Human Reproduction Test

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Human Reproduction Test - 6

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Question 1
1 / -0.25

Sertoli cells are regulated by the pituitary hormone known as

A
LH

B
FSH

C
GH

D
prolactin
Solution
FSH stimulates Sertoli cells of the testes to secrete an androgen liming protein that concentrates testosterone in the seminiferous tubules.
Sertoli cells also secrete a hormone called inhibin which suppresses FSH synthesis.
Question 2
1 / -0.25

If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from

A
testes to epididymis

B
epididymis to vas deferens

C
ovary to uterus

D
vagina to uterus

Solution

Vasa efferentia are fine ciliated ductules that arise from the seminiferous tubules of testis (where sperms are formed) and open into epididymis which is a mass of long narrow closely coiled tubule lying along the inner side of testis. Epididymis stores the sperms. Thus, if vasa efferentia get blocked, sperms will not be transposed from testes to epididymis.
Question 3
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Consider the following three statements related to the human male reproductive system and select the correct option stating which ones are true (T) and which ones are false (F).
(i) Middle piece of spermatozoon is also termed as power house of spermatozoon.
(ii) Vas deferens joins a duct from seminal vesicle and form vasa efferentia.
(iii) Semen is a collection of secretions from the seminal vesicles, prostate gland and Cowper 's glands and sperms from testes.

A
a

B
b

C
c

D
d

Solution

Vas deferens joins a duct from seminal vescile to form ejaculatory duct.
Question 4
1 / -0.25

A sex gland which contributes fluid containing fructose that provides spermatozoa energy for swimming and hormone prostaglandins that stimulate actions in the female reproductive tract to aid sperm-ovum interaction is

A
Cowper 's gland

B
prostate gland

C
seminal vesicle

D
preputial gland

Solution

The seminal vesicles are a pair of sac like structures near the base of the bladder. Their ducts join the vasa deferentia to loan the ejaculatory ducts. They produce an alkaline secretion which contains fructose, prostaglandins and dotting proteins that are different from those in blood. The prostaglandins stimulate uterine contractions and thus may help the sperm to move towards female 's oviducts, where fertilisation takes place. Fructose is present in the seminal fluid and is not produced anywhere else in the body. It provides energy to sperms for moving.
Question 5
1 / -0.25

The nutritive cells found in seminiferous tubules are

A
Leydig 's cells

B
atretic follicular cells

C
Sertoli cells

D
chromaffin cells

Solution

Wall of each seminiferous tubule is formed of a single layered germinal epithelium. Majority of cells in this epithelium are male germ cells and at centain places, there are persent tall Sertoli cells. These cells act as nurse cells providing nutrition to the developing sperms.
Question 6
1 / -0.25

Seminal plasma in humans is rich in

A
Fructose and certain enzymes but poor in calcium

B
Fructose and calcium but has no enzyme

C
Glucose and certain enzymes but has no calcium

D
Fructose, calcium and certain enzymes

Solution

Secretion of seminal vesicle, prostrate gland and bulbourethral gland Constitute seminal plasma which is rich in fructose, calcium and certain enzymes.
Question 7
1 / -0.25

In most mammals, the testes are located in scrotal sac for

A
more space to visceral organs

B
spermatogenesis

C
sex differentiation

D
independent functioning of kidney

Solution

In mammals, scrotal sacs (containing testes) act as thermoregulator, maintaining the temperature of the testes 2^∘ C lower than that of the body. This temperature is required for the spermatogenesis to occur, otherwise, the sperms could be destroyed by high temperature, resulting in sterility.
Question 8
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Read the following statements about the given diagram carefully and state which of them are correct?
(i) A carries urine and C stores sperms.
(ii) B secretes a fluid that helps in the lubrication of penis.
(iii) D produces testosterone but not sperms
(iv) C stores sperms

A
(i) and (ii)

B
(ii) and (iii)

C
(ii) and (iv)

D
(i) and (iv)

Solution

In the given figure, part 'A 'is vs deferens that carries sperms. Part 'B 'is Cowper 's glands that secreate fluid which helps in the lubrication of the penis during copulation. Part 'C 'is epididymis that stores sperms and part 'D 'is testis that produces sperms and testosterone.
Question 9
1 / -0.25

The function of the secretion of prostate gland is to

A
Inhibit sperm activity

B
Attract sperms

C
Stimulate sperm avidity

D
None of these

Solution

The prostate gland is a single large gland that surrounds the urethra. It produces a slightly alkaline, milky secretion which forms 25% of the volume of semen. It possesses citric acid, enzymes (add phosphatase, amylase, pepsinogen) and prostaglandins. Secretion of the prostate gland nourishes and activates the spermatozoa to swim.
Question 10
1 / -0.25

Where is the male reproductive system located?

