Tag: reproductive system of human

Quizzes (3) Questions (51)

Questions Related to reproductive system of human

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Progesterone is secreted by

  1. Corpus aorta

  2. Corpus albicans

  3. Corpus luteum

  4. Corpus callosum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Progesterone is produced in large amounts in the ovaries by the corpus luteum. It begins producing at the stage of puberty and produced till menopause. It is involved in the menstrual cycle, pregnancy and embryogenesis of humans and other species. 

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

The hormone that initiates ejection of milk, stimulates milk production and growth of ovarian follicles are respectively known as

  1. PRL, OT and LH

  2. OT, PRL and FSH

  3. LH, PRL and FSH

  4. PRH, OT and LH
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
I. Ejection of milk is stimulated by the hormone oxytocin (OT).
II. Milk production is stimulated by the hormone prolactin (PRL).
III. Growth of ovarian follicles is maintained by the hormone Follicle Stimulating Hormone (FSH).
So, the correct answer is 'OT, PRL and FSH'.
Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

The secretion of progesterone by corpus luteum is initiated by

  1. FSH

  2. LH

  3. MSH

  4. Thyroxine
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The luteal phase is marked by the increased concentration of the luteinizing hormone. The LH stimulates the corpus luteum to secrete progesterone which helps in the maintenance of the pregnancy by increasing the thickening of the cell lining of the endometrial wall. 

Thus, the correct answer is option B. 

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

An unfertilized human egg would have

  1. Two X - chromosome

  2. One X - chromosome

  3. One Y - chromosome

  4. Both X and Y - chromosome
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The gametes are the haploid cells which are produced by the meiotic division. The egg is the female gamete which is produced through oogenesis. The gametes are haploid and contain only one set of the chromosome. So, the egg cell contains the 22 autosomes and one X chromosome. Since the female somatic cell contains two X chromosome, there will be only one X chromosome in the gamete.

Thus, the correct answer is option B. 

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was

  1. High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo.

  2. High level of circulating hCG to stimulate endometrial thickening.

  3. High level of FSH and LH in uterus to stimulate endometrial thickening.

  4. High level of circulating hCG to stimulate estrogen and progesterone synthesis.
Reveal answer Fill a bubble to check yourself
B,D Correct answer
Explanation

After implantation of blastocyst (pregnancy), the placenta produces the hormone hCG (human chorionic gonadotropin) hCG promotes the maintenance of the corpus luteum to secrete the hormone progesterone and estrogen. High levels of hCG stimulates endometrial thickening also.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Some important events in the human female reproductive cycle are given below. Arrange the events in a proper sequence.
A : Secretion of FSH
B : Growth of corpus luteum
C : Growth of the follicle and oogenesis
D : Ovulation 
E : Sudden increase in the levels of LH

  1. $C\rightarrow A\rightarrow D\rightarrow B \rightarrow E$
  2. $A\rightarrow C\rightarrow E\rightarrow D \rightarrow B$
  3. $A\rightarrow D\rightarrow C\rightarrow E \rightarrow B$
  4. $B\rightarrow A\rightarrow C\rightarrow D \rightarrow E$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sequence is: FSH secretion (A) leads to follicle growth (C), which leads to high estrogen and LH surge (E), causing ovulation (D), followed by the formation of the corpus luteum (B).

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

A female gland corresponding to prostate gland of males is

  1. Bartholin's gland

  2. Bulbourethral gland

  3. Clitoris

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

The prostate gland in males contributes to seminal fluid. The female equivalent, often cited as having similar embryological or functional roles, is the Skene's gland (paraurethral gland), not Bartholin's or Bulbourethral glands.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Which one of the following is the most likely root cause why

menstruation is not taking place in regularly cycling human female ?

  1. Retention of well-developed corpus luteum

  2. Fertilization of the ovum

  3. Maintenance of the hypertrophical endometrial lining

  4. Maintenance of high concentration of sex-hormones in the blood stream
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Menstruation occurs when the corpus luteum degenerates, leading to a drop in progesterone. If fertilization occurs, the corpus luteum is maintained by hCG, preventing menstruation.