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Chemical Coordination and Integration

AIPMT 2008MCQEasy📈 Topic in 12% papers+4−1
Ques. 1AIPMT 2008

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

Answer

(1) causes strong uterine contractions during parturition

Solution

As per NCERT, oxytocin is synthesised by the hypothalamus and released by the posterior pituitary (neurohypophysis).

⇒ Oxytocin acts on the smooth muscles of the body; in women it stimulates a vigorous contraction of the uterus at the time of child birth, and milk ejection from the mammary gland.

∵ Growth of mammary glands is stimulated by prolactin and ovarian hormones, and vasopressin is not released in response to oxytocin.

Answer: (1)

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Ques. 2AIPMT 2007

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
Ques. 3AIPMT 2007

A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly?

  1. Parotid
  2. Pancreas
  3. Thyroid
  4. Parathyroid
Ques. 4AIPMT 2007

Compared to a bull a bullock is docile because of:

  1. Lower levels of adrenalin/noradrenalin in its blood
  2. Lower levels of blood testosterone
  3. Higher levels of thyroxin
  4. Higher levels of cortisone
Out of syllabus
Ques. 5AIPMT 2006

Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?

  1. Glucagon
  2. ACTH
  3. Insulin
  4. Adrenaline
Ques. 6AIPMT 2006

Which of the following is an accumulation and release center of neurohormones?

  1. Anterior pituitary lobe
  2. Posterior pituitary lobe
  3. Intermediate lobe of the pituitary
  4. Hypothalamus
Ques. 7AIPMT 2006

A steroid hormone which regulates glucose metabolism is

  1. cortisone
  2. cortisol
  3. corticosterone
  4. 11-deoxycorticosterone.
Ques. 8AIPMT 2006

Which one of the following is not a secondary messenger in hormone action?

  1. cAMP
  2. cGMP
  3. Calcium
  4. Sodium
Ques. 9AIPMT 2006

Which one of the following statements is correct?

  1. Endocrine glands regulate neural activity, but not vice versa.
  2. Neurons regulate endocrine activity, but not vice versa.
  3. Endocrine glands regulate neural activity, and nervous system regulates endocrine glands.
  4. Neither hormones control neural activity nor the neurons control endocrine activity.
Ques. 10AIPMT 2004

Which one of the following hormones is modified amino acid?

  1. Epinephrine
  2. Progesterone
  3. Prostaglandin
  4. Estrogen
Ques. 11AIPMT 2004

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

  1. Luteinizing hormone – Failure of ovulation
  2. Insulin – Diabetes insipidus
  3. Thyroxine – Tetany
  4. Parathyroid – Diabetes mellitus

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