Biology Questions and Answers
- Why is the dietary
obtainment of iodine so
important for thyroid
functioning?
The obtainmis important for the thyroid ent of iodine from the dietbecause this (^)
chemical element is nesynthesis of the thyroid hormones T3cessary for the
and T4. The iodine supply often comes
from the diet.
- What is a goiter? What is
endemic goiter? How is this
problem socially solved?
Goiter is the abnormal enlargement of
the thyroia tumor in d gland. The goiter appears asthe anterior neck and it may
be visible or sometimes not visible but
palpable. Goiter can hypothyroidism or in hyperthyroidism.occur in
Endemic goitdeficient iodine ingestion (der is the goiter causeeficiency ofd by (^)
iodine in the diet). The endemiccharacter of the disease is explained (^)
because the iodine content of the diet is
often a socialaffecting many p or cultural coeople of somendition
geographical regions. The
hypothyriodine ingestion is moroidism caused e frequent inby deficient (^)
regions far from the sea coast (since
sea food is rich in iodine).
Nowadays the problem is often solved
by obligatory adsalt. As table saltdition o is a widely usedf iodine in table
condiment the supply of iodine in diet is
almost assured by this method.
- What happens to the TSH
(thyroid-stimulating hormone)
blood level in hypothyroidism?
Why is there enlargement of
the thyroid in the endemic
goiter disease?
When there is low T3 and T4 secretion
by the thyroihypophysis is very stimulated d the TSH secretion band they the
TSH blood level increases. The increase
in the TSH availabilityenlargement of the thyroid promotes thgland. e
The thyroid a tissue that tries to compenlargement is a rensate theaction oe f
functional dgland increase eficiency by making tits size. he - What are some signs and
symptoms found in patients
with hyperthyroidism?
The hormones made by the thyroidgland stimulate the basal metabolism o (^) f
the body. In hyperthyroidism there is
abnormally hisecretion of T3 and T4 so the basalgh production and (^)
metabolic rate is increased. The signs of
this con(abnormally hdition may bigh heart rate), we tachycardiaeight (^)
loss, excexcessiveessive heat sensation, sweating, anxiety, etc. O (^) ne of
the typical signs of hyperthyroidism is
exophthalmos (peyeballs). Generally throtrusion oe patient alsof the (^)
presents goiter.
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