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प्रश्न
A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.
Women experiences two major events in their life time one at menarche and the second at menopause. Mention the characteristics of both the events.
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उत्तर
Menarche:
- It is the first menstrual flow in a girl’s life.
- Occurs between age 11 to 13 years.
- Marks the beginning of reproductive phase.
- Indicates onset of puberty and ovulation begins.
Menopause:
- It is the permanent cessation of menstrual cycles.
- Occurs between age 45 to 50 years.
- Ovarian follicles stop responding to pituitary hormones.
- Ovulation and menstruation cease; fertility ends.
- Estrogen levels fall, causing physical and psychological changes.
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संबंधित प्रश्न
Explain the menstrual phase in a human female. State the levels of ovarian and pituitary hormones during this phase.
Name the function of the following:
Corpus luteum
Draw a graafian follicle and label antrum and secondary oocyte.
the biological/technical terms for Fixing of developing zygote on the uterine wall.
Mention one significant difference between Hormones of ovulatory phase and hormones of luteal phase
Give a significant point of difference between the oestrous and menstrual cycles.
Give appropriate biological or technical terms for the following:
The onset of menstruation in a young girl
Give appropriate terms for each of the following process:
Fixing of developing zygote (blastocyst) on the uterine wall.
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.
Briefly describe the secretory phase of the menstrual cycle.
Name the Following
The onset of menstruation in a young girl at about the age of 13 years.
Name the Following
The term used when females stop menstruation at the age of 45-50 years.
Multiple Choice Question:
The onset of menstruation in the female is termed
Explain the ovarian cycle with its different phases.
Why menstrual cycle does not take place before puberty and during pregnancy?
The menstrual cycle ceases during pregnancy.
Identify the phase of the menstrual cycle during which there is a peak in the level of progesterone.
Corpus luteum produces ______.
Ovulation in the human female normally takes place during the menstrual cycle ______.
Corpus luteum ______.
Proliferative phase of menstrual cycle, is also called ______.
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 ______
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. |
Subject 2 has a higher level of hormone B, which is ______
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. |
If the peak of Hormone A does not appear in the study for Subject 1, which of the following statement is true?
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. |
Which structure in the ovary will remain functional in subject 2?
In case the ova does not fertilize, which of the following events will take place?
The level of progesterone is high at which phase in the menstrual cycle?
Given below is a flow chart showing ovarian changes during menstrual cycle. Fill in the spaces giving the name of the hormones responsible for the events shown.
