Asked in Uncategorized
What hormone is secreted to establish lactation after birth?
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Asked in Lactation and Breastfeeding
What does lactation mean?
Asked in Human Anatomy and Physiology
Which hormone is secreted by the posterior lobe of the pituitary gland?
Asked in Human Anatomy and Physiology
What is the function of PRL?
Asked in Pregnancy
What hormones are produced during pregnancy?
There are a number of different hormones involved in pregnancy, and I will outline the main hormones and their purposes below: Human Chorionic Gonadotrophin - this is involved in the maintanence of the corpus luteum, which secretes progesterone and oestrogen during the first 12 weeks of pregnancy, after which the placenta takes over production of these hormones. This hormone is secreted by the chorion/placenta. Oestrogen - initially secreted by the corpus luteum up to 12 weeks, after which placenta takes over secretion of this hormone.Oestrogen inhibits the hormones FSH (Follicle Stimulating Hormone) and LH ( Lutenising hormone), both of which are involved in the process of ovulation in a menstruating woman. During pregnancy, menstruation must stop, and so Oestrogen inhibits these 2 hormones. It also acts on the uterus, causing growth of the uterus and increasing the sensitivity of the uterus to the hormone oxytocin which is involved in the processes of birth and lactation. It also inhibits the hormone prolactin, and thus inhibits lactation during pregnancy. However, it stimulates the development of the ductal system in the breasts in preparation for lactation after the baby has been born. Causes a softening and relaxing of the ligament of the pelvic girdle. Progesterone - again this is initially secreted by the corpus luteum, and later by the placenta. It stimulates the development of milk glands, and also inhibits the secretion of prolactin ( in order to stop lactation) and also inhibits FSH and LH. It stimulates growth and glandular activity of the uterus. It is essential for successful implantation and maintainence of the endometrium, stimulates endometrial glands to secrete nutrients taken up by the developing embryo and slightl supresses the mother's immune system so the foetus is not rejected. As a steroid hormone, it is transferred to the fetus and used by the fetus for production of fetal hormones by the fetal adrenals. It also quitens muscular contractions of the uterus to prevent premature expulsion of the fetus, causes mammary glands to develop and enhances their ability to produce milk. Human placental lactogen - hormone made in the placenta which gives foetus priority over maternal glucose and fatty acids. Also known as Human Chorionic Somatomammotrophin. Prolactin - secreted by the maternal anterior lobe of pituitary gland, it is essential for expression of oestrogen and progesterone on the mammary glands. Having said that, oestrogen (and progesterone) inhibits lactation until birth. When levels of Oestrogen and Progesterone then decrease after birth, prolactin can exert its effects fully and lactation can take place. Relaxin - Causes the relaxation of ligaments, softens the cervix and inhibits muscle contractions.
Asked in Supernatural and the Occult
What is witch's milk?
Noun. Milk secreted from the breasts of newborn babies, due to the large amount of female hormones responsible for lactation (prolactin) in the baby's body received from her mother which is producing these hormones in preparation for the lactation period. Also called "Neonatal Milk" or "Infant Galactorrhea", it is normal, and stops after 8 to 10 weeks after birth. Noun. Milk which belongs to a witch.
Asked in Birth Control Pill
Are birth control pills and hormone pills the same?
Asked in Health
What is the lactation period of sheep?
Lactation is the production of milk by the mammary glands and occurs during pregnancy and after birth if the offspring are being fed their mother's milk. The lactation period of sheep depends upon how long they are allowed to feed their young or how long they are milked for. When either of these cease, so does milk production.
Asked in Cattle Reproduction
What is the meaning of the term lactation period of a cow?
Why oxytocin is called birth hormone?
Asked in Labor and Birth
How long does pregnancy hormone last in your body after giving birth?
Asked in Health, Lactation and Breastfeeding
How you can breastfeed without being pregnant?