Multiple Choice
The __________ is/are the site of testosterone production in the testis.
44. Animal Reproduction
Animal Reproduction
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Pregnancy tests detect a hormone in a woman's urine that is present only when an embryo is developing in her uterus. This hormone is secreted by __________.
A
the ovary
B
a follicle
C
the pituitary
D
the endometrium
E
the embryo
Verified step by step guidance1
Understand the context: Pregnancy tests detect a specific hormone that indicates the presence of an embryo developing in the uterus.
Identify the hormone: The hormone detected by pregnancy tests is human chorionic gonadotropin (hCG).
Determine the source of hCG: hCG is produced by cells that form the placenta, which is associated with the developing embryo.
Eliminate incorrect options: The ovary, a follicle, the pituitary, and the endometrium are not responsible for secreting hCG.
Conclude with the correct source: The embryo, specifically the cells forming the placenta, secretes the hormone detected by pregnancy tests.
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