The thymus is located in the ,anterior to the aortic arch. The thymus reaches it

Question

1. The thymus is located in the                          ,anterior to the aortic arch.
2. The thymus reaches its greatest size during puberty andtends to decrease in size following               .
3. 
   
4. As a person ages, the thymus tissue is often replaced by                                           .
5. The lymphocytes of the thymus develop from precursor cells thatoriginated in the            .
6. The hormone secreted by the thymus iscalled                                          .
7. The                                      isthe largest of the lymphatic organs.
8. Blood vessels enter the spleen through the region called the                                        .
9. The sinuses within the spleen are filled with                                                .
10. The tiny islands of tissue within the spleen comprise the                                           .
11. The                                     ofthe spleen contain large numbers of red blood cells, lymphocytes,and macrophages.
12.                                        within the spleen function to engulf and destroy foreignparticles.

Explanation / Answer

1.mediastinum 2.puberty 3.fat 4.multipotent cells of bone marrow 5.T3 and T4 hormones 6.spleen 7.pedicle 8.RBC 9.white pulp which has splenic nodules which containlymphocytes. 10.red pulp 11.macrophages hope it helps

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