Human Reproduction Test

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Human Reproduction Test - 78

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Weekly Quiz Competition

Question 1
1 / -0

What is the total number of seminiferous tubules found in humans?

A
750 - 1200

B
200 - 300

C
1500 - 2000

D
25 - 30

Solution

Seminiferous tubules are located within the testis and is a location of meiosis. On average, they have 50 cm length and is heavily coiled. Generally, 750-1200 seminiferous tubules are seen in a human. Their functions are to produce sperm, maintain them and store them.
So the correct range is '750-1200'.
Question 2
1 / -0

The vas deferens connects the ______________.

A
Ureter to seminal vesicles

B
Epididymis to urethra

C
Epididymis to ureter

D
Epididymis to testis
Question 3
1 / -0

In human, the unpaired male reproductive structure is

A
seminal vesicle

B
prostate gland

C
bulbourethral gland

D
testes

E
vas deferens

Solution

The prostate gland is an unpaired gland in the male reproductive structure, that is an accessory gland. It is a glandular structure present around the neck of the urinary bladder. The seminal vesicles and the bulbourethral glands are paired accessory glands.
Question 4
1 / -0

If the sperm count of a human male is 200 million per ejaculate, then how many sperms should have at least normal shape, size and vigorous motility for normal fertility?

A
120 million

B
48 million

C
80 million

D
60 million

Solution

Out of the total sperms released per ejaculate, at least 60% of them should have a normal shape and show normal motility or forward movement. If the total sperm count is 200 million per ejaculate, at least 120 million out of those should have a normal shape and show normal motility or forward movement for the sperm count to be considered normal and healthy.
So, the correct answer is '120 million'.
Question 5
1 / -0

Which of the following depicts the correct pathway of transport of sperms?

A
Rete testis $$\rightarrow$$ Efferent ductules $$\rightarrow$$ Epididymis $$\rightarrow$$ Vas deferens

B
Rete testis $$\rightarrow$$ Epididymis $$\rightarrow$$ Efferent ductules $$\rightarrow$$ Vas deferens

C
Rete testis $$\rightarrow$$ Vas deferens $$\rightarrow$$ Efferent ductules $$\rightarrow$$ Epididymis

D
Efferent ductules $$\rightarrow$$ Rete testis $$\rightarrow$$ Vas deferense $$\rightarrow$$ Epididymis
Solution
Correct Option: A
Explanation:
- The efferent ducts connect the rete testis with the initial section of the epididymis.
- Along the epididymis, sperm passes from the final section of the epididymis to the vas deferens.
Hence, the correct pathway of transport of sperms:
Rete testis → Efferent ductules → Epididymis → Vas deferens
Question 6
1 / -0

What is the correct sequence of sperm formation?

A
Spermatogonia, spermatozoa, spermatocyte, spermatid

B
Spermatogonia, spermatocyte, spermatid, spermatozoa

C
Spermatid, spermatocyte, spermatogonia, spermatozoa

D
Spermatogonia,spermatocyte, spermatozoa, spermatid.

Solution

Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis.
So the correct option is ' Spermatogonia, Spermatocyte, Spermatid, Spermatozoa'.
Question 7
1 / -0

In the diagram of implanatation of blastocyst, choose the correct match

A
A = Blastocyst cavity, B = Trophoblast, C = Inner cell mass, D = Endometrium of uterus

B
A = Trophoblast, B =Blastocyst cavity, C = Inner cell mass, D = Endometrium of uterus

C
A = Blastocyst cavity, B = Trophoblast, C = Endometrium of uterus, D = Inner cell mass

D
A = Inner cell mass, B = Trophoblast, C = Endometrium of uterus, D = Blastocyst cavity

Solution

Implantation of blastocyst is the stage when the developing embryo called the blastocyst moves through the uterus and makes contact with the uterine walls. This happens at around 6-7 days after fertilisation. During this stage the cells differentiate into two types of cells, the outer layer of cells called the trophoblast layer (marked A in the diagram) and the group of inner rounded, internally located cells called the inner cell mass cells (marked C). The space or cavity formed by the separation of the two types of cells is known as the blastocyst cavity or blastocoel (marked B). The blastocyst embeds itself in the endometrium of the uterine wall (marked D). So, the correct option is 'A= Trophoblast, B = Blastocyst cavity, C = Inner cell mass, D = Endometrium of uterus'.
Question 8
1 / -0

All the following occurs during natural menopause except?

