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प्रश्न
The luteal phase of the menstrual cycle is also called the secretory phase. Give reason.
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उत्तर
In leutal phase LH and FSH decrease, corpus luteum produces progesterone and its level increases followed by decline progesterone also stimulates the glands in the uterus to secrete substances that maintain the endometrium and keep it from breaking down. For this reason, this phase of the menstrual cycle is called the secretory phase.
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संबंधित प्रश्न
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).
Give a significant point of difference between the oestrous and menstrual cycles.
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.
Give Reasons
Missing of menses is the first indication of pregnancy.
Level of which hormones are at their highest during the luteal phase (second half of the cycle) of the menstrual cycle?
Which one of the following events is correctly matched with the time period in a normal menstrual cycle?
The main function of mammalian corpus luteum is to produce ______.
The growth of corpus luteum is initiated by:
What role does pituitary gonadotropins play during follicular and ovulatory phases of menstrual cycle? Explain the shifts in steroidal secretions.
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.
