A&P Ch 29 DSM #2

Which of the following hormones is not produced by the placenta?

FSH and LH

In an ectopic pregnancy

implantation occurs somewhere other than within the uterus

What is the medical specialty that focuses on the postnatal period from infancy through adolecence?

pediatrics

The stretching of the myometrium is associated with a gradual increase in the

rates of spontaneous smooth muscle contractions

Prostaglandins in the endometrium

stimulate smooth muscle contractions

The umbilical cord, or umbilical stalk, contains

the allantois, blood vessels, and yolk stalk

Exchange between the embryonic and the maternal circulations occurs by diffusion across the syncytial and cellular trophoblast layers via

the chorionic blood vessels

Which of the following is NOT one of the germ layers formed during gastrulation? a. mesoderm b. ectoderm c. endoderm d. trophoderm

trophoderm

Fraternal or dizygotic, twins result from

two oocytes being ovulated in one cycle

What is the extra-embryonic membrane that gives rise to the urinary bladder?

Allantois

Which of the following is NOT an effect of aging on organ systems? a. A reduction in the sensitivity and activity of the immune system b. An increase in the impairment of the reproductive system until a state of nonfunction, such as menopause, is reached c. An increase in peripheral blood flow d. A decrease in peristalsis and muscle tone along the digestive tract

An increase in peripheral blood flow

What is the correct sequence of events going from the zygote to the fetus?

Cleavage, implantation, placentation, embyogenesis

Which of the following is the term for aging, or growing old?

Senescence

What is the fate of the cluster of cells in the blastocyst known as the inner cell mass?

The cells will develop into the embryo

What happens in the process of hatching?

The zona pellucida is shed from the blastocyst

Which of the following is NOT a physiological effect on the mother's body during pregnancy? a. There is an increase in the size and activity of mammary glands. b. There is an increase of roughly 50 percent in the maternal glomerular filtration rate. c. There is an increase in tidal volume. d. There is a decrease in folic acid needs.

There is a decrease in folic acid needs.

Embryogenesis is the process that establishes the foundation for __________.

all the major organ systems

The first secretion produced by the mammary glands for the baby is

colostrum

During gestation, the primary compensatory adjustments include all of the following except a. increasing the glomerular filtration rate b. decreasing the respiratory rate and tidal volume c. increasing the requirements for nutrients d. increasing the maternal blood volume

decreasing the respiratory rate and tidal volume

What is the hormone that is produced by the placenta and stimulates the mother's ovaries to continue the production of progesterone?

hCG

Which of the following is NOT an effect of pregnancy on the mother? a. Maternal blood volume decreases. b. The mother's nutrient requirements increase. c. The uterus increases in size. d. Mammary glands increase in size, and secretory activity begins.

maternal blood volume decreases

Throughout embryonic and fetal development, metabolic wastes generated by the fetus are eliminated by their transfer to the

maternal circulation

The chorion develops from the

mesoderm and the trophoblast

The first stage of labor, during which the cervix opens, is called

the dilation stage

Which systems that are relatively nonfunctional during the fetus' prenatal period must become functional at birth?

the respiratory, digestive, and urinary systems