A
Progesterone levels in blood increases

B
Estrogen levels in blood increases

C
Both A and B

D
FSH and LH levels in blood increases

Solution

Menopause is the time when menstrual cycles permanently cease. Symptoms of menopause include irregular periods, hot flashes, vaginal dryness, mood swings. During natural menopause, estrogen and progesterone levels in the blood decrease. However, the levels of FSH and LH in blood increase during this time. High levels of FSH are an indicator of the perimenopause period.

Thus, the correct answer is option C.
Question 9
1 / -0

The basis of the Sertoli cells adheres to the basal lamina and their apical ends frequently expand into the .......... of the seminiferous tubules.

A
Surface

B
Lumen

C
Outer membrane

D
Inner layer

Solution

Sertoli cells are the somatic cells present in the testes. They are involved in the formation of testes and in spermatogenesis. The bases of the Sertoli cells adhere to the basal lamina and their apical ends frequently expand into the lumen of the seminiferous tubules.
So, the correct answer is 'Lumen'.
Question 10
1 / -0

The number of chromosomes in the spermatozoa of human beings is

A
$$1$$

B
$$2$$

C
$$23$$

D
$$46$$

Solution

Spermatogeneis is production of sperms by spermatogonia. Spermatogonia with 46 chromosomes undergoes mitosis differentiation producing primary spermatocytes. These undergo 1st meiotic division producing secondary spermatocytes having 23 chromosomes. Spermatids are produced by secondary spermatocytes by 2nd meiotic division. Spermatids undergo differentiation and producing spermatozoa with 23 number of chromosomes.
So, the correct option is '23'.

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Human Reproduction Test - 78

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Human Reproduction Test - 78

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SHARING IS CARING

Question 1

750 - 1200

200 - 300

1500 - 2000

25 - 30

Solution

Question 2

Ureter to seminal vesicles

Epididymis to urethra

Epididymis to ureter

Epididymis to testis

Question 3

seminal vesicle

prostate gland

bulbourethral gland

testes

vas deferens

Solution

Question 4

120 million

48 million

80 million

60 million

Solution

Question 5

Rete testis $$\rightarrow$$ Efferent ductules $$\rightarrow$$ Epididymis $$\rightarrow$$ Vas deferens

Rete testis $$\rightarrow$$ Epididymis $$\rightarrow$$ Efferent ductules $$\rightarrow$$ Vas deferens

Rete testis $$\rightarrow$$ Vas deferens $$\rightarrow$$ Efferent ductules $$\rightarrow$$ Epididymis

Efferent ductules $$\rightarrow$$ Rete testis $$\rightarrow$$ Vas deferense $$\rightarrow$$ Epididymis

Solution

Question 6

Spermatogonia, spermatozoa, spermatocyte, spermatid

Spermatogonia, spermatocyte, spermatid, spermatozoa

Spermatid, spermatocyte, spermatogonia, spermatozoa

Spermatogonia,spermatocyte, spermatozoa, spermatid.

Solution

Question 7

A = Blastocyst cavity, B = Trophoblast, C = Inner cell mass, D = Endometrium of uterus

A = Trophoblast, B =Blastocyst cavity, C = Inner cell mass, D = Endometrium of uterus

A = Blastocyst cavity, B = Trophoblast, C = Endometrium of uterus, D = Inner cell mass

A = Inner cell mass, B = Trophoblast, C = Endometrium of uterus, D = Blastocyst cavity

Solution

Question 8

Progesterone levels in blood increases

Estrogen levels in blood increases

Both A and B

FSH and LH levels in blood increases

Solution

Question 9

Surface

Lumen

Outer membrane

Inner layer

Solution

Question 10

$$1$$

$$2$$

$$23$$

$$46$$

Solution

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