Question

What does not occur in exophthalmic goitre?
A. protrusion of eyes
B. Increased heart beat
C. Nervousness
D. Degeneration of sex organs

Answer 1

Hint: iodine is essential for normal rate of hormone synthesis in the thyroid. Deficiency of iodine in diet results in low secretion of thyroid hormone (hypothyroidism) and enlargement of thyroid gland (simple goitre). Goitre is a disease characterised by enlargement of thyroid gland, mainly caused by deficiency of iodine in the diet.

Complete answer:

Exophthalmic Goitre: In Grave's disease or Exophthalmic goitre, a thyroid enlargement (goitre) is accompanied by a bulging of eyeballs (exophthalmos). The enlarged thyroid is overactive and secretes excessive amounts of thyroid hormones. So, the goitre is associated with symptoms of thyroid over activity such as high metabolic rate, rapid heart rate, rise in body temperature, emaciation, nervousness, irritability, tremor and restlessness. It also occurs more often in females
Now let us match these symptoms with the given symptoms.
protrusion of eyes :- it occurs in exophthalmic goitre due to deposition of fat around eyes due to over secretion of thyroxine . So this is not the correct option.
Increased heart beat :- due to over activity of thyroxine hormone the heart beat increases thus it occurs in exophthalmic goitre. So, this option is also not correct.
Nervousness :- due to increased heart beat and high metabolic rate , nervousness occurs in a person in exophthalmic goitre . Thus this option is also not correct.
Degeneration of sex organs:- over secretion of thyroxine hormone do not cause degeneration of sex organs so it do not occurs in exophthalmic goitre. Thus this option is correct.

Our required ans is d that is Degeneration of sex organs.

Note: Exophthalmic goitre is an autoimmune disorder in which the person produces antibodies that mimic the action of TSH, but are not regulated by normal negative feedback control.
Osteoporosis may occur due to excessive loss of calcium & phosphorus ions from bones.