A
Pectoral region

B
Abdominal region

C
Pelvis region

D
Lumbar region
Solution
The male reproductive system is located in the pelvis region.
It includes a pair of testes along with accessory ducts, glands and the accessory or external genitalia.
Question 11
1 / -0.25

Which one of the following is not a function of sertoli cells?

A
Acting as nurse cell to the sperms.

B
Secreting testicular fluid for transporting sperms to the lumen of the seminiferous tubule.

C
Secreting the hormone inhibin.

D
Forming a manchette.

Solution

Sertoli cells are 'nurse 'cells, which is a part of a seminiferous tubule and helps int he process of spermatogenesis i.e., production of sperms.
Sertoli cells are secretory cells. One of the substances which it secretes is inhibin which is secreted after puberty and work together to regulate FSH regulation.
Sertoli cells continuously secrete fluid that is used for the sperm transport is proximal genital ducts.
Manchette is a conic array of microtubules that invests the nucleus of a spermatid. It plays a role in shaping the nucleus during spermatogenensis.
Thus, the correct answer is option C.
Question 12
1 / -0.25

Prostate glands are located below

A
gubernaculum

B
seminal vesicles

C
epididymis

D
bulbourethral glands

Solution

The prostate gland (small and walnut-shaped) is located beneath the seminal vesicle and secretes a fluid that nourishes and protects sperm. The prostate is just in front of the rectum. The urethra runs through the center of the prostate, from the bladder to the penis, letting urine flow out of the body.
Question 13
1 / -0.25

Which one is correct for mammalian testis?

A
Graffian follicles, Sertoli cells, Leydig cells

B
Graffian follicles, Sertoli cells and Seminiferous tubules

C
Sertoli cells, Seminiferous tubules, Leydig cells

D
Graffian follicles, Leydig 's cells and Seminiferous tubules

Solution

Graafian follicles are present in human ovaries.
Question 14
1 / -0.25

Match each function below with the associated part or parts of the human male reproductive system shown in the figure.
(i) Produces sperm
(ii) Conducts the sperm through the penis to the outside of the body
(iii) Produces seminal fluid
(iv) Connects the epididymis with the urethra

A
(i)-G, (ii)-E, (iii)-A, C, D, (iv)-B

B
(i)-A, B, (ii)-E, (iii)-C, D, (iv)-G

C
(i)-G, (ii)-F, (iii)-A, B, C, (iv)-E

D
(i)-F, (ii)-E, (iii)-A, B, D, (iv)-C

Solution

In the given figure:
A. Seminal vesicle
B. Vas deferens
C. Prostate gland
D. Bulbourethral gland
E. Urethra
F. Epididymis
G. Seminiferous tubules
Question 15
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The given diagram refers toT.S. of testis showing sectional view of a few seminiferous tubules. Identify the parts labelled A-D and select the correct option.

A
A-Sertoli cells, B-Spermatozoa, C-Interstitial cells, D-Sperms

B
A-Sertoli cells, B-Secondary spermatocyte, C-Interstitial cells, D-Sperms

C
A-Interstitial cells, B-Spermatogonia, C-Sefton cells, D-Sperms

D
A-Sertoli cells, B-Spermatogonia, C-Interstitial cell, D-Sperms

Solution

The testis consists of seminiferous tubules that consist of Sertoli cells that provide nutrition to the germ cells and these cells are lined on the inside along with Spermatogonia or the male germ cells. The regions towards the outside (interstitial spaces) contain interstitial cells. The matured spermatogonia are the spermatozoa or sperms that are present in the interior of the seminiferous tubule.

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Human Reproduction Test - 6

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Human Reproduction Test - 6

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SHARING IS CARING

Question 1

LH

FSH

GH

prolactin

Solution

Question 2

testes to epididymis

epididymis to vas deferens

ovary to uterus

vagina to uterus

Solution

Question 3

a

b

c

d

Solution

Question 4

Cowper 's gland

prostate gland

seminal vesicle

preputial gland

Solution

Question 5

Leydig 's cells

atretic follicular cells

Sertoli cells

chromaffin cells

Solution

Question 6

Fructose and certain enzymes but poor in calcium

Fructose and calcium but has no enzyme

Glucose and certain enzymes but has no calcium

Fructose, calcium and certain enzymes

Solution

Question 7

more space to visceral organs

spermatogenesis

sex differentiation

independent functioning of kidney

Solution

Question 8

(i) and (ii)

(ii) and (iii)

(ii) and (iv)

(i) and (iv)

Solution

Question 9

Inhibit sperm activity

Attract sperms

Stimulate sperm avidity

None of these

Solution

Question 10

Pectoral region

Abdominal region

Pelvis region

Lumbar region

Solution

Question 11

Acting as nurse cell to the sperms.

Secreting testicular fluid for transporting sperms to the lumen of the seminiferous tubule.

Secreting the hormone inhibin.

Forming a manchette.

Solution

Question 12

gubernaculum

seminal vesicles

epididymis

bulbourethral glands

Solution