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प्रश्न
What is menstrual cycle?
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उत्तर
The menstrual cycle is the cyclic change of the reproductive tract of a primate female. This period is marked by a characteristic event repeated almost every month (28 days with minor variation) in the form of a menstrual flow (i.e., shedding of the endometrium of the uterus with bleeding). Only during pregnancy does it temporarily cease.
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संबंधित प्रश्न
Explain menstrual cycle in human females.
How can the scientific understanding of the menstrual cycle of human females help as a contraceptive measure?
Give appropriate terms for each of the following process:
Fixing of developing zygote (blastocyst) on the uterine wall.
Explain the ovarian and uterine events that occur during a menstrual cycle in a human female under the influence of pituitary and ovarian hormones respectively.
Observe the figure and answer the questions given below.
a) What does the above figure indicate?
b) Which human organs are involved in this process?
c) Name the hormones responsible for this process.
d) After how many days these repetitive changes take place?
e) ‚A woman should stay away from others, as her body is impure during this process.‛ What is your opinion about this statement? Elaborate it.
Complete the following sentences with appropriate word:
The human gestation period is about ____________.
Multiple Choice Question:
The onset of menstruation in the female is termed
What is the menstrual cycle?
State the names of four hormones which control menstrual cycle.
Painful menstruation is termed as ____________.
Answer the following type of question Assertion (A) and Reason (R).
(A) - Ovulation is the release of the ovum from the Graafian follicle.
(R) - It occurs during the follicular phase of the menstrual cycle.
The temporary endocrine gland in humans is ______.
Corpus luteum develops under the influence of ______.
Menstruation is triggered by a sudden decline in the amount of hormone secreted by corpus luteum. Identify the hormone.
Corpus luteum develops from ______.
Which one of the following events is correctly matched with the time period in a normal menstrual cycle?
Proliferative phase of menstrual cycle, is also called ______.
A biology student after studying the different levels of hormones during the menstrual cycle was comparing 2 subjects (Patients). A table was created after looking at the levels of hormones A and B for Subjects 1 and 2. Read the information in the table and answer the question that follows.
| HORMONE A | HORMONE B | |
| Subject 1 | Shows a peak on the 14th Day of the menstrual cycle. | Falls down during the luteal phase. |
| Subject 2 | Shows a peak on the 14th Day of the menstrual cycle. | The level is maintained high in the luteal phase. |
The peak observed in Subject 1 and 2 is due to ______
Menstrual flow occurs due to lack of ______.
The secretory phase in the human menstrual cycle is also called:
About which day in a normal human menstrual cycle does rapid secretion of LH (Popularly called LH Surge) normally occurs?
Mention the importance of LH surge during menstrual cycle.
Describe hormonal control in various phases of the menstrual cycle.
In the figure given below, parts A and B show the level of hormones which influence the menstrual cycle. Study the figure and answer the questions that follow:
- Name the organs which secrete the hormones represented in parts A and B.
- State the impact of the hormones in part B on the uterus of the human female during 6 to 15 days of the menstrual cycle.
Spermatogenesis is induced by ______.
Write a short note on Secretory Phase.
The egg is passed down through the oviduct by muscular contractions.
The onset of menstruation in women is called ______.
Name these:
4 phases of the menstrual cycle.
