Human Reproduction Test

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Human Reproduction Test - 79

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements can be related to Leydig cells?

A
They stimulate spermatogenesis.

B
They stimulate oogenesis.

C
They promote lactation.

D
None of the above

Solution

Leydig cells, also known as interstitial cells of Leydig, are found adjacent to the seminiferous tubules in the testicle. They produce testosterone in the presence of luteinizing hormone (LH). In the absence of testosterone, spermatogenesis does not proceed beyond the meiosis stage. Thus, Leydig cells stimulate spermatogenesis by producing testosterone which stimulates spermatogenesis.
So, the correct answer is 'They stimulate spermatogenesis'.
Question 2
1 / -0

Sperms are stored and nourished inside

A
Cowper's gland

B
Epididymis

C
Seminiferous tubules

D
Vasa efferentia

Solution

Epididymis is a long and a coiled tube that receives sperms from the vasa efferentia. It leads to the vas deferens. It is responsible for storing and nourishing the sperms until they are moved further to the vas deferens. Thereafter, the secretions of the prostate gland and the seminal vesicles will provide nourishment to the sperms. So, the correct answer is 'Epididymis'
Question 3
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Which one of the following is the correct route that a sperm follows when it leaves the testis of a mammal?

A
Vas deferens $$\rightarrow$$ Epididymis $$\rightarrow$$ Urethra

B
Urethra $$\rightarrow$$ Epididymis $$\rightarrow$$ Vas deferens

C
Epididymis $$\rightarrow$$ Urethra $$\rightarrow$$ Vas deferens

D
Epididymis $$\rightarrow$$ Vas deferens $$\rightarrow$$ Urethra
Solution
- From the testis, sperms are collected by the vasa efferentia which transfer them to the epididymis through rete testis.
- Vasa efferentia open in the anterior end of testis which is known as caput epididymis. The middle part is known as corpus epididymis and posterior part is known as cauda epididymis. Sperms pass all these parts of the epididymis and take several days.
- From the cauda epididymis arises the vas deferens which ascends to abdomen and passes over the urinary bladder. The duct from the seminal vesicle joins the vas deferens behind the urinary bladder and form the ejaculatory duct.
- The ejaculatory duct passes through the prostate and open into urethra after its origin from the urinary bladder.
Hence, the route that a sperm follows when it leaves the testis of a mammal is Epididymis, Vas deferens, Urethra.
So, the correct answer is 'Epididymis → Vas deferens → Urethra'.
Question 4
1 / -0

Functional maturation of sperms take place in

A
Seminal vesicles

B
Epididymis

C
Vas deferens

D
Somniferous tubule

Solution

Spermatogenesis initially takes place in the testes (seminiferous tubules) and progress to the epididymis where the sperms are stored until ejaculation. Spermatozoa acquire their fertilizing ability and forward motility during the epididymal transit. This process takes about 2-3 days in humans. Hence, the correct answer is 'Epididymis'.
Question 5
1 / -0

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

A
Estrogen, progesterone and $$FSH$$

B
Progesterone and $$LH$$

C
$$LH$$ and $$FSH$$

D
Estrogen and $$FSH$$

Solution

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'
Question 6
1 / -0

Vasa deferentia receives a duct from .....A..... and opens into the .....B..... as the ejaculatory duct. A and B in the above statement is

A
A - Vas deferens; B - Urinary bladder

B
A - Seminal vesicles; B - Urethra

C
A - Urethra; B - Seminal vesicles

D
A - Urethra; B - Urinary bladder

Solution

The distal portion of ductus deferns( the ampula) receives a duct draining from the seminal vesicle-forming the short ejaculatory duct. These ducts converge to join the urethra, as they pass through the prostate gland.

So, the correct answer is "A- Seminal vesicles; B- Urethra".
Question 7
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Current sequence in development is :

A
Fertilization $$\rightarrow$$ Zygote $$\rightarrow$$ Cleavage $$\rightarrow$$ Morula $$\rightarrow$$ Blastula $$\rightarrow$$ Gastrula

B
Fertilization $$\rightarrow$$ Zygote $$\rightarrow$$ Blastula $$\rightarrow$$ Morula $$\rightarrow$$ Cleavage $$\rightarrow$$ Gastrula

C
Fertilization $$\rightarrow$$ Cleavage $$\rightarrow$$ Morula $$\rightarrow$$ Zygote $$\rightarrow$$ Blastula $$\rightarrow$$ Gastrula

D
Cleavage $$\rightarrow$$ Zygote $$\rightarrow$$ Fertilization $$\rightarrow$$ Morula $$\rightarrow$$ Blastula $$\rightarrow$$ Gastrula

Solution

The fertilization of a male and female garment results in the production of a zygote which is a single diploid cell. Zygote and undergoes cleavage and hence divide mitotically.
When 10 to 30 cells are present together it is known as a morula.
After morula is formed a blastecoel cavity starts forming with further division.
the morula is converted into a blastula by a process known as blastulation. Theblastula consists of spherical layers filled with fluid.
The blastula then finally converts into a gastrula in which the germ layers of the embryo are formed.
So the correct answer is ' Fertilization --> Zygote --> Cleavage --> Morula --> Blastula --> Gastrula '.
Question 8
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Read the following regarding male accessory glands and select the incorrect option.

