Tag: excretory system of human

Questions Related to excretory system of human

Enema is the given to the patient before the kidney transplant to prevent the

  1. Cardiac blockage.

  2. Bowel blockage.

  3. Urethral blockage.

  4. All of the above.


Correct Option: B

In which of the following area is the incision made to transplant a kidney?

  1. Lower abdomen

  2. Upper abdomen

  3. Aortic vein

  4. None of the above


Correct Option: A

Isografts are not rejected during a kidney transplant because the donor is 

  1. Genetically identical.

  2. Genetically dissimilar.

  3. Belongs to same species.

  4. None of the above.


Correct Option: A
Explanation:

Isograft is a tissue or organ transplanted from a donor to a recipient who are identical or monozygotic twins. In an isograft transplantation the chances of rejection are near to nil with identical MHCs as they are genetically identical.

So, the correct answer is 'Genetically identical.'

Which of the following cell-surface proteins encoded by HLA is estimated before the transplant before rejection?

  1. Immunoglobulins

  2. MHC

  3. APC

  4. All of the above


Correct Option: B

The transplant of a kidney from a monkey into human is rejected vigorously since it acts as a

  1. Autograft.

  2. Xenograft.

  3. Isograft.

  4. All of the above.


Correct Option: B
Explanation:

Monkey and humans have evolved into two distinct lineages and are distinct species and therefore have a dissimilar genetic composition. Any transplant between these two organisms is known as a xenograft. Which may be rejected vigorously due to greater than required MHC incompatibility.

So, the correct answer is 'Xenograft'


Which of the following type of donor is rejected during kidney transplant?

  1. Autograft

  2. Isograft

  3. Allograft

  4. None of the above


Correct Option: C
Explanation:

Allograft is a tissue or organ transplanted from a donor to recipient of the same species but is genetically different and therefore may face rejection during kidney transplant due to distinct HLA proteins

So, the correct answer is 'Allograft'

The highest genetic variation is seen in which of the following type of the donor for a kidney transplant?

  1. Autograft

  2. Xenograft

  3. Allograft

  4. All of the above


Correct Option: B

First kidney transplantation in India was done on _______

  1. May 1965

  2. February 1965

  3. May 1994

  4. May 1978


Correct Option: A
Explanation:
The first human kidney transplant performed in India was done at the King Edward Memorial Hospital at Mumbai In may 1965.
So, the correct answer is 'May 1965'.

Which one is not an excretory organ?

  1. Skin

  2. Kidneys

  3. Intestine

  4. Liver


Correct Option: C
Explanation:

In humans, kidneys are the chief excretory organ, other than kidneys, lungs, liver, and skin also help in the elimination of excretory wastes. Lungs remove a large amount of carbon dioxide and the significant amount of water every day. The liver secretes bile containing substances like bilirubin, biliverdin, degraded steroid hormones, vitamins. Most of these substances pass along with digestive wastes. Skin contains sweat glands through which NaCl, the small amount of urea, lactic acid etc are secreted. The intestine is not an excretory organ but it is a digestive organ.

So, the correct answer is 'Intestine'.

Which of the following passage way is part of cloaca of vertebrates?

  1. Rectum

  2. The reproductive tract

  3. The urinary tract

  4. All of the above


Correct Option: D
Explanation:

Cloaca is the posterior opening that serves as the only opening for the intestinal, reproductive and urinary tracts of all amphibians, birds, reptiles, and monotremes. They possess this orifice, from which they excrete both urine and feces, unlike most placental mammals, which possess two or three separate orifices for evacuation.