Which of the following are described as partially encapsulated lymph nodes located in the throat area?
Tonsils
Thyroid gland
Thymus gland
Spleen
The Correct Answer is A
A. Tonsils:
Tonsils are lymphatic tissues located in the pharyngeal region; they are partially encapsulated and help trap airborne or ingested pathogens.
B. Thyroid gland:
The thyroid is an endocrine gland that regulates metabolism, not part of the lymphatic system.
C. Thymus gland:
The thymus is fully encapsulated and located in the mediastinum; it matures T cells.
D. Spleen:
The spleen is a fully encapsulated lymphoid organ located in the left upper quadrant of the abdomen.
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Related Questions
Correct Answer is D
Explanation
A. Infections:
Infections in older adults are often due to immune suppression, not directly from autoantibodies.
B. Cancer:
While aging does increase cancer risk, autoantibodies do not directly cause cancer.
C. Allergic reaction:
Allergies involve hypersensitivity reactions to external antigens, not the body's own cells.
D. Autoimmune disease:
Autoantibodies target the body's own tissues, leading to autoimmune diseases such as rheumatoid arthritis or lupus, which are more common in older adults.
Correct Answer is A
Explanation
A. Gives active artificial immunity
Vaccines stimulate the body’s immune system to produce antibodies and memory cells, creating active immunity artificially.
B. Is a gamma globulin
Gamma globulin is a preparation of antibodies used for passive immunity, not a vaccine.
C. Contains antibodies
Vaccines usually contain antigens (weakened or inactivated parts of a pathogen), not antibodies.
D. Gives active natural immunity
Active natural immunity is obtained through actual infection, not vaccination.
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