What is the effect of GnRH produced by hypothalamus?
Stimulates the synthesis and secretion of androgens
Stimulates secretion of milk in mammary glands
Stimulates foetal ejection reflex
Stimulates synthesis of carbohydrates from non- carbohydrates in liver
A.
Stimulates the synthesis and secretion of androgens
Gonadotropin Releasing Hormone (GnRH) is a releasing hormone. It stimulates the anterior lobe of the pituitary gland to secrete two gonadotropic hormones- FSH (Follicle Stimulating Hormone) and LH (Luteinising Hormone).
In males, LH stimulates testosterone production from the interstitial cells of the testes (leydig cells). FSH stimulates testicular growth and enhances the production of an androgen- binding protein by the Sertoli cells, which are a component of the testicular tubule necessary for sustaining the maturing sperm cells.
In females, FSH stimulates the growth of ovarian follicles in the ovary before the release of an egg from one follicle at ovulation. It also increases oestradiol production. LH triggers ovulation and development of the corpus luteum.
Assertion : Adrenaline is called an emergency hormone.
Reason : It acts on the cells of skeletal, cardiac, smooth muscles, blood vessels and fat cells
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Assertion : Insulin is antagonistic to glucagon.
Reason : It is an anabolic hormone.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : Pantothenic acid deficiency is probably the most common vitamin deficiency.
Reason : Macrocytic anaemia is a characteristic feature of pantothenic acid deficiency.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Assertion : Hormone calcitonin has antagonistic effect to that of parathormone.
Reason : Calcitonin decreases blood calcium level while parathormone increases blood calcium level.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
A patient of diabetes mellitus excretes glucose in urine even when he is kept in a carbohydrate free diet. It is because
fats are catabolised in adipose tissues to form glucose
amino acids are catabolised in kidney to form glucose
amino acids are discharged in blood stream from liver
glycogen from muscles is released in blood stream.
Which of the following match is correct?
Hormone | Effect |
Oxytocin | Milk ejection hormone |
Glucagon | Decreases blood sugar level |
Adrenaline | Decreases heart rate |
Thyroxine | Decreases BMR |
Which of the following statements regarding glucagon is false?
It is secreted by -cells of Langerhans
It acts antagonistically to insulin
It decreases blood sugar level
The gland responsible for its secretion is heterocrine gland.
Assertion: Pituitary is attached to hypothalamus by a vein.
Reason: This attachment hypophysial portal vein.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion: Rabies is acute infectious disease of warm blooded mammals characterised by
involvement of central nervous system resulting in paralysis and finally death.
Reason: This is caused due to neurotropic filterable bacteria in saliva of rabid animals.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.