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Review Questions:
True or False:
1. Both erythroid and lymphoid cells in the bone marrow
are derived from common stem cells
2. Extramedullary haematopoiesis that occurs under pathologic
conditions is usually seen in the lung and skeletal muscle
3. The bone marrow of adult animals contains the precurssors
of myeloid but not lymphoid cells
4. Reticulocytes are nucleated, immature red blood cells
that are only rarely seen outside the bone marrow
5. Iron deficiency causes a hypochromic macrocytic anaemia
6. Chronic lymphocytic leukaemia is a maligant clonal proliferation
of T-lymphocytes
7. Without aggressive ttreatment, chronic lymphocytic leukaemia
is rapidly fatal
8. Lymph nodes are rarely involved in metastaic neoplasia
9. The spleen is the site of production of T lymphocytes
10. Thymic neoplasia can arise in either the epithelial
or lymphoid components of the thymus
11. Nodular hyperplasia, splenic haemangiosarcom and splenic
haematoma can always be distinguished grossly.
12. After puberty the thymus undergoes complete atrophy
and is no longer capable of producing T-lymphocytes.
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