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Question
What is menstrual cycle?
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Solution
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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RELATED QUESTIONS
Explain the menstrual phase in a human female. State the levels of ovarian and pituitary hormones during this phase.
Complete the following by filling in the blanks 1 to 5 with appropriate words:
The human female gonads are ovaries. A maturing egg in the ovary is present in a sac of cells called ______ (1). As the egg grows larger, the follicle enlarges and gets filled with a fluid and is now called the ______ (2) follicle. The process of releasing the egg from the ovary is called ______ (3). The ovum is picked up by the oviducal funnel and fertilization takes place in the ______ (4). In about a weak the blastocyst gets fixed in the endometrium of the uterus and this process is called ______ (5).
Briefly describe the secretory phase of the menstrual cycle.
Give Reasons
The chances of pregnancy to occur are most favourable on or about the 14th day of the menstrual cycle. Explain.
Multiple choice question.
Rupturing of follicles and discharge of ova is known as _______.
Describe the phases of the menstrual cycle and their hormonal control.
Meanrch, menstrual cycle, and menopause are controlled by ______.
Why menstrual cycle does not take place before puberty and during pregnancy?
What are the phases of the menstrual cycle? Indicate the changes in the ovary and uterus.
Find the wrongly matched pair.
Match the Columns.
| Column I | Column II | ||
| i. | Proliferative phase | a. | Breakdown of the endometrial lining |
| ii. | Secretory phase | b. | Follicular phase |
| iii. | Menstruation | c. | Luteal phase |
How long does the secretory phase of the menstrual cycle last?
Which hormone is secreted by the developing secondary follicles?
Corpus luteum develops under the influence of ______.
Which one of the following is the correct matching of the events occurring during menstrual cycle?
Mature Graafian follicle is generally present in the ovary of a healthy human female around stet ______.
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 ______.
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 ______
In case the ova does not fertilize, which of the following events will take place?
Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower.
Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.
Menstruation normally occurs once in ______.
The secretory phase in the human menstrual cycle is also called:
Complete the table:
| Number | Type | No. of pairs | Region |
| C1C8 | Cervical | ______ | Neck |
| T1T12 | ______ | 12 pairs | ______ |
| L1L5 | Lumbar | ______ | Lower back |
| S1S5 | ______ | 5 pairs | ______ |
| CO1 | Coccygeal | ______ | ______ |
Name the following:
The permanent stoppage of menstruation in human females around the age of 45 years.
The onset of menstruation in women is called ______.
Given below is a group of terms. In the group, one pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.
Follicular phase: 5-12 days:: Luteal phase : ______ days.
At what age does menopause typically occur?
How many phases does the menstrual cycle consist of?
Which of the following organs primarily undergo cyclic changes during the menstrual cycle?
