Tag: reproductive system of human

Questions Related to reproductive system of human

Progesterone is secreted by

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

  1. Corpus aorta

  2. Corpus albicans

  3. Corpus luteum

  4. Corpus callosum

Show answer
Correct Option: C
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. 

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

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

  1. PRL, OT and LH

  2. OT, PRL and FSH

  3. LH, PRL and FSH

  4. PRH, OT and LH

Show answer
Correct Option: B
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'.

The secretion of progesterone by corpus luteum is initiated by

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

  1. FSH

  2. LH

  3. MSH

  4. Thyroxine

Show answer
Correct Option: B
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. 

An unfertilized human egg would have

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

  1. Two X - chromosome

  2. One X - chromosome

  3. One Y - chromosome

  4. Both X and Y - chromosome

Show answer
Correct Option: B
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. 

The correct set of a single endocrine gland hormone is

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

  1. Oxytocin, prolactin, ACTH

  2. Oxytocin, vasopressin, ADH

  3. Thyroxin, secretin, ACTH

  4. Epinephrin, cortisol, ICSH

Show answer
Correct Option: B
Explanation:

Oxytocin and ADH is secreted from posterior pituitary, vasopressin is another name of ADH.

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

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

  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.

Show answer
Correct Option: B,D
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.

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

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

  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. $B\rightarrow A\rightarrow C\rightarrow D \rightarrow E$

Show answer
Correct Option: B

A female gland corresponding to prostate gland of males is

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

  1. Bartholin's gland

  2. Bulbourethral gland

  3. Clitoris

  4. None of the above

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Correct Option: D

Progesterone is secreted by

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

  1. Corpus luteum

  2. Corpus albicans

  3. Leyding cells

  4. Graafian cells

Show answer
Correct Option: A
Explanation:

Progesterone is secreted by the corpus luteum for maintenance of the endometrial lining. Corpus luteum is formed from the remains of the matured Graafian follicle.

So the correct answer is A.

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

menstruation is not taking place in regularly cycling human female ?

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

  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

Show answer
Correct Option: B