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- The stimulus for menstruation or bleeding is mainly due toA. The drop in progesterone levelsB. The high LHC. The rise in estrogen levelsD. A, BE. A, B, CExplain why each choice (a-d) is correct or incorrect The blood testis barrier is to newly formed sperm cells as the blood thymus barrier is to a.T lymphocyte precursors b. Mast cells c. Plasma cells d. White pulpOne known function of the cells of the thymus is to a. produce and secrete antibodies b. produce and secrete thymic hormones c. produce and secrete interleukin-1 d. act as antigen-presenting cell
- Which is true about Rh blood types. A. Rh positive people will always have an anti-B antibody. B. Rh positive people have anti-D antibodies. C. Rh negative people do not have anti-D antibodies unless exposed to Rh positive blood. D. Rh positive people will always have an anti-O antibody. E. Rh negative people automatically have anti-D antibodies. NoneWhich of the following statements is true? A. Some individuals are born with Rh antibodies. B. A person could acquire Rh antigens from a blood transfusion. C. A pregnant female could give her developing baby Rh antibodies D. A pregnant female could acquire Rh antibodies.A child born without his thymus would not have mature a. macrophages. b. B-lymphocytes. c. dendritic cells. d. T-lymphocytes.
- The thymus Select one: is fully developed at birth. b. begins to degrade shortly after birth. is organized into cortex and medulla regions in capsules. O d. supports the development of the thymocytes which are stimulated by contact with the thymic stroma. e. all the choices are correct. a. c.Should young women collect and freeze oocytes for use later in life when they want to have children? (A bit of a loaded question…) What are the risks associated with older women having children?please see attached picture... i have asked this question before.. twice. by mistake.. but i got two different anwsers... please verify
- Figure 17.17 The Rh antigen is found on Rh-positive red blood cells. An Rh-negative female can usually carry an Rh-positive fetus to term without difficulty. However, if she has a second Rh-positive fetus, her body may launch an immune attack that causes hemolytic disease of the newborn. Why do you think hemolytic disease is only a problem during the second or subsequent pregnancies?Figure 42.16 The Rh antigen is found on Rh positive red blood cells. An Rh-negative female can usually carry an Rh-positive fetus to term without difficulty. However, if she has a second Rh-positive fetus, her body may launch an immune attack that causes hemolytic disease of the newborn. Why do you think hemolytic disease is only a problem during the second or subsequent pregnancies?......,.. is critical to both peyer's patches and nervous system development in intestine. Neurophic factor receptor RET TGF beta retinoic acid IL-2