Which hormone is responsible for stimulation of vigorous contraction in uterus at the time of child birth and milk ejection from the mammary gland?
Which hormone is responsible for stimulation of vigorous contraction in uterus at the time of child birth and milk ejection from the mammary gland?
The correct option is C Oxytocin
In women, oxytocin is responsible for signaling contractions of the womb during labor. The hormone stimulates the uterine muscles to contract, so labor begins. It also increases the production of prostaglandins, which move labor along and increases the contractions even more. Because of this effect, synthetic oxytocin (pitocin) is sometimes used to induce a woman to start labor if she cannot start naturally, or it can be given to make contractions stronger if a woman's labor is slowing.
Once the baby is born, oxytocin promotes lactation by moving the milk into the breast. When the baby sucks at the mother's breast, oxytocin secretion causes the milk to release so the baby can feed.
Vasopressin acts mainly at the kidney and stimulates resorption of water and electrolytes by the distal tubules and thereby reduces loss of water through urine.
Estrogens regulate development of female sexual organs and sexual behaviour. Progesterone supports pregnancy, acts on the mammary glands and stimulates the formation of alveoli (sac-like structures which store milk) and milk secretion.
In women, oxytocin is responsible for signaling contractions of the womb during labor. The hormone stimulates the uterine muscles to contract, so labor begins. It also increases the production of prostaglandins, which move labor along and increases the contractions even more. Because of this effect, synthetic oxytocin (pitocin) is sometimes used to induce a woman to start labor if she cannot start naturally, or it can be given to make contractions stronger if a woman's labor is slowing.
Once the baby is born, oxytocin promotes lactation by moving the milk into the breast. When the baby sucks at the mother's breast, oxytocin secretion causes the milk to release so the baby can feed.
Vasopressin acts mainly at the kidney and stimulates resorption of water and electrolytes by the distal tubules and thereby reduces loss of water through urine.
Estrogens regulate development of female sexual organs and sexual behaviour. Progesterone supports pregnancy, acts on the mammary glands and stimulates the formation of alveoli (sac-like structures which store milk) and milk secretion.
