Which of the following is/are involved in the negative feedback of Tri iodothyroxin (T3), and Thyroxin (T4)?
a) anterior pituitary
b) posterior pituitary
c) hypothalamus
d) both a and c
Explanation TRF from hypothalamus and TSH from anterior pituitary is negatively controlled by thyroxin
Which of the following is/are the physiological effect/s of Tri iodothyroxin (T3), and Thyroxin (T4)?
a) enhance glucose catabolism
c) promote development of nervous system in fetus and infants
b) enhance the synthesis of cholesterol in the liver
d) all of these
Explanation these hormones promote basal metabolic rate of the body
The rate of metabolism is regulated by…
a) PTH
b) MSH
c) FSH
d) thyroxin
First crystalline hormone is……..
a) epinephrine
b) nor-epinephrine
c) thyroxin
d) Testosterone
Explanation Epinephrine was the first hormone to be isolated in crystalline form in 1931.
Which of the following play role in biorhythm?
a) MSH
b) LH
c) ADH
d) melatonin
Explanation: melatonin is released from pineal gland
Which of the following is/are needed for the secretion of thyroxin hormone?
a) iodine
b) tyrosine
c) both a and b
d) none of these
