EVERYDAY SCIENCE

SCIENCE

ENDOCRINE GLANDS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which one of the following hormones secreted by the thyroid increases the rate at which cells release energy?

A	Thyroxin
B	Calcitonin
C	Adrenaline
D	Insulin

Explanation:

Detailed explanation-1: -Thyroxine (T4) is produced by the thyroid gland under regulation from the hypothalamus and pituitary gland. The feedback loop signals to the hypothalamus in to release thyrotropin-releasing hormone, which then stimulates the pituitary gland to release the thyroid stimulating hormone.

Detailed explanation-2: -Your hypothalamus releases thyrotropin-releasing hormone (TRH), which triggers your pituitary gland to release thyroid-stimulating hormone (TSH), which stimulates your thyroid to release T3 and T4.

Detailed explanation-3: -The thyroid gland is an endocrine gland in your neck. It makes two hormones that are secreted into the blood: thyroxine (T4) and triiodothyronine (T3). These hormones are necessary for all the cells in your body to work normally.

Detailed explanation-4: -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-5: -The pituitary gland and hypothalamus both control the thyroid. When thyroid hormone levels drop too low, the hypothalamus secretes TSH Releasing Hormone (TRH), which alerts the pituitary to produce thyroid stimulating hormone (TSH).

There is 1 question to complete.