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प्रश्न
Explain the menstrual phase in a human female. State the levels of ovarian and pituitary hormones during this phase.
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उत्तर
(a) The menstrual cycle is the reproductive cycle in all primates and begins at puberty (menarche).
- Menses takes place on the 3rd–5th day of the menstrual cycle of 28 days.
- The production of LH is considerably reduced.
- This causes degeneration of the corpus luteum and reduction in the production of progesterone and oestrogen.
- The uterine endometrium breaks down and menstruation starts.
- Cells of the endometrium, secretions, blood and the unfertilised ovum constitute menstrual flow.
During this phase, the levels of ovarian and pituitary hormones are low.
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संबंधित प्रश्न
the biological/technical terms for Fixing of developing zygote on the uterine wall.
Name the Following
The term used when females stop menstruation at the age of 45-50 years.
What are the phases of the menstrual cycle? Indicate the changes in the ovary and uterus.
The following is the illustration of the sequence of ovarian events (a-i) in a human female.
Explain the changes that occur in the uterus simultaneously in anticipation.
In humans, the menstrual cycle is generally of ______.
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
The peak observed in Subject 1 and 2 is due to ______
The Corpus luteum grows during menstruation.
The secretory phase in the human menstrual cycle is also called:
Describe hormonal control in various phases of the menstrual cycle.
The egg is passed down through the oviduct by muscular contractions.
