1 Cardiomyopathy and Women's health symptoms and Movement symptoms (12 causes) 2  Cardiomyopathy and Women's health symptoms and Muscle symptoms (12 causes) 3  Cardiomyopathy and Women's health symptoms and Nerve symptoms (12 causes)  Cardiomyopathy and Women's health symptoms and Heart symptoms (11 causes)
chorion. the outermost of the fetal membranes, composed of trophoblast lined with mesoderm; it develops villi, becomes vascularized by allantoic vessels, and forms the fetal part of the placenta. chorion frondosum. the part of the chorion covered by villi.
Chondrichthyes (/kÉnËdrÉªkÎ¸É¨.iËz/ ; from Greek ÏÎ¿Î½Î´Ï- chondr- 'cartilage', á¼°ÏÎ¸ÏÏ ichthys 'fish') is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone.s they do not have bone marrow, red blood cells are produced in the spleen and the epigonal organ (special tissue around the gonads, which is also thought to play a role in the immune system). They are also produced in the Leydig's organ, which is only found in cartilaginous fishes, and not even all of them.