Tag: what happens if an egg is not fertilized?

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Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

A human female reaches menopause around the age of

  1. 50 years

  2. 17 years

  3. 70 years

  4. 25 years.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Menopause marks the end of a woman's fertility and the cease of the menstrual cycle. The ovaries stop producing hormones and in humans, the menstrual cycle ceases at around 50 years of age. 

So, the correct answer is '50 years'. 

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

The phase of menstrual cycle in humans that last for 7-8 days, is

  1. Follicular phase

  2. Ovulation phase

  3. Luteal phase

  4. Menstruation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The follicular phase (also known as the proliferative phase) typically lasts from the end of menstruation until ovulation, spanning about 7 to 8 days or longer depending on cycle length. Other phases like ovulation are much shorter, and the luteal phase is generally fixed at 14 days.

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

During proliferative phase uterine wall undergoes certain changes, these are _________________.

  1. Myometrium wall is sloughed off

  2. Endometrium wall is sloughed off

  3. Blood vessels in endometrium become long and coiled

  4. Proliferation of myometrial epithelial lining
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

During the proliferative phase, the endometrium of the uterus becomes thicker as blood vessels become long and coiled.

So, the correct answer is C.

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

Which of the following statements concerning menopause is correct?

  1. Menopause occurs because all of the female's follicles become hormone-producing corpus luteum at once

  2. Menopausal symptoms are a result of decrease in the production of FSH and LH

  3. The onset of menopause is primarily due to follicle atresia

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Follicular atresia means degeneration of follicles. Thus, if all follicles get degenerated at the age of 45-50 years, there will be no ovulation and hence no menstruation which leads to menopause.

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

A woman who is not having a menstrual cycle, which one of the following is the most likely root cause of this?

  1. Maintenance of the hypertrophical endometrial lining

  2. Maintenance of high concentration of sex-hormones in the blood stream

  3. Retention of well-developed corpus luteum

  4. Fertilisation of the ovum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When an ovum is fertilized, the corpus luteum is maintained to produce progesterone, which prevents the shedding of the endometrium and thus stops the menstrual cycle. This is the primary biological reason for the cessation of menstruation during pregnancy.

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

Though the total number of follicles in the ovaries of a normal young woman is about 4,00,00. The duration between menarche and menopause is limited. This is attributed to the

  1. Follicular atresia

  2. Liquor folliculi

  3. Follicular proliferation

  4. Follicular plasticity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Follicular atresia is the breakdown of the ovarian follicles, which consist of an oocyte surrounded by granulosa cells and internal and external theca cells. This is the reason, the female born with more than 4,00,000 eggs have a limited period between menarche and menopause.

So, the correct option is 'Follicular atresia'

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

In human females, menstrual cycle ceases around $50$ years of age. It is termed as

  1. Menopause

  2. Menarche

  3. Diapause

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In human females endometrium (the innermost layer of the uterus) undergoes cyclical changes every month which is known as menstruation. It starts at the age of puberty, this beginning is called menarche. Human females can only reproduce till 45 to 50 years of age. When the menstruation stops it is called menopause.

So, the correct option is 'menopause'.

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

A $55$ years old female was analyzed for her hormonal status. Some hormones are increased in blood and excreted in urine. These hormones are

  1. Estrogen, progesterone and $FSH$
  2. Progesterone and $LH$
  3. $LH$ and $FSH$
  4. Estrogen and $FSH$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In females, the post-reproductive phase of menopause begins from the age of 45 years approximately. In this phase, the primary follicles are not available that can be developed under the effect of FSH. When follicles do not develop, ovulation cannot occur under the effect of LH. There is no corpus luteum formed, so there will be no progesterone. As there is no progesterone, the endometrium stops building up. Due to this, there are no menses occurring. Since FSH and LH are released by the pituitary gland, they would be un-used and excreted in urine.

Hence, the correct answer is 'LH and FSH'