Question 1

A friend confides that she desires to have children but is having trouble conceiving.Which of the following is true regarding implantation?

Accepted Answer

A)  An estimated 60% of implanted embryos later miscarry due to genetic defects of the embryo. 
B)  Detection of human chorionic gonadotropin (hCG) in blood or urine indicates failure of the blastocyst to implant. 
C)  It is estimated that a minimum of two-thirds of all zygotes formed fail to implant by the end of the first week or spontaneously abort. 
D)  In cases where implantation fails to occur, a nonreceptive uterus becomes receptive once again. 
A)  An estimated 60% of implanted embryos later miscarry due to genetic defects of the embryo. 
B)  Detection of human chorionic gonadotropin (hCG) in blood or urine indicates failure of the blastocyst to implant. 
C)  It is estimated that a minimum of two-thirds of all zygotes formed fail to implant by the end of the first week or spontaneously abort. 
D)  In cases where implantation fails to occur, a nonreceptive uterus becomes receptive once again.

Question 2

Match the following:
-Leads to the development of a morula and then a blastocyst.

Accepted Answer

A) Implantation 
B) Capacitation 
C) Fertilization 
D) Gastrulation 
E) Cleavage 
A) Implantation 
B) Capacitation 
C) Fertilization 
D) Gastrulation 
E) Cleavage

Question 3

Conceptus is a term used to describe the developing human offspring.

Accepted Answer

A) True 
 B)False

Question 4

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

Accepted Answer

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

Question 5

Which hormone is NOT produced by the placenta?

Accepted Answer

A)  oxytocin 
B)  human placental lactogen 
C)  human chorionic gonadotropin 
D)  relaxin 
A)  oxytocin 
B)  human placental lactogen 
C)  human chorionic gonadotropin 
D)  relaxin

Question 6

A zygote is usually formed within the uterus.

Accepted Answer

A) True 
 B)False

Question 7

A couple interested in conceiving has been carefully charting her menstrual cycles for many months.Relative to ovulation,what window of time does coitus need to occur in order to achieve fertilization?

Accepted Answer

The oocyte is viable for 12 to 24 hours

Question 8

The placenta and its attached fetal membranes are collectively called the afterbirth.

Accepted Answer

A) True 
 B)False

Question 9

A blastocyst is a hollow ball of cells,while the morula is a solid ball of cells.

Accepted Answer

A) True 
 B)False

Question 10

Mrs.Phang,eight months pregnant with her first child,makes an appointment with her obstetrician to investigate the cause of vaginal bleeding.Because it is actually more "spotting" than frank bleeding,and painless,she is becoming worried.Ultrasound visualization of her abdomen shows that the placenta is formed across the internal os of the cervix,and she is ordered to her bed for the remainder of the pregnancy.What name is given to Mrs.Phang's condition? Why is it an extremely serious condition? Why was she ordered to have complete bed rest for the remainder of her pregnancy?

Accepted Answer

Mrs.Phang's condition is called placenta

Question 11

Which of the following is NOT a primary germ layer?

Accepted Answer

A)  epiderm 
B)  endoderm 
C)  mesoderm 
D)  ectoderm 
A)  epiderm 
B)  endoderm 
C)  mesoderm 
D)  ectoderm

Question 12

Match the following:
-Forms the chorion.

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 13

A 28-year-old woman has been in the first stage of labor for several hours.Her uterine contractions are weak,and her labor is not progressing normally.Because the woman insists upon a vaginal delivery,the physician orders that pitocin (a synthetic oxytocin)be infused.What will be the effect of pitocin? What is the normal mechanism by which oxytocin acts to promote birth?

Accepted Answer

Pitocin will act on the placenta,stimula

Question 14

Define Braxton Hicks contractions.

Accepted Answer

Braxton Hicks contractions are the weak,

Question 15

Which of the following refers to the transfer of sperm and harvested oocytes together into the woman's uterine tubes in the hopes that fertilization will take place there?

Accepted Answer

A)  in vitro fertilization (IVF) 
B)  zygote intrafallopian transfer (ZIFT) 
C)  rhythm method 
D)  gamete intrafallopian transfer (GIFT) 
A)  in vitro fertilization (IVF) 
B)  zygote intrafallopian transfer (ZIFT) 
C)  rhythm method 
D)  gamete intrafallopian transfer (GIFT)

Question 16

The embryo is directly enclosed in and protected by the amnion.

Accepted Answer

A) True 
 B)False

Question 17

Neural tissue develops from the ________.

Accepted Answer

A)  endoderm 
B)  mesoderm 
C)  ectoderm 
D)  entoderm 
A)  endoderm 
B)  mesoderm 
C)  ectoderm 
D)  entoderm

Question 18

Which of the following is true in reference to what may pass through the placental barriers?

Accepted Answer

A)  hormones, blood cells, and nutrients 
B)  nutrients and respiratory gases only 
C)  respiratory gases, hormones, nutrients, and blood cells 
D)  nutrients, respiratory gases, wastes, and alcohol 
A)  hormones, blood cells, and nutrients 
B)  nutrients and respiratory gases only 
C)  respiratory gases, hormones, nutrients, and blood cells 
D)  nutrients, respiratory gases, wastes, and alcohol

Question 19

At what point is meiosis II completed for the female gamete?

Accepted Answer

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

Question 20

Of the three germ layers,the mesoderm forms the most body parts.

Accepted Answer

A) True 
 B)False

Exam 28: Pregnancy and Human Development

A friend confides that she desires to have children but is having trouble conceiving.Which of the following is true regarding implantation?

Match the following: -Leads to the development of a morula and then a blastocyst.

Conceptus is a term used to describe the developing human offspring.

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

Which hormone is NOT produced by the placenta?

A zygote is usually formed within the uterus.

A couple interested in conceiving has been carefully charting her menstrual cycles for many months.Relative to ovulation,what window of time does coitus need to occur in order to achieve fertilization?

The placenta and its attached fetal membranes are collectively called the afterbirth.

A blastocyst is a hollow ball of cells,while the morula is a solid ball of cells.

Which of the following is NOT a primary germ layer?

Match the following: -Forms the chorion.

Define Braxton Hicks contractions.

Which of the following refers to the transfer of sperm and harvested oocytes together into the woman's uterine tubes in the hopes that fertilization will take place there?

The embryo is directly enclosed in and protected by the amnion.

Neural tissue develops from the ________.

Which of the following is true in reference to what may pass through the placental barriers?

At what point is meiosis II completed for the female gamete?

Of the three germ layers,the mesoderm forms the most body parts.

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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