Question 1

A urine test reveals a positive result for human chorionic gonadotropin (hCG).This indicates ________ was successful.

Accepted Answer

A)  gastrulation 
B)  fertilization 
C)  ovulation 
D)  implantation 
A)  gastrulation 
B)  fertilization 
C)  ovulation 
D)  implantation D

Question 2

During which stage of labor is the fetus delivered?

Accepted Answer

A)  expulsion stage 
B)  gastrula stage 
C)  placental stage 
D)  dilation stage 
A)  expulsion stage 
B)  gastrula stage 
C)  placental stage 
D)  dilation stage A

Question 3

List four factors that help to precipitate parturition (birth).

Accepted Answer

Four factors that help to precipitate parturition include: (1)estrogens peak to their highest levels in the mother's blood,causing irregular uterine contractions due to oxytocin and negation of progesterone's influence on the uterine muscle; (2)prostaglandins are stimulated by the increase in oxytocin to act as uterine muscle stimulants; (3)increasing emotional and physical stressors activate the mother's hypothalamus,which signals oxytocin release; and (4)certain cells of the fetus begin to produce oxytocin,which in turn acts on the placenta,stimulating production and release of prostaglandins.

Question 4

Figure 28.2
Using Figure 28.2, match the following:
-The part of the endometrium that surrounds the uterine cavity face of the implanted embryo.

Accepted Answer

A) C 
B) E 
C) A 
D) D 
E) B 
A) C 
B) E 
C) A 
D) D 
E) B

Question 5

Freshly deposited sperm are not immediately capable of penetrating an oocyte.

Accepted Answer

A) True 
 B)False

Question 6

Fertilization occurs while the egg is still in the ovarian follicle.

Accepted Answer

A) True 
 B)False

Question 7

A pregnant woman urinates more often than usual because the uterus compresses the bladder,her metabolic rate and blood volume are increased,and she must also dispose of fetal metabolic wastes.

Accepted Answer

A) True 
 B)False

Question 8

The placenta,a vitally important metabolic organ,is made up of a contribution from mother and fetus.Which portion is from the fetus?

Accepted Answer

A)  yolk sac 
B)  umbilicus 
C)  chorion 
D)  amnion 
A)  yolk sac 
B)  umbilicus 
C)  chorion 
D)  amnion

Question 9

The correct sequence of preembryonic structures is ________.

Accepted Answer

A)  blastocyst, morula, zygote 
B)  zygote, blastocyst, morula 
C)  zygote, morula, blastocyst 
D)  morula, zygote, blastocyst 
A)  blastocyst, morula, zygote 
B)  zygote, blastocyst, morula 
C)  zygote, morula, blastocyst 
D)  morula, zygote, blastocyst

Question 10

Figure 28.1
Using Figure 28.1, match the following:
-Pancreas.

Accepted Answer

A) A 
B) B 
C) D 
D) E 
E) C 
A) A 
B) B 
C) D 
D) E 
E) C

Question 11

It is impossible for sperm to be functional (able to fertilize the egg)until after ________.

Accepted Answer

A)  the tail disappears 
B)  they have been stored in the uterus for several days 
C)  they become spermatids 
D)  they undergo capacitation 
A)  the tail disappears 
B)  they have been stored in the uterus for several days 
C)  they become spermatids 
D)  they undergo capacitation

Question 12

As the infant's head is forced against the cervix with each contraction,the cervix effaces,which means that it ________.

Accepted Answer

A)  crowns 
B)  dilates 
C)  softens 
D)  thins 
A)  crowns 
B)  dilates 
C)  softens 
D)  thins

Question 13

Select the correct statement about the special fetal blood vessels.

Accepted Answer

A)  The distal parts of the umbilical arteries form the superior vesical arteries. 
B)  The umbilical vein becomes the ligamentum teres. 
C)  The hepatic portal vein forms from the umbilical artery. 
D)  The fossa ovalis becomes the foramen ovale. 
A)  The distal parts of the umbilical arteries form the superior vesical arteries. 
B)  The umbilical vein becomes the ligamentum teres. 
C)  The hepatic portal vein forms from the umbilical artery. 
D)  The fossa ovalis becomes the foramen ovale.

