Question

A temporary endocrine gland in the human body is
(a) Corpus allatum
(b) Pineal gland
(c) Corpus cardiacum
(d) Corpus luteum

Answer 1

Hint: A yellow colored temporary endocrine gland formed from an empty Graffian follicle during the pregnancy stage in the woman. It secretes the estrogens and progesterone hormone, which performs many important functions during the state of pregnancy.

Complete answer:
The Corpus luteum is a temporary endocrine gland in the human body because it is only formed during pregnancy conditions in the woman. It develops after the ovulation from a ruptured follicle during the luteal phase (a stage in the menstrual cycle) .
- The luteal phase of the menstrual cycle is the time when the body prepares for the implantation of a fertilized egg.
- The corpus luteum is formed in an ovary at the site of a follicle, or sac,
- The corpus luteum continues to produce progesterone until the fetus is producing adequate levels to sustain the pregnancy.
- The corpus luteum is maintained by the pregnancy hormone human chorionic gonadotropin or HCG.
- The corpus luteum starts to decrease in size at around 10 weeks of pregnancy.
- The Graafian follicle is responsible for the maturation of the oocytes and the release of fertilizable oocytes.
- In mammals having an oestrus cycle, the follicle enlarges during the early part of the cycle. The follicle cells divide into two layers, one around the oocyte and the other an external layer, until the follicle bursts onto the surface of the ovary, discharging the oocyte (ovulation) .

So, the correct answer is, ‘Corpus luteum.’

Note: When fertilization or implantation does not occur, the corpus luteum starts to break down. This causes a decline in the estrogen and progesterone levels and leads to the start of another menstrual period.