BIOMOLECULES AND ENZYMES

BIOLOGY

HORMONES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the function of the hormone thyroxine?
A
Controls metabolic rate and brings about balanced growth
B
controls glucose level of the blood
C
prepares body for emergency
D
controls growth and development of male reproductive system
Explanation: 

Detailed explanation-1: -Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and maintenance of bones.

Detailed explanation-2: -Thyroxine is produced from the thyroid gland, which stimulates the metabolic rate. It controls the speed at which oxygen and food products react to release energy for the body to use. Thyroxine also plays an important role in growth and development. Its levels are controlled by negative feedback .

Detailed explanation-3: -Thyroxine plays a crucial role in heart and digestive function, metabolism, brain development, bone health, and muscle control. It affects almost all of the body’s systems, which means proper thyroxine levels are vital for health.

Detailed explanation-4: -The thyroid gland produces three hormones: Thyroxine (T4), Triiodothyronine (T3) and Calcitonin. T4 and T3 are what most people think of as “thyroid hormones.” These hormones play a significant role in your metabolism and in energy regulation in the body.

Detailed explanation-5: -Local activation of thyroxine (T4), to the active form, triiodothyronine (T3), by 5′-deiodinase type 2 (D2) is a key mechanism of TH regulation of metabolism. D2 is expressed in the hypothalamus, white fat, brown adipose tissue (BAT), and skeletal muscle and is required for adaptive thermogenesis.

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