Tag: excretory system of human

Quizzes (9) Questions (91)

Questions Related to excretory system of human

Multiple choice biology excretory system of human artificial kidney kidney transplant disorders of kidney

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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a standard kidney transplant, the donor kidney is placed in the iliac fossa, which is located in the lower abdomen, rather than in the original anatomical position of the kidneys.

Multiple choice biology excretory system of human artificial kidney kidney transplant disorders of kidney

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.
Reveal answer Fill a bubble to check yourself
A Correct answer
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.'

Multiple choice biology excretory system of human artificial kidney kidney transplant disorders of kidney

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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Major Histocompatibility Complex (MHC) molecules are the cell-surface proteins encoded by HLA genes that are primarily responsible for the immune system recognizing the donor organ as foreign.

Multiple choice biology excretory system of human artificial kidney kidney transplant disorders of kidney

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.
Reveal answer Fill a bubble to check yourself
B Correct answer
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'


Multiple choice biology excretory system of human artificial kidney kidney transplant disorders of kidney

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

  1. Autograft

  2. Isograft

  3. Allograft

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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'

Multiple choice biology excretory system of human artificial kidney kidney transplant disorders of kidney

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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A xenograft involves transplanting tissue between different species, which results in the highest level of genetic variation and the most severe immune rejection response compared to autografts or allografts.

Multiple choice zoology excretory system of human other excretory organ role of other organs in excretion accessory excretory organs

Which one is not an excretory organ?

  1. Skin

  2. Kidneys

  3. Intestine

  4. Liver
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

Multiple choice zoology excretory system of human other excretory organ role of other organs in excretion accessory excretory organs

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
Reveal answer Fill a bubble to check yourself
D Correct answer
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.