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•Parathyroid hormone regulates calcium and potassium levels in the blood, which is necessary for nervous and muscular systems to function properly. When the calcium in the blood goes too low, the parathyroid glands make more PTH. PTH raises the blood calcium level by desorption of the bones.

•It increases the calcium absorption from the digested food. (b) Thyroid hormones : Thyroxine/ Tetraiodothyonine (T4) and triiodothyronine (T3) are collectively known as thyroid hoemones. They are secreted by the follicular cells of the thyroid gland and are peptide hormones.

•Regulate the blood calcium levels. Thymosins are released by the thymus gland. They are peptide hormones.

•. Regulate the development, maturation and functions of the male accessor sex organs in males. ii. Stimulate development of secondary sexual characters in males.

•Estrogen regulates the growth, development, and physiology of the human reproductive system. This hormone also influences neuroendocrine, skeletal, adipose, and cardiovascular systems. Estrogen is an important sex hormone produced primarily by the ovaries in females and testes in males.

•(f) Insulin is secreted by the β cells of the pancreas. It lowers blood glucose level and promotes synthesis of proteins and fats: Glucagon is secreted by the alpha- cells of the pancreas. It increases the level of glucose in the blood.

Explanation:

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Parathyroid hormone regulates calcium and potassium levels in the blood, which is necessary for nervous and muscular systems to function properly. When the calcium in the blood goes too low, the parathyroid glands make more PTH. PTH raises the blood calcium level by desorption of the bones.

Thyroid hormone is the hormone that controls your body's metabolism, the process in which your body transforms the food you eat into energy. The two main hormones your thyroid releases — thyroxine (T4) and triiodothyronine (T3) — collectively make up thyroid hormone.

Thymosin stimulates the development of T cells. Throughout your childhood years, white blood cells called lymphocytes pass through the thymus, where they are transformed into T cells.

Androgens are a group of hormones. They help start puberty and play a role in reproductive health and body development. All genders make androgens, but males make more of them. Testosterone is the most common androgen.

In addition to regulating the menstrual cycle, estrogen affects the reproductive tract, the urinary tract, the heart and blood vessels, bones, breasts, skin, hair, mucous membranes, pelvic muscles, and the brain.

Glucagon is a hormone that your pancreas makes to help regulate your blood glucose (sugar) levels. Glucagon increases your blood sugar level and prevents it from dropping too low, whereas insulin, another hormone, decreases blood sugar levels.