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Chemical Coordination and Integration · Question 48

AIPMT 2011 (Prelims)MCQEasy📈 Topic in 12% papers+4−1
1

Match the source gland with its respective hormone and function and select the correct option.

  1. array|l|l|l| Source gland & Hormone & Function \ Anterior pituitary & Oxytocin & Contraction of uterus \ & & muscles during child \ & & birth \ array
  2. array|l|l|l| Source gland & Hormone & Function \ Posterior pituitary & Vasopressin & Stimulates reabsorption \ & & of water in the distal \ & & tubules in the nephron \ array
  3. array|l|l|l| Source gland & Hormone & Function \ Corpus luteum & Estrogen & Supports pregnancy \ array
  4. array|l|l|l| Source gland & Hormone & Function \ Thyroid & Thyroxine & Regulates blood \ & & calcium level \ array

Answer

(2) array|l|l|l| Source gland & Hormone & Function \ Posterior pituitary & Vasopressin & Stimulates reabsorption \ & & of water in the distal \ & & tubules in the nephron \ array

Solution

As per NCERT, the posterior pituitary stores and releases two hormones, oxytocin and vasopressin, which are synthesised by the hypothalamus.

⇒ Vasopressin (ADH) acts mainly on the kidney and stimulates reabsorption of water and electrolytes by the distal tubules. Option (2) is correct.

⇒ Oxytocin is released from the posterior (not anterior) pituitary. Option (1) is wrong.

⇒ The corpus luteum secretes mainly progesterone, which supports pregnancy. Option (3) is wrong.

⇒ Blood calcium is regulated by thyrocalcitonin (TCT) of the thyroid and by parathyroid hormone, not by thyroxine. Option (4) is wrong.

Answer: (2)

AIPMT 2011 (Prelims)

Keep practising — Chemical Coordination and Integration

2

Given below is an incomplete table on hormones, their source glands and one major effect of each on human body. Identify the option representing correct grouping of hormone, its gland and effect. array|l|l|l| Gland & Secretion & Effect on body \ A & Estrogen & Maintenance of \ & & secondary sexual \ & & characters \ Alpha cells of Islets & B & Raises blood sugar \ of Langerhans & & level \ Anterior pituitary & C & Over secretion leads \ & & to gigantism \ array

  1. array|l|l|l| A & B & C \ Ovary & Glucagon & Growth hormone \ array
  2. array|l|l|l| A & B & C \ Placenta & Insulin & Vasopressin \ array
  3. array|l|l|l| A & B & C \ Ovary & Insulin & Calcitonin \ array
  4. array|l|l|l| A & B & C \ Placenta & Glucagon & Calcitonin \ array
AIPMT 2011 (Prelims)
3

Injury to adrenal cortex is not likely to affect the secretion of which one of the following?

  1. Aldosterone
  2. Both androstenedione and dehydroepiandrosterone
  3. Adrenaline
  4. Cortisol
AIPMT 2010 (Prelims)
4

Which one of the following pairs is incorrectly matched?

  1. Glucagon – Beta cells (source)
  2. Somatostatin – Delta cells (source)
  3. Corpus luteum – Relaxin (secretion)
  4. Insulin – Diabetes mellitus (disease)
AIPMT 2010 (Prelims)
5

Toxic agents present in food which interfere with thyroxine synthesis lead to the development of

  1. toxic goitre
  2. cretinism
  3. simple goitre
  4. thyrotoxicosis
AIPMT 2010 (Prelims)
6

Select the correct matching of a hormone, its source and function.

  1. array|l|l|l| Hormone & Source & Function \ Vasopressin & Posterior pituitary & Increases loss of \ & & water through urine \ array
  2. array|l|l|l| Hormone & Source & Function \ Norepinephrine & Adrenal medulla & Increases heart beat, \ & & rate of respiration and \ & & alertness \ array
  3. array|l|l|l| Hormone & Source & Function \ Glucagon & Beta-cells of Islets of & Stimulates glycogenolysis \ & Langerhans & \ array
  4. array|l|l|l| Hormone & Source & Function \ Prolactin & Posterior pituitary & Regulates growth \ & & of mammary glands \ & & and milk formation in \ & & females \ array
AIPMT 2010 (Prelims)
7

A health disorder that results from the deficiency of thyroxine in adults and characterised by (i) a low metabolic rate, (ii) increase in body weight and (iii) tendency to retain water in tissues is

  1. simple goitre
  2. myxoedema
  3. cretinism
  4. hypothyroidism.
AIPMT 2009
8

Which one of the following pairs of organs includes only the endocrine glands?

  1. Thymus and testes
  2. Adrenal and ovary
  3. Parathyroid and adrenal
  4. Pancreas and parathyroid
AIPMT 2008
9

The blood calcium level is lowered by the deficiency of

  1. both calcitonin and parathormone
  2. calcitonin
  3. parathormone
  4. thyroxine
AIPMT 2008
10

In human adult females oxytocin:

  1. causes strong uterine contractions during parturition
  2. stimulates pituitary to secrete vasopressin
  3. stimulates growth of mammary glands
  4. is secreted by anterior pituitary
AIPMT 2008
11

Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoreyed building starts climbing down the stairs rapidly. Which hormone initiated this action?

  1. Adrenaline
  2. Glucagon
  3. Gastrin
  4. Thyroxine
AIPMT 2007

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