Asked by Chris Porter on Apr 27, 2024
Verified
A pregnancy test is sensitive to which hormone? What structure produces this hormone?
A) FSH; anterior pituitary
B) estrogen; ovary
C) progesterone; corpus luteum
D) HCG; trophoblast
E) GnRH; hypothalamus
HCG
Human Chorionic Gonadotropin, a hormone produced during pregnancy by the placenta that supports the fetal egg after conception.
Trophoblast
Outer membrane surrounding the embryo in mammals; when thickened by a layer of mesoderm, it becomes the chorion, an extraembryonic membrane.
Pregnancy Test
A medical test used to determine if a woman is pregnant, typically by detecting the presence of hCG hormone in urine or blood.
- Understand the hormonal regulation and structures involved in human pregnancy.
Verified Answer
IS
inderjeet singhMay 02, 2024
Final Answer :
D
Explanation :
The hormone detected by a pregnancy test is HCG (human chorionic gonadotropin), which is produced by the trophoblast cells of the placenta after implantation of the embryo in the uterus. Option A is incorrect as FSH (follicle-stimulating hormone) is not the hormone detected by a pregnancy test, rather it plays a role in the menstrual cycle and maturation of ovarian follicles. Option B is incorrect as estrogen is not specific to pregnancy, it is present throughout the menstrual cycle and plays a role in reproductive function. Option C is incorrect as progesterone is also not specific to pregnancy, it is involved in the menstrual cycle and maintenance of pregnancy. Option E is incorrect as GnRH (gonadotropin-releasing hormone) is produced by the hypothalamus and regulates the release of FSH and LH (luteinizing hormone) from the pituitary gland.
Learning Objectives
- Understand the hormonal regulation and structures involved in human pregnancy.