Question 14

The patient is in her first trimester of pregnancy.She complains of feeling nauseated and has vomited on occasion.She tells the nurse that she did not have this with her first pregnancy.She asks the nurse,"What is causing this and when will it end?" How should the nurse respond?

Accepted Answer

The nurse should explain that nausea is

Question 15

Match the following:
-A solid sphere of undifferentiated cells.

Accepted Answer

A) Trophoblast 
B) Decidua basalis 
C) Decidua capsularis 
D) Inner cell mass 
E) Morula 
A) Trophoblast 
B) Decidua basalis 
C) Decidua capsularis 
D) Inner cell mass 
E) Morula

Question 16

Gastrulation begins when a groove with raised edges called the ________ appears on the dorsal surface of the embryonic disc.

Accepted Answer

A)  notochord 
B)  placenta 
C)  primitive streak 
D)  spinal cord 
A)  notochord 
B)  placenta 
C)  primitive streak 
D)  spinal cord

Question 17

Relaxin is a hormone produced by the placenta and ovaries.The function of this hormone is to ________.

Accepted Answer

A)  ensure the implantation of the blastula 
B)  block the pain of childbirth 
C)  prevent morning sickness 
D)  relax the pubic symphysis 
A)  ensure the implantation of the blastula 
B)  block the pain of childbirth 
C)  prevent morning sickness 
D)  relax the pubic symphysis

Question 18

Figure 28.2
Using Figure 28.2, match the following:
-Site of early blood cell production,and forms part of the gut (digestive tube).

Accepted Answer

A) C 
B) E 
C) A 
D) D 
E) B 
A) C 
B) E 
C) A 
D) D 
E) B

Question 19

Which body system of a pregnant woman undergoes the most dramatic physiological changes during pregnancy?

Accepted Answer

A)  respiratory system 
B)  urinary system 
C)  digestive system 
D)  cardiovascular system 
A)  respiratory system 
B)  urinary system 
C)  digestive system 
D)  cardiovascular system

Question 20

The decidua basalis is ________.

Accepted Answer

A)  the tissue that surrounds the uterine cavity face of the implanted embryo 
B)  destined to remain in the uterus after the birth of the infant 
C)  the part of the endometrium that lies beneath the embryo 
D)  not a maternal contribution to the placenta 
A)  the tissue that surrounds the uterine cavity face of the implanted embryo 
B)  destined to remain in the uterus after the birth of the infant 
C)  the part of the endometrium that lies beneath the embryo 
D)  not a maternal contribution to the placenta

Exam 28: Pregnancy and Human Development

A urine test reveals a positive result for human chorionic gonadotropin (hCG).This indicates ________ was successful.

During which stage of labor is the fetus delivered?

List four factors that help to precipitate parturition (birth).

Figure 28.2 Using Figure 28.2, match the following: -The part of the endometrium that surrounds the uterine cavity face of the implanted embryo.

Freshly deposited sperm are not immediately capable of penetrating an oocyte.

Fertilization occurs while the egg is still in the ovarian follicle.

A pregnant woman urinates more often than usual because the uterus compresses the bladder,her metabolic rate and blood volume are increased,and she must also dispose of fetal metabolic wastes.

The placenta,a vitally important metabolic organ,is made up of a contribution from mother and fetus.Which portion is from the fetus?

The correct sequence of preembryonic structures is ________.

Figure 28.1 Using Figure 28.1, match the following: -Pancreas.

It is impossible for sperm to be functional (able to fertilize the egg)until after ________.

As the infant's head is forced against the cervix with each contraction,the cervix effaces,which means that it ________.

Select the correct statement about the special fetal blood vessels.

The patient is in her first trimester of pregnancy.She complains of feeling nauseated and has vomited on occasion.She tells the nurse that she did not have this with her first pregnancy.She asks the nurse,"What is causing this and when will it end?" How should the nurse respond?

Match the following: -A solid sphere of undifferentiated cells.

Gastrulation begins when a groove with raised edges called the ________ appears on the dorsal surface of the embryonic disc.

Relaxin is a hormone produced by the placenta and ovaries.The function of this hormone is to ________.

Figure 28.2 Using Figure 28.2, match the following: -Site of early blood cell production,and forms part of the gut (digestive tube).

Which body system of a pregnant woman undergoes the most dramatic physiological changes during pregnancy?

The decidua basalis is ________.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defenses

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Heredity

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