Tag: coordination in human beings- chemical control
Questions Related to coordination in human beings- chemical control
Which one of the following is temporary endocrine gland?
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Pineal
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Pancreas
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Placenta
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Parathyroid
The placenta is an endocrine gland, that is only present during pregnancy. It produces hormones including human chorionic gonadotropin (hCG), progesterone, estrogen, and human placental lactogen (hPL).
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hCG
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hPL
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Prolactin
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Estrogen
Prolactin is a hormone secreted in mammals (lactotrophs), usually females and stimulates the mammary gland to produce milk. This hormone is also called luteotropin or luteotropic hormone. The major source of prolactin is the anterior pituitary regulated by the hypothalamus, however, several other tissues synthesize and secrete this hormone. All the other hormones in the options such as hCG, hPL, and estrogen are secreted by the placenta.
Placenta produces certain hormones.
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True
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False
Placenta acts as a barrier between the mother and foetus and is a temporary association between the foetal and maternal tissues. It acts as an endocrine gland and secretes hormones such as human Chorionic Gonadotropin (hCG), chorionic corticotropin, oestrogens and progesterone.
Hormone, human chorionic gonadotropin, is secreted by
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Placenta
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Ovary
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Anterior pituitary gland
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Posterior pituitary gland
The placenta is a cushion like tissue which supports the embryo and facilitates the supply of oxygen and nutrients to the embryo and also the removal of carbon dioxide and excretory waste materials produced by the embryo. It also acts as an endocrine tissue and produces several hormones like human chorionic gonadotropin, human placental lactogen, estrogens, progesterone, and relaxin etc.
Find the correct options.
(a) Testosterone influences male secondary sexual characters.
(b) Gestation period in Rabbit is about 276 days.
(c) The bulbourethral gland secretes a vaginal lubricant.
(d) Placenta secretes estrogen.
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b, c
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c, d
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a, d
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a, b
A) Testosterone is the male hormone which helps in the formation of sperms and male secondary sexual characters.
Identify the placental hormone
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Insulin
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Vasopressin
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Somatotropic hormone
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Human chorionic gonadotropin (hCG)
Human chorionic hormone (hCG) is placental hormone concerning with maintenance of pregnancy.
Placenta produces
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GH
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ACTH
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Progesterone
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Gastrin
- GH and ACTH are secreted by the cells of the anterior pituitary.
- Gastrin hormone is produced by the parietal cells of the stomach and aids in gastric mobility.
- The growing placenta produces progesterone prevents the shedding of the uterine lining since this would result in pregnancy loss. It also suppresses the ability of the muscular layer of the uterine wall to contract, which is important in preventing labour from occurring before the end of pregnancy.
- So, the correct option is 'Progesterone'.
Chorionic gonadotropin is secreted by
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Pituitary
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Ovary
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Placenta
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Uterus
During implantation of the zygote in the uterus, the chorionic villi and the uterine endometrium become interdigitated with each other and form the placenta. The placenta supplies oxygen/nutrients to the developing fetus and also removes carbon dioxide and waste products from the fetus. Placenta also acts as an endocrine tissue and secretes several hormones like Human Chorionic Gonadotropin (hCG), human placental lactogen (hPL), estrogen, progesterone etc.
Human chorionic gonadotropin is secreted by
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Chorion
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Amnion
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Corpus luteum
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Placenta
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Ovaries
The placenta is an organ, that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination etc. hCG is human chorionic gonadotropin hormone, that can be found in maternal blood and urine shortly after implantation has occured. hCG is present only during pregnancy as it is secreted by the placenta. The syncytical layer of chorionic villi of placenta secretes hCG.
Thus, the correct answer is option (D).
Chorionic gonadotropic hormone is secreted by
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Ovary
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Pituitary
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Uterus
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Placenta
- The hormone human chorionic gonadotropin (hCG) is produced during pregnancy.
- It is made by cells formed in the placenta, which nourishes the egg after it has been fertilized and becomes attached to the uterine wall.
- Its levels can first be detected by a blood test about 11 days after conception and about 12-14 days after conception by a urine test.