Identify the hormone with its correct matching of source and function.

• Oxytocin - posterior pituitary, growth and maintenance of mammary glands.

• Melatonin - pineal gland, regulates the normal rhythm of sleep-wake cycle

• Progesterone - corpus luteum, stimulation of growth and activities of female secondary sex organs

• Atrial natriuretic factor - ventricular wall increases the blood pressure

B.

Melatonin - pineal gland, regulates the normal rhythm of sleep-wake cycle

Melatonin is a hormone present in animals, plants and microbes. In animals melatonin allowing the regulation of the circadian rhythms. Oxytocin is a neurohypophysial hormone which stimulates the muscle contraction (smooth muscle) in the wall uterus during childbirth. Progesterone is a female hormone produced by the ovaries during the release of a mature egg from an overly during ovulation.
ANF stimulates the secretion of Na and H₂O by the kidneys and helps in regulating blood pressure.