A
One pair of seminal vesicles are present.

B
One pair of bulbourethral glands are present.

C
One pair of prostrate gland are present.

D
All of the above
Question 9
1 / -0

In tracing the path of sperm from testis to outside, you would mention the vas deferens before the

A
Testes

B
Epididymis

C
Urethra

D
Uterus

Solution

In the male reproductive system, spermatozoa released from the seminiferous tubules move to the rete testis, then via the vasa efferentia, they move to the epididymis where they are stored. On the event of copulation, they travel through the vas deferens into the ejaculatory duct and are then released via the urethra.
So, the correct answer is 'Urethra'.
Question 10
1 / -0

Which of the following is the correct order so as to be in a logical sequence?

A
Implantation, Ovulation, Child birth, Gestation, Fertilisation.

B
Coitus, Ovum, Sperm, Sperm duct, Urethra, Vagina.

C
Sperm duct, Penis, Testes, Sperms, Semen.

D
Puberty, Menopause, Menstruals, Menarche, Reproductive age.

E
Graafian Follicle, Ovum, Fallopian Tube, Uterus.

Solution

A. The release of ovum occurs first, followed by fertilization, implantation in the uterus, gestation in which the foetus develops and then childbirth. So, the correct order is Ovulation, Fertilization, Implantation, Gestation, Childbirth
B. The sperm has to move to the sperm duct and through the act of coitus, it will de be inseminated in the vagina. So, the correct sequence is Sperm, Sperm duct, Urethra, Coitus, Vagina, Ovum.
C. Sperms are made in the testes and move to sperm duct where the secretion of glands combine with sperm to make semen. So, the correct sequence is Testes, Sperms, Sperm duct, Semen, Penis.
D. These are the reproductive stages in human female life-cycle. So, the correct sequence is Puberty, Reproductive age, Menarche, Menstrual, Menopause.
E. These are the phases in the release of the ovum from the ovaries. So, the correct sequence is Graafian Follicle, Ovum, Fallopian Tube, Uterus.

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Human Reproduction Test - 79

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Human Reproduction Test - 79

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SHARING IS CARING

Question 1

They stimulate spermatogenesis.

They stimulate oogenesis.

They promote lactation.

None of the above

Solution

Question 2

Cowper's gland

Epididymis

Seminiferous tubules

Vasa efferentia

Solution

Question 3

Vas deferens $$\rightarrow$$ Epididymis $$\rightarrow$$ Urethra

Urethra $$\rightarrow$$ Epididymis $$\rightarrow$$ Vas deferens

Epididymis $$\rightarrow$$ Urethra $$\rightarrow$$ Vas deferens

Epididymis $$\rightarrow$$ Vas deferens $$\rightarrow$$ Urethra

Solution

Question 4

Seminal vesicles

Epididymis

Vas deferens

Somniferous tubule

Solution

Question 5

Estrogen, progesterone and $$FSH$$

Progesterone and $$LH$$

$$LH$$ and $$FSH$$

Estrogen and $$FSH$$

Solution

Question 6

A - Vas deferens; B - Urinary bladder

A - Seminal vesicles; B - Urethra

A - Urethra; B - Seminal vesicles

A - Urethra; B - Urinary bladder

Solution

Question 7

Fertilization $$\rightarrow$$ Zygote $$\rightarrow$$ Cleavage $$\rightarrow$$ Morula $$\rightarrow$$ Blastula $$\rightarrow$$ Gastrula

Fertilization $$\rightarrow$$ Zygote $$\rightarrow$$ Blastula $$\rightarrow$$ Morula $$\rightarrow$$ Cleavage $$\rightarrow$$ Gastrula

Fertilization $$\rightarrow$$ Cleavage $$\rightarrow$$ Morula $$\rightarrow$$ Zygote $$\rightarrow$$ Blastula $$\rightarrow$$ Gastrula

Cleavage $$\rightarrow$$ Zygote $$\rightarrow$$ Fertilization $$\rightarrow$$ Morula $$\rightarrow$$ Blastula $$\rightarrow$$ Gastrula

Solution

Question 8

One pair of seminal vesicles are present.

One pair of bulbourethral glands are present.

One pair of prostrate gland are present.

All of the above

Question 9

Testes

Epididymis

Urethra

Uterus

Solution

Question 10

Implantation, Ovulation, Child birth, Gestation, Fertilisation.

Coitus, Ovum, Sperm, Sperm duct, Urethra, Vagina.

Sperm duct, Penis, Testes, Sperms, Semen.

Puberty, Menopause, Menstruals, Menarche, Reproductive age.

Graafian Follicle, Ovum, Fallopian Tube, Uterus.

Solution

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