Tag: regulation of urine formation

Questions Related to regulation of urine formation

Osmoregulation is carried out by

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. Ureter

  2. Nephron

  3. ACTH

  4. ADH

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Correct Option: D
Explanation:

The maintenance of constant osmotic pressure in the fluids of an organism by the control of water and salt concentrations. is called Osmoregulation. It  is carried out by 'anti-diuretic hormone'. 

Vasopressin is responsible for :-

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. Making urine dilute

  2. Dialating the blood vessel

  3. Decreasing filtrate concentration in PCT

  4. Increasing blood pressure

Show answer
Correct Option: D
Explanation:

Vassopressin or anti-diuretic hormone helps prevent loss of water from the body by increasing the reabsorption of water from the kidney and making urine more concentrated. It is also responsible for increasing the blood pressure by constricting the blood vessels. So, the correct option is 'increasing blood pressure'.

Acidification of urine occurs in

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. Proximal tubule

  2. Distal tubule

  3. Loop of henle

  4. None

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Correct Option: A

Choose the odd one out from given option.

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. Renin

  2. ANF

  3. ADH

  4. Aldosterone

Show answer
Correct Option: A
Explanation:

A. Renin is an aspartic protease protein as well as an enzyme which is secreted by the kidneys in the Renin-angiotensin-aldosterone system that regulates the arterial blood pressure.

B. ANF is called the Atrial natriuretic factor, it is a polypeptide hormone (28 amino-acid) is secreted by the atria of the heart in response and acts on the kidney to increase sodium excretion and to inhibit renin secretion.
C. ADH is called Anti-diuretic hormone or vasopressin which produced by the hypothalamus and it regulates and balances the amount of water in the blood.
D. Aldosterone is a mineralocorticoid steroid hormone produced by the adrenal gland which helps in the conservation of sodium in the kidney, salivary glands, sweat glands and colon.
Except for Renin, all others are hormones.
  • So, the correct answer is 'Renin'.

Decreased level of ADH results in the production of _______ 

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. isotonic urine

  2. Hypertonic urine

  3. hyptonic urine

  4. none of these

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Correct Option: A

The opening of urinary bladder is called?

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. Uriniferous tubule

  2. Nephron

  3. Urethra

  4. Ureter

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Correct Option: A

Pituitary controls urine volume through

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. ADH

  2. STH

  3. ACTH

  4. GH

Show answer
Correct Option: A
Explanation:

ADH is anti diuretic hormone. It is secreted from posterior pituitary. It stimulates water absorption and hence reduces urine volume.

Glomerular filtration rate would be decreased by:

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. an increase in renal blood flow

  2. Compression of the renal capsule

  3. An increase in afferent arteriolar pressure

  4. Constriction of the efferent arteriole

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Correct Option: A

Drinking of which would lead to the highest rate of ADH secretion?

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. Distilled water

  2. Sea water

  3. Isotonic water

  4. Alcohol

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Correct Option: A

In the vertebrates, the hormones which control osmoregulation are?

zoology excretion and osmoregulation regulation of urine formation properties of urine and regulation of urine formation coordination in human beings- chemical control

  1. Vasopressin and thyrotropin

  2. Aldosterone and corticotropin

  3. Thyrotropin and corticotropin

  4. Vasopressin and aldosterone

Show answer
Correct Option: D
Explanation:

Kidneys play a very large role in human osmoregulation by regulating the amount of water reabsorbed from glomerular filtrate in kidney tubules, which is controlled by hormones such as antidiuretic hormone(ADH), aldosterone and corticotropin. 

So, the correct answer is 'Aldosterone and corticotropin'