7 Questions
Which of the following is NOT considered a lymphoid organ?
Liver
Which type of tissue is predominant in lymphoid organs?
Reticular connective tissue
Which lymphoid organ filters and cleanses blood, destroys worn-out red blood cells, and stores platelets?
Spleen
What is the function of the thymus gland?
To produce thymosin that develops active T-lymphocytes
What is the function of MALT (mucosa-associated lymphoid tissue)?
To contain B and T-lymphocytes and be involved in early detection of invaders
What is the function of tonsils?
To trap and remove pathogens
Which defence system includes lymphocytes and antibodies?
Specific defence system
Study Notes
- Lymphoid organs include the spleen, thymus gland, tonsils, Peyer's patches, and scattered lymphatic tissue.
- Lymphoid organs are characterized by predominance of reticular connective tissue and lymphocytes.
- Only lymph nodes filter lymph.
- The spleen is the largest lymphoid organ and filters and cleanses blood, destroys worn-out red blood cells, and stores platelets.
- The thymus gland produces thymosin that develops active T-lymphocytes.
- MALT (mucosa-associated lymphoid tissue) contains B and T-lymphocytes and is involved in early detection of invaders.
- Tonsils are small masses of lymphatic tissue that surround the pharynx and function to trap and remove pathogens.
- Peyer's patches are located in the wall of the small intestine and contain macrophages to capture and destroy bacteria.
- The body has two defence systems to fight foreign pathogens: nonspecific and specific.
- The nonspecific defence system includes the skin, mucous membranes, phagocytic white cells, anti-microbial proteins, and inflammatory response and fever, while the specific defence system includes lymphocytes and antibodies.
Test your knowledge on the fascinating world of Lymphoid organs and defence systems with this quiz! Discover the functions and components of the spleen, thymus gland, tonsils, Peyer's patches, and scattered lymphatic tissue. Learn about the two defence systems that protect our body from foreign pathogens: the nonspecific defence system and the specific defence system. Challenge yourself with questions on the characteristics of lymphoid organs and their crucial roles in the immune response. Take this quiz now to expand your
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