Question

Mention one function for each of these hormones.
i) Thyroxine
ii) Insulin
iii) Adrenaline
iv) Growth hormone
v) Testosterone.​

Answer 1

Answer:

I) Thyroxine is a hormone the thyroid gland secretes into the bloodstream. Once in the bloodstream, thyroxine travels to the organs, like the liver and kidneys, where it is converted to its active form of triiodothyronine.

ii) Insulin is a peptide hormone produced by beta cells of the pancreatic islets; it is considered to be the main anabolic hormone of the body. It regulates the metabolism of carbohydrates, fats and protein by promoting the absorption of glucose from the blood into liver, fat and skeletal muscle cells.

iii) Adrenaline, also known as epinephrine, is a hormone and medication which is involved in regulating visceral functions. Adrenaline is normally produced both by the adrenal glands and by a small number of neurons in the medulla oblongata.

iv) Growth hormone (GH) or somatotropin, also known as human growth hormones (hGH or HGH) in its human form, is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans and other animals. It is thus important in human development.

v) Testosterone is the primary sex hormone and anabolic steroid in males. In male humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

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Answer 2

(a) Thyroxin controls metamorphosis in insects.

(b) Insulin—regulates blood sugar.

(c) Adrenalin—increases heart rate and supply of blood to various organs.

(d) Growth hormone—regulates growth and development.

(e) Testosterone—controls the secondary sexual charaters in male.