Zoology - Chemical Coordination and Integration Question with Solution | TestHub

Hypothyroidism is a deficiency of thyroid hormones (${\mathrm{T}}_3$and${\mathrm{T}}_4$). As thyroid glands fail to produce thyroid hormones there is a feedback to the pituitary due to which TSH increases. Thyroid hormones are responsible for metabolism hence in case of deficiency the metabolism of the body slows down and thus weight of the person increases. This also causes water accumulation. Since there is no metabolism, a person has no energy to perform work and this causes lethargy. If this deficiency occurs in children this will result in retarded mental health.Urea is a nitrogenous waste and its accumulation is related to kidney function.