The 24 hour (diurnal) rhythm of our body such as the sleep -wake cycle is regulated by the hormone

• Calcitonin

• prolactin

• adrenaline

• adrenaline

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

• Aldosterone

• Both androstenedione and dehydroepiandrosterone 

• Adrenalin

• Adrenalin

Which one of the following pairs is incorrectly matched?

• Glucagon - Beta cells (source)

• Somatostatin - Delta cells (source)

• Corpus luteum - Relaxin (secretion)

• Corpus luteum - Relaxin (secretion)

The nerve centres which control the body temperature and the urge for eating are contained in 

• hypothalamus

• pons

• cerebellum

• cerebellum

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

• toxic goitre

• cretinism 

• simple goitre

• simple goitre

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

• Hormone	Source	Function
  Vasopressin	Posterior Pituitary	Increases loss of water through urine

• Hormone	Source	Function
  Norepinephrine	Adrenal medulla	Increases heartbeat, rate of respiration and alertness

• Hormone	Source	Function
  Glucagon	Beta-cells of Islets of Langerhans	Stimulates glycogenolysis

• Hormone	Source	Function
  Glucagon	Beta-cells of Islets of Langerhans	Stimulates glycogenolysis

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

• Thyroxin

• Adrenaline

• Glucagon

• Glucagon

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

• Parathyroid

• Parotid

• Pancreas

• Pancreas

139.

Compared to a bull a bullock is docile because of

• higher levels of thyroxin

• higher levels of cortisone

• lower levels of blood testosterone

• lower levels of blood testosterone

A steroid hormone which regulates glucose metabolism is

• cortisol

• corticosterone

• 11-deoxycorticosterone

• 11-deoxycorticosterone