Tag: excretory system in human

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Questions Related to excretory system in human

Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

Which of the following are excretory products in animals?

  1. Urea

  2. Uric acid

  3. Ammonia

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In animals, the main excretory products are, Ammonia- protozoans, crustaceans, platyhelminths, cnidarians, poriferans, echinoderms, fishes, larvae/tadpoles of amphibians are ammonotelic. Urea -cartilaginous fish, few bony fishes, adult amphibians and mammals including humans are uricotelic, Uric acid-terrestrial arthropods (including insects), lizards, snakes, and birds are uricotelic.

So, the correct answer is 'All the above'

Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

The process of filtering the blood by artificial kidney is known as

  1. Dialysis

  2. Excretion

  3. Secretion

  4. Assimilation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The process of filtering the blood by the artificial kidney is known as dialysis. It is a method of removing excess water, nitrogenous wastes (urea), toxins from the blood in the patient who is rapidly developing loss of kidney function. It is also called renal replacement therapy.
So, the correct answer is 'Dialysis'.
Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

The urinary opening is known as

  1. Urinary bladder

  2. Ureter

  3. Urethera

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The urinary opening is known as Urethra. It is a long tube which connects urinary bladder to the urinary meatus for removal of urine from the body. In males, urethra travels through the penis and meet the urethral meatus located at the tip of the penis. In females, urethra connects to the urethral meatus above the vagina.
So, the correct answer is 'Urethra'.
Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

The major excretory product in humans is 

  1. Urea

  2. Ammonia

  3. Uric acid

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The major excretory product in humans is urea. The first step in the conversion of amino acids from protein into metabolic waste in the liver is the removal of the alpha-amino nitrogen, which results in ammonia. Because ammonia is toxic, it is converted into urea by humans. The urea is excreted in urine by the kidneys.
So, the correct answer is 'Urea'.
Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

The excretory product in fishes are 

  1. Ammonia

  2. Uric acid

  3. Urea

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The excretory product in fishes is ammonia. Usually, food for fish is rich in proteins. And the end product of protein catabolism is ammonia. So fishes excrete ammonia. As the fishes excrete ammonia as excretory waste they are called ammonotelic.
So, the correct answer is 'Ammonia'.
Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

Which of the following is not an accessory excretory organ of vertebrates?

  1. Skin

  2. Lungs

  3. Liver

  4. Heart
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The heart is a pumping organ. It helps in circulation of deoxygenated blood all through the body. These helps in the oxygenation of blood. It is mainly located in the thoracic region. The waste materials present in the blood is filtered by the kidney.

So, the correct answer is option D.

Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

Which of the following statements is wrong about the human excretory system?

  1. Excretory system consists of one pair of bean shaped kidneys, one pair of ureter, a urinary bladder and a urethra

  2. Kidneys are situated between the 12th thoracic and 3rd lumber vertebrae close to the dorsal wall in abdominal cavity

  3. Right kidney is a little higher level than the left one

  4. All
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

The urethra is surrounded by sphincter muscles.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

True,


Opening of urinary bladder in controlled by sphincters made of circular muscles. These got relax during urine release.

$\bullet$ Two sphincters are present human (inner involuntary,outer voluntary )

$\bullet$ Prostatic urethra is absent in female,  $\therefore$ both sphincters are present in membranous urethra.