A baby suckling from the breast, stimulates the letdown of milk from the lactiferous lobules, is another example of positive feedback. True False
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A baby suckling from the breast, stimulates the letdown of milk from the lactiferous lobules, is another example of positive feedback.
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- For each hormone, select whether the hormone is increasing or decreasing at the beginning of parturition. In addition, select the correct effect that the change in hormone secretion causes. Hormone Levels Resulting Effect Increasing Decreasing Causes the endometrial layer to break away from the uterus Causes the endometrial layer to be maintained Increases uterine contractions Decreases uterine contractions Increases milk production in the mother's breasts Decrease milk production in the mother's breasts Hormone Hormone Levels Resulting Effect Estrogen Progesterone Oxytocin Prostaglandins ProlactinDuring the first trimester of pregnancy, many women feel anxious about ingesting the right amount of nutrients. True FalseProlactin makes the milk, whereas oxytocin ejects the milk out from the mammary glands True False
- Which of the following is a result of prolactin. milk production, the uterine cycle, for distribution, breast development, or body hair distributionExplain the positive feedback mechanism involved with lactation and milk letdown, and describe the function of the hormones prolactin and oxytocin during this process.A woman is in labor. The size of the fetus combined with the contractions of the uterine muscular layer stretches the uterine wall, stimulating stretch receptors in the cervix. Signals from these receptors are conducted through nerves to the hypothalamus/posterior pituitary. The hypothalamus/posterior pituitary releases oxytocin. The oxytocin travels through the blood and stimulates the smooth muscle layer of the uterus. Oxytocin has two effects on the uterine smooth muscle:1. Itdirectlystimulatesthesmoothmuscletocontractmorefrequentlyandmoreforcefully.2. Itcausestheuterinewalltoreleaseprostaglandins,whichincreasethefrequencyandforceofthe contractions even more.These effects push the fetus more forcefully into the cervix, stimulating the stretch receptors further. The receptors send additional impulses to the hypothalamus/posterior pituitary. The increased activation of the hypothalamus/posterior pituitary stimulates release of additional oxytocin, which further stimulates the uterus.…
- Storage of milk is found within the of the breast . Montgomery's tubercles Lactiferous ducts Myoepithelium AlveoliDescribe the positive feedback that is used during parturition. Make sure to include both hormones involved in parturition.The core of a chorionic villus of a placenta is occupied by foetal connective tissue known as what
- The hormone that induces milk production in women is while ----- hormone promotes milk ejection. prolactin estradiol. luteinizing oxytocin From the following hormones, which hormone regulated by negative feedback mechanism. parathyroid hormone glucagon hormone somatotropin hormone prolactinWhich pituitary hormone might contribute to multiple births and why? Which pituitary hormone might contribute to multiple births and why? Luteinizing hormone stimulates ovulation. Ovulation of more than one egg cell per cycle can result in the formation of multiple embryos. Follicle-stimulating hormone stimulates follicle maturation allowing more than one egg cell to develop during one cycle. Oxytocin promotes uterine contractions necessary to deliver multiple babies. Prolactin stimulates milk production to support multiple births.Which of the following describes the role of Luteinizing hormone in the ovarian cycle? o Inhibits the hypothalamus from secreting GNRH o Directly promotes thickening of the endometrium o Simulates the ovary to increase aldosterone o Induces the corpus luteum to secrete progesterone Stimulates lactation in the mammary glands