The deficiency of thyroxine causes a disease called goiter, which is characterized by the enlargement of the thyroid gland in the neck.
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Haloalkanes have halogen atoms attached to the sp³ hybridized carbon atom of an alkyl group, while haloarenes have halogen atoms attached to sp² hybridized carbon atom(s) of an aryl group.
Chloramphenicol is a chlorine-containing antibiotic produced by microorganisms and is effective for the treatment of typhoid fever.
The endocrine system, which includes animal hormones like adrenaline, provides a second way of control and coordination in the body. Adrenaline influences various physiological responses, including heart rate, blood circulation, and breathing rate, to prepare the body for specific situations.
Adrenaline, secreted into the blood, accelerates the heart rate, increasing oxygen supply to muscles. It also causes the contraction of muscles around small arteries in the digestive system and skin, redirecting blood flow to skeletal muscles.