A: Diabetes insipidus is marked by excessive urination and too much thirst for water.
R: Antidiuretic hormone (ADH) is released by the posterior lobe of pituitary gland.
A: Insulin is not given orally.
R: Insulin hormone is lipid soluble and directly enters inside the cell membrane.
A: Chorionic gonadotropin prevents the corpus luteum from involuting.
R: It has properties similar to luteinizing hormones.
A: Thyroxine shows calorigenic effect.
R: Thyroxine increases catabolism, produces energy and increases body temperature.
A: Inhibin is secreted by the corpus luteum.
R: They inhibit the FSH and GnRH production.
A: Our body secretes adrenaline in intense cold.
R: Adrenaline raises metabolic rate.
A: Occasionally mammary glands are functional in males and the condition is called gynaecomastia.
R: Decreased testosterone in later life may also lead to gynaecomastia. It is usually due to perturbation of estrogen to androgen ratio.
In later life the fat deposition increases which results in increased secretion of oestrogen. Due to this hormone perturbation, gynaecomastia.
A: Prolactin is unique among the pituitary hormones as it is under predominant inhibitory control of hypothalamus.
R: The controlling agent is neurotransmitter dopamine produced by tuberoinfundibular neurons.
A: Ethanol is a diuretic agent.
R: It inhibits vasopressin secretion.
A: Oxytocin stimulates contraction of uterine muscles during birth and initiates ejection of milk.
R: It is synthesized in the posterior lobe of pituitary.
It is released through the axon of neurosecretory cells of hypothalamus into the posterior pituitary.