary lymphoid organ? a) Thymus b) Red bone marrow c) Spleen d) None of the above
c) Spleen
Which lymphoid tissue is associated with mucous membranes? a) MALT b) Spleen c) Bone marrow d) Thymus
a) MALT
What does MALT stand for? a) Mucosal-Associated Lymphatic Tissue b) Mucosa-Associated Lymphoid Tissue c) Mucus-Activated Lymphoid Tissue d) Mucosal-Adhering Lymphatic Tissue
b) Mucosa-Associated Lymphoid Tissue
Which of the following is a function of lymph nodes? a) Storing fat b) Filtering blood c) Cleansing lymph d) Producing hormones
c) Cleansing lymph
Which lymphatic structure absorbs fat from the small intestine? a) Lymph node b) Lacteal c) Thymus d) Peyer’s patches
b) Lacteal
Which organ is responsible for destroying old red blood cells? a) Thymus b) Spleen c) Lymph nodes d) Tonsils
b) Spleen
What is lymph? a) Plasma b) Interstitial fluid c) Blood d) A type of white blood cell
b) Interstitial fluid
Which lymphoid organ traps pathogens entering through the pharynx? a) Spleen b) Thymus c) Tonsils d) Lymph nodes
c) Tonsils
Which lymphoid organ is most active during childhood? a) Spleen b) Thymus c) Tonsils d) Appendix
b) Thymus
What is the function of lymphatic valves? a) Increase pressure b) Pump lymph c) Prevent backflow d) Transport fat
c) Prevent backflow
Which condition is characterised by swelling due to a blockage in the lymphatic system? a) Buboes b) Lymphedema c) Lymphangitis d) Spleen damage
b) Lymphedema
Which organ is a secondary lymphoid organ? a) Thymus b) Red bone marrow c) Spleen d) None of the above
c) Spleen
What type of tissue is lymphoid tissue primarily composed of? a) Cartilage b) Reticular connective tissue c) Adipose tissue d) Muscle tissue
b) Reticular connective tissue
What is the main component of diffuse lymphoid tissue? a) Tightly packed lymph cells b) Loosely arranged lymphoid cells c) Blood cells d) Fat cells
b) Loosely arranged lymphoid cells
Which organ serves as a ‘lookout’ for the immune system? a) Lymph nodes b) Spleen c) Thymus d) Tonsils
a) Lymph nodes
What is the first lymphoid organ to develop in an embryo? a) Spleen b) Thymus c) Lymph nodes d) Tonsils
b) Thymus
