The thymus is derived from which embryonic structure?

Questions 48

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Lymphatic System Practice Questions Questions

Question 1 of 5

The thymus is derived from which embryonic structure?

Correct Answer: A

Rationale: The thymus comes from pharyngeal pouches; neural crest , mesoderm , and ectoderm form other structures.

Question 2 of 5

With regard to the superficial cortex of the lymph node: It is part of a primary lymphatic organ.

Correct Answer: B

Rationale: Lymph nodes are secondary lymphatic organs; primary organs include thymus and bone marrow.

Question 3 of 5

The lymphatic fluid is

Correct Answer: C

Rationale: Lymphatic fluid is typically colorless, lacking the red blood cells that give blood its color.

Question 4 of 5

is irregular branched with B-lymph, contineous with Cortical follicle

Correct Answer: D

Rationale: Medullary cords are irregular, branched, B-lymphocyte-rich, and continuous with cortical follicles.

Question 5 of 5

is aggregation of lymph tissue with incomplete capsule

Correct Answer: A

Rationale: Tonsils are lymphoid tissue aggregates with incomplete capsules.

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