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 C
Explanation
A. Is secreted by all lymph nodes:
Thymosin is not produced by lymph nodes; it is secreted by the thymus gland.
B. Is the fluid within the lymph nodes:
Lymph fluid circulates within lymph nodes, not thymosin.
C. Is a hormone:
Thymosin is a hormone secreted by the thymus that plays a role in the development and differentiation of T lymphocytes.
D. Plays no known role:
Thymosin has an important role in immune system development.
Correct Answer is A
Explanation
A. Shingles
Shingles (herpes zoster) occurs when the varicella-zoster virus reactivates from latency in nerve ganglia, typically many years after initial infection with chickenpox.
B. Measles
Measles is caused by the rubeola virus and is not related to herpes varicella zoster.
C. Smallpox
Smallpox is caused by the variola virus, which is entirely different from the herpesvirus group.
D. Mumps
Mumps is caused by a paramyxovirus and is unrelated to varicella-zoster.
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