The placenta is also ___, initially producing an additional ___ known as ___ ( ___ ).
an endocrine gland | sex hormone | human chorionic gonadotrophin | HCG
an endocrine gland | hormone | human chorionic gonadotrophin | HGC
an exocrine gland | fluid | human chorionic gonadotrophin | HCG
an endocrine gland | respiratory gas | human embryonic gonadotrophin | HEG
___ appears in the ___ from about ___ after ___; ____ antibodies are used to detect its presence in urine in pregnancy-testing kits.
HCG | urine | 7 days | conception | monoclonal
FSH | urine | 7 months | conception | maternal
HCG | blood | 7 days | conception | clonal
LH | urine | 7 days | fertilisation | monoclonal
HCG is initially secreted by the cells of the ___, but later it comes entirely form the ___ and its role is to maintain the ___ as ___ ( secreting ___ & ___ ) for the first __ weeks of pregnancy.
blastocyst | placenta | corpus luteum | an endocrine gland | progesterone | oestrogen | 16
placenta | blastocyst | corpus luteum | an exocrine gland | progesterone | oestrogen | 6
blastocyst | cervix | primary follicle | an endocrine gland | FSH | oestrogen | 17
primary follicle | blastomere | primary follicle | an organelle | progesterone | LH | 10
When the ___ eventually breaks down the ___ itself secretes ___ as without the maintenance of hormone levels, conditions favourable to a ___ are not maintained in the ___ and a ___ results.
corpus luteum | placenta | progesterone & oestrogen | fetus | uterus | spontaneous abortion
corpus luteum | placenta | progesterone & oestrogen | fetus | oviduct | spontaneous abortion
blastocyst | placenta | progesterone & oestrogen | fetus | uterus | spontaneous abortion
corpus luteum | placenta | progesterone & FSH | fetus | uterus | spontaneous abortion