Which of the following events does NOT occur in preparation for pregnancy? The Secretory phase is due to the growth of endometrial glans & secretion of glycogen. After fertilization progesterone & estrogen begin to decline. The preparatory phase peaks at 1 week after ovulation. Without fertilization menstruation occurs. Progesterone & Estrogen cause thickening of the endometrium.

Q: After fertilization the blastocyst develops three germ layers. Which germ layer is the innermost…

A: In the human embryo , after about three days of fertilisation,the zygote forms a solid mass of cells…

Q: Hormonal birth control pills contain low doses of estrogen and progesterone.  Taking these pills…

A: FSH helps control the menstrual cycle and stimulates the growth of eggs in the ovaries.  LH triggers…

Q: Outline the role of the fetal hypothalamic-pituitary axis in parturition and given reasons why this…

A: The HPA axis is the main physiological system that mediates the body's stress response. It plays a…

Q: Name the extraembryonic membrane that gives rise toeach of the following: umbilical blood vessels,…

A: Embryology is the study of development and growth of fertilized eggs(zygote) into mature embryo that…

Q: What kinds of studies and information are required to determine whether a man’s exposure to a…

A: The teratogens are the naturally occurring or chemical compounds that have the ability to produce…

Q: Explain how breast milk is formed in the mammary glands and the physiology of breast milk

A: Breasts begin to develop at puberty. This development is stimulated by various hormones of the…

Q: Why is hCG secretion important during the first trimester

A: A member of the glycoprotein hormone family, the human chorionic gonadotropin hormone (hCG) is a…

Q: Compare and contrast the first, second, and third trimesters of pregnancy.

A: Introduction: Pregnancy or gestation is the interval during which the baby develops and grows inside…

Q: Why does testing for hCG (human chorionic gonadotropin)work as a pregnancy test early in pregnancy…

A: The hCG refers to the Human chorionic gonadotropin is a hormone produced by surrounding cells of a…

Q: What kind of hormone imbalances can lead to miscarriages during pregnancy?

A: Miscarriage means loss of a pregnancy during the first 20 weeks. Signs and symptoms of miscarriage…

Q: What anatomical feature permits coordinated contractions of the myometrium?

A: Myometrium is referred to as the middle region of the uterine wall. It is formed by the supporting…

Q: Describe the features and process of a fetus embryo at 10 weeks of pregnancy

A: Within twenty-four hours once fertilization, the egg that may become your baby quickly divides into…

Q: What is the state of gonadotropin secretion during pregnancy,and what is the cause?

A: During the time of pregnancy, there are several hormones released by the placenta and ovary for the…

Q: Trace the pathway taken by the oocyte from its release from the ovary to its implantation site in…

A: Ovary is the female reproductive system. Its diploid cells are called oogonia that undergoes meiosis…

Q: non-pregnant female's uterus shed its lining (the outer endometrial layer) every 4 weeks and then…

A: Pregnancy induces physiological changes in body functions to nurture the growth and development in…

Q: Describe what occurs during cleavage and the product of thisdevelopmental process.

A: Fertilization can be defined as the process which includes the fusion of sperm which is a male…

Q: What is the role of the HCG hormone in pregnancy?

A: HCG or Human Chorionic Gonadotropin hormone is one of the crucial hormones in pregnancy. Here we…

Q: By what means does the uterus greatly increase in size and weight during pregnancy?

A: The uterus is the organ of the body that facilitates the development of the fetus. The size and…

Q: What happens to progesterone and estrogen during the second and third trimesters of pregnancy?

A: The body undergoes a number of changes throughout pregnancy. The primary pregnancy hormones are…

Q: The childbirth process is controlled by a positive feedback mechanism. Explain how the mechanism…

A: Hormone are secreted by the endocrine glands. They are carried to their target by blood.  They…

Q: What would happen if human chorionic gonadotropin levels did not rise adequately during pregnancy?

A: Hormones are chemical messengers secreted by the glands present in the body. They are responsible…

Q: What is the physiological benefit of incorporatingshunts into the fetal circulatory system?

A: The fetus during pregnancy is dependent upon the mother for its nutrition. The circulatory system…

Q: Describe the hormonal changes during pregnancy and the effect of these hormones.

A: Hormones are the chemical molecules which acts as a chemical messenger for different body tissues…

Q: During third trimester of pregnancy

A: A pregnancy timeline is of 40 weeks. The weeks are grouped and divided into three trimesters. The…

Q: What is the main reason of pregnancy

A: Pregnancy refers to a state in which a fetus is developing inside a women's uterus. It takes 9…

Q: Discuss the critical effects of estrogen and progesterone during pregnancy.

A: Pregnancy can be described as a phase or gestation period during which an embryo formed after…

Q: at what point does life begins in a pregnancy, in other words, does it begin at initial conception,…

A: In human, haploid (n) sperm from male fused with haploid (n) egg cell of female to form a diploid…

Q: Which of the following rows correctly identifies the source of placental formation?

A: During pregnancy, the placenta attaches the developing fetus to the uterine wall of the mother. It…

Q: Describe the functions performed by the placenta for the developing embryo, and in each case,…

A: Human females give birth to live offspring. The fetus is attached to the uterus by an umbilical…