Zoology - Chemical Coordination and Integration Question with Solution | TestHub

Hypothyroidism means hyposecretion of thyroid hormones (${\mathrm{T}}_3$and${\mathrm{T}}_4$). Thus levels of TSH increases. Since thyroid hormones are less metabolism does not take place and as a result patient experiences weight gain. This also causes bradycardia i.e. decreases heartbeat. Heat intolerance is the symptom of hyperthyroidism.