Welcome to the Lymphatic System MDCAT MCQs with Answers. In this post, we have shared Lymphatic System Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Biology offers a chance to enhance your knowledge regarding Lymphatic System MCQs in this MDCAT Online Test.
What is the primary function of the lymphatic system?
a) To produce red blood cells
b) To transport and filter lymph
c) To digest food
d) To regulate body temperature
Which structure is responsible for returning lymph to the bloodstream?
a) Lymph nodes
b) Spleen
c) Lymphatic vessels
d) Thymus
Which lymphatic organ filters blood and removes old red blood cells?
a) Lymph nodes
b) Thymus
c) Spleen
d) Bone marrow
What type of fluid is carried by the lymphatic system?
a) Blood
b) Cerebrospinal fluid
c) Lymph
d) Interstitial fluid
Which lymphatic structure is involved in the maturation of T cells?
a) Spleen
b) Lymph nodes
c) Thymus
d) Tonsils
Where do lymphocytes mature in the lymphatic system?
a) Spleen
b) Thymus and bone marrow
c) Lymph nodes
d) Tonsils
What is the role of lymph nodes in the immune system?
a) To filter lymph and trap pathogens
b) To produce hormones
c) To store red blood cells
d) To absorb nutrients
Which lymphatic vessel collects lymph from the lower half of the body?
a) Thoracic duct
b) Right lymphatic duct
c) Lymphatic capillaries
d) Subclavian vein
What type of lymphatic tissue is found in the tonsils?
a) Mucosa-associated lymphoid tissue (MALT)
b) Red bone marrow
c) Spleen
d) Thymus
Which of the following is NOT a primary lymphoid organ?
a) Spleen
b) Thymus
c) Bone marrow
d) Lymph nodes
What is the function of the lacteals in the lymphatic system?
a) To absorb dietary fats from the digestive tract
b) To filter blood
c) To produce lymphocytes
d) To store immune cells
Which lymphatic structure acts as a filter for lymph before it enters the bloodstream?
a) Thymus
b) Spleen
c) Lymph nodes
d) Tonsils
Where does the lymphatic system drain lymph from the right arm and right side of the head and thorax?
a) Thoracic duct
b) Right lymphatic duct
c) Jugular vein
d) Subclavian vein
What is the role of the Peyer’s patches in the lymphatic system?
a) To filter blood
b) To protect the digestive tract from pathogens
c) To produce antibodies
d) To mature T cells
Which of the following is a secondary lymphoid organ?
a) Thymus
b) Bone marrow
c) Lymph nodes
d) Red bone marrow
What happens when lymph nodes become swollen or tender?
a) They are producing more lymphocytes
b) They are infected or inflamed
c) They are becoming less functional
d) They are producing more lymph fluid
Which lymphatic organ is responsible for producing lymphocytes during childhood?
a) Bone marrow
b) Spleen
c) Thymus
d) Lymph nodes
Which type of vessel initiates the lymphatic pathway by absorbing interstitial fluid?
a) Lymphatic capillaries
b) Veins
c) Arteries
d) Venules
Which area does the thoracic duct NOT drain?
a) Right arm
b) Lower body
c) Left side of the head
d) Left side of the thorax
What is the primary function of the thymus gland in the lymphatic system?
a) To produce lymph
b) To mature T lymphocytes
c) To filter blood
d) To produce antibodies
Which part of the lymph node contains macrophages that engulf pathogens?
a) Cortex
b) Medulla
c) Subcapsular sinus
d) Germinal center
Which structure connects lymph nodes to the lymphatic vessels?
a) Afferent lymphatic vessels
b) Efferent lymphatic vessels
c) Lacteals
d) Capillaries
What type of tissue is found in the lymph nodes and spleen?
a) Connective tissue
b) Epithelial tissue
c) Lymphoid tissue
d) Muscle tissue
What is the primary role of the bone marrow in the lymphatic system?
a) To produce and mature T cells
b) To produce red and white blood cells
c) To filter lymph
d) To produce hormones
What type of cells are found in the germinal centers of lymph nodes?
a) Plasma cells
b) Macrophages
c) B cells
d) T cells
Which lymphatic structure is found in the digestive tract and helps in immune surveillance?
a) Peyer’s patches
b) Spleen
c) Thymus
d) Tonsils
Which of the following is NOT a function of the lymphatic system?
a) To transport nutrients
b) To filter lymph
c) To return interstitial fluid to the bloodstream
d) To house immune cells
Which lymphatic organ stores and filters blood, particularly red blood cells?
a) Lymph nodes
b) Spleen
c) Thymus
d) Bone marrow
Where are lymphatic capillaries NOT found in the body?
a) Brain
b) Skin
c) Lungs
d) Digestive tract
Which type of lymphatic vessel has valves to prevent backflow of lymph?
a) Lymphatic capillaries
b) Lymphatic vessels
c) Thoracic duct
d) Right lymphatic duct
What is the role of the subcapsular sinus in lymph nodes?
a) To filter lymph
b) To trap and process antigens
c) To produce lymphocytes
d) To mature T cells
Which organ is the site of red blood cell destruction and iron recycling?
a) Lymph nodes
b) Spleen
c) Thymus
d) Bone marrow
What is the purpose of the lymphatic system’s valve system?
a) To increase lymph flow
b) To prevent the backflow of lymph
c) To filter lymph more efficiently
d) To absorb dietary fats
Which of the following is NOT a function of lymph nodes?
a) To filter lymph
b) To produce red blood cells
c) To house immune cells
d) To trap pathogens
How does lymph return to the circulatory system?
a) Through the aorta
b) Through the veins
c) Through the thoracic and right lymphatic ducts
d) Through the arteries
Which structure is involved in the production of lymphocytes during childhood?
a) Spleen
b) Lymph nodes
c) Thymus
d) Bone marrow
Where are lymphatic capillaries most commonly found?
a) Muscles
b) Digestive tract
c) Brain
d) Bone marrow
What is the function of the thoracic duct?
a) To transport lymph from the upper right side of the body
b) To transport lymph from the lower body and left side of the head and thorax
c) To filter lymph
d) To produce lymphocytes
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