To determine: What would happen if the concentration of estrogen and progesterone is decreased sharply during early pregnancy.
Introduction: Gestation or pregnancy is the period during which an offspring develops within the uterus of a sexually mature woman. It involves several developmental stages of fetus. In humans, pregnancy period is nearly for nine months, which is divided into three trimesters involving several changes in mother and the growing fetus.
To determine: The reason for abortion of embryo if the concentration of estrogen and progesterone is decreased sharply during early pregnancy.
Introduction: Gestation or pregnancy is the period during which an offspring develops within the uterus of a sexually mature woman. It involves several developmental stages of fetus. In humans, pregnancy period is nearly for nine months, which is divided into three trimesters involving several changes in mother and the growing fetus.
Want to see the full answer?
Check out a sample textbook solutionChapter 50 Solutions
Biology (MindTap Course List)
- Describe the role of pregnancy hormones during human pregnancy. What hormones prepare the mammary glands for lactation and what hormones continue to be important during this process?arrow_forwardIf a woman 7.5 months pregnant is found to have a marked decrease in plasma estrogen but normal plasma progesterone for that time of pregnancy, what would you conclude?arrow_forwardExplain how hormones secreted by the pituitary gland, ovary, and chorion regulate the development of the placenta.arrow_forward
- Discuss the critical effects of estrogen and progesterone during pregnancy.arrow_forwardDescribe the development of reproductive organs in a fetus of each gender. Which genes, gene products, and hormones are involved in the sex differences? Which sex- related hormones are circulating in high concentrations in a pregnant woman compared to a nonpregnant woman? Do these hormones cross the placenta (if you are uncertain, consider hormone chemical class relative to membrane permeability to make an educated guess)? Assuming these hormones do cross the placenta, how do they affect the hormonal environment inside the fetus, and how does this relate to fetal reproductive development?arrow_forwardDescribe the most significant hormones responsible for sex differentiation. List the most important hormones during puberty. Describe the significance of hormonal regulation during pregnancy and present the changes in hormonal balance during menopause.arrow_forward
- Explain why oral contraceptives, which artificially raise levels of estrogens and progesterone, prevent pregnancy.arrow_forwardState the production sites and pregnancy-related functions of human chorionic gonadotropin, progesterone, estrogens, and relaxin.arrow_forwardPredict the effect on the endometrium of maintaining high progesteronelevels in the blood, including periods of time during which estrogennormally increases following menstruationarrow_forward
- Describe the role of progesterone in pregnancy including what produces it during pregnancy, its role in labor and delivery and how it effects at least two other body systems/tissues during pregnancy.arrow_forwardThe onset of labour both at term and preterm is associated with a functional withdrawl of progesterone activity at the level of the uterus. One method that can be used to reduce preterm labour is to supplement with synthetic progesterone. Progesterone supplementation may help to prevent preterm delivery by Select one: a. increasing levels of FSH b. decreasing the endometrium c. decreasing levels of estrogen d. calming uterine contractionsarrow_forwardList the major placental hormones and their primary roles in pregnancy. What is the primary basis for maternal pituitary enlargement during pregnancy?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning