Exam 28: Pregnancy and Human Development

Derivatives of the mesoderm include ________.

The corpus luteum prevents loss of the implanted embryo through menstruation by secreting ________.

Figure 28.2 Using Figure 28.2, match the following: -Extraembryonic membrane that develops from the trophoblast and some extraembryonic mesoderm,and forms part of the placenta.

The lactation nurse visits a first-time mother six hours after her delivery of a healthy 8-pound boy.The patient is giving the baby boy a bottle of sugar water.She tells the lactation nurse that she does not seem to be producing milk.What should the nurse say to the patient?

Implantation begins six to seven days after ovulation.

Derivatives of the endoderm include ________.

Milk ejection (the letdown reflex)is stimulated by which of the following hormones associated with pregnancy?

In the block to polyspermy,entry of the sperm's contents causes ________ levels in the oocyte's cytoplasm to rise,triggering the cortical reaction.

Sperm move to the uterine tube through uterine contractions and the energy of their own flagella.What other factor is involved in sperm movement?

The first major event in organogenesis is ________.

By 72 hours after fertilization,the egg has divided into more than 160 cells and is called the morula.

In fetal circulation,one way in which blood bypasses the nonfunctional lungs is by way of the foramen ovale.

Match the following: -Surrounds the uterine cavity face of the implanted embryo.

How are the metabolic needs of the implanted embryo provided for?

At which stage of labor is the "afterbirth" expelled?

Figure 28.2 Using Figure 28.2, match the following: -The part of the endometrium destined to be a part of the placenta.

Surfactant production in premature infants is rarely a factor in providing normal respiratory activity.

The cardiovascular system of a newborn must be adjusted after the infant takes its first breath.Which of the following is also true?

When do we begin to call the developing individual a fetus rather than an embryo?