Question 1

This outer extraembryonic membrane forms finger-like projections called villi and helps form the placenta.

Accepted Answer

A)  amnion 
B)  chorion 
C)  umbilicus 
D)  trophoblast 
A)  amnion 
B)  chorion 
C)  umbilicus 
D)  trophoblast B

Question 2

Which of the following is an example of nondisjunction?

Accepted Answer

A)  fetal alcohol syndrome 
B)  spina bifida secondary to maternal infection with rubella 
C)  Down syndrome 
D)  twinning 
A)  fetal alcohol syndrome 
B)  spina bifida secondary to maternal infection with rubella 
C)  Down syndrome 
D)  twinning C

Question 3

Which of the following gives rise to the endoderm,mesoderm,and ectoderm?

Accepted Answer

A)  the zygote 
B)  the extraembryonic membranes 
C)  primary germ layers 
D)  the placenta 
A)  the zygote 
B)  the extraembryonic membranes 
C)  primary germ layers 
D)  the placenta C

Question 4

Which of the following is true of implantation?

Accepted Answer

A)  It is called conception. 
B)  It is divided into trimesters. 
C)  It is stimulated by FSH and LH. 
D)  It occurs within the uterus. 
A)  It is called conception. 
B)  It is divided into trimesters. 
C)  It is stimulated by FSH and LH. 
D)  It occurs within the uterus.

Question 5

Which of the following best describes the amnion,chorion,yolk sac,and allantois?

Accepted Answer

A)  primary germ layers 
B)  inner cell mass 
C)  dizygotic twins 
D)  extraembryonic membranes 
A)  primary germ layers 
B)  inner cell mass 
C)  dizygotic twins 
D)  extraembryonic membranes

Question 6

What is the hormonal basis of the pregnancy test?

Accepted Answer

A)  estrogen 
B)  prostaglandin 
C)  oxytocin 
D)  human chorionic gonadotropin (hCG) 
A)  estrogen 
B)  prostaglandin 
C)  oxytocin 
D)  human chorionic gonadotropin (hCG)

Question 7

What is in the "pill" that makes it contraceptive?

Accepted Answer

A)  estrogen and progesterone 
B)  prostaglandins 
C)  human chorionic gonadotropin 
D)  prolactin 
A)  estrogen and progesterone 
B)  prostaglandins 
C)  human chorionic gonadotropin 
D)  prolactin

Question 8

How is a child with X and Y chromosomes best described?

Accepted Answer

A)  as having Down syndrome 
B)  as hemophiliac 
C)  as immature 
D)  as male 
A)  as having Down syndrome 
B)  as hemophiliac 
C)  as immature 
D)  as male

Question 9

The blastocyst

Accepted Answer

A)  lives in the uterus. 
B)  is a fetal structure. 
C)  lives in the fallopian tube. 
D)  is an estrogen-secreting ovarian structure. 
A)  lives in the uterus. 
B)  is a fetal structure. 
C)  lives in the fallopian tube. 
D)  is an estrogen-secreting ovarian structure.

Question 10

From week 3 to week 8,baby-to-be is called a(n)

Accepted Answer

A)  zygote. 
B)  morula. 
C)  fetus. 
D)  embryo. 
A)  zygote. 
B)  morula. 
C)  fetus. 
D)  embryo.

Question 11

This disc-like structure is the site where the fetal and maternal circulations meet;baby eats,excretes,and breathes at this site.

Accepted Answer

A)  umbilicus 
B)  placenta 
C)  primary germ layers 
D)  zygote 
A)  umbilicus 
B)  placenta 
C)  primary germ layers 
D)  zygote

Question 12

Which of the following is most related to fertilization?

Accepted Answer

A)  broad ligament 
B)  implantation 
C)  menses 
D)  23 chromosomes plus 23 chromosomes 
A)  broad ligament 
B)  implantation 
C)  menses 
D)  23 chromosomes plus 23 chromosomes

Question 13

Who or what determines the gender of the baby?

Accepted Answer

A)  placenta 
B)  zygote 
C)  father 
D)  mother 
A)  placenta 
B)  zygote 
C)  father 
D)  mother

Question 14

What term describes the ectoderm,mesoderm,and endoderm?

Accepted Answer

A)  inner cell mass 
B)  extraembryonic membranes 
C)  primary germ layers 
D)  blastomeres 
A)  inner cell mass 
B)  extraembryonic membranes 
C)  primary germ layers 
D)  blastomeres

Question 15

Afterbirth refers primarily to this structure.

Accepted Answer

A)  morula 
B)  zygote 
C)  fetus 
D)  placenta 
A)  morula 
B)  zygote 
C)  fetus 
D)  placenta

Question 16

What is the name of the developmental process that refers to the shaping of the cell cluster?

Accepted Answer

A)  implantation 
B)  conception 
C)  morphogenesis 
D)  fertilization 
A)  implantation 
B)  conception 
C)  morphogenesis 
D)  fertilization

Question 17

Which of the following is divided into trimesters?

Accepted Answer

A)  conception 
B)  fertilization 
C)  pregnancy 
D)  ovulation 
A)  conception 
B)  fertilization 
C)  pregnancy 
D)  ovulation

Question 18

This yellowish watery fluid is secreted by the mammary glands immediately after delivery;baby feeds on this until the mother's milk comes in.

Accepted Answer

A)  lanugo 
B)  vernix caseosa 
C)  meconium 
D)  colostrum 
A)  lanugo 
B)  vernix caseosa 
C)  meconium 
D)  colostrum

Question 19

In addition to acting as an exchange site between the mother and fetus,the placenta also secretes

Accepted Answer

A)  estrogen and progesterone. 
B)  amniotic fluid. 
C)  vernix caseosa. 
D)  colostrum. 
A)  estrogen and progesterone. 
B)  amniotic fluid. 
C)  vernix caseosa. 
D)  colostrum.

Question 20

Which of the following is least related to the sex chromosomes?

Accepted Answer

A)  XX 
B)  XY 
C)  autosomes 
D)  X-linked 
A)  XX 
B)  XY 
C)  autosomes 
D)  X-linked

Exam 27: Human Development and Heredity

This outer extraembryonic membrane forms finger-like projections called villi and helps form the placenta.

Which of the following is an example of nondisjunction?

Which of the following gives rise to the endoderm,mesoderm,and ectoderm?

Which of the following is true of implantation?

Which of the following best describes the amnion,chorion,yolk sac,and allantois?

What is the hormonal basis of the pregnancy test?

What is in the "pill" that makes it contraceptive?

How is a child with X and Y chromosomes best described?

The blastocyst

From week 3 to week 8,baby-to-be is called a(n)

This disc-like structure is the site where the fetal and maternal circulations meet;baby eats,excretes,and breathes at this site.

Which of the following is most related to fertilization?

Who or what determines the gender of the baby?

What term describes the ectoderm,mesoderm,and endoderm?

Afterbirth refers primarily to this structure.

What is the name of the developmental process that refers to the shaping of the cell cluster?

Which of the following is divided into trimesters?

This yellowish watery fluid is secreted by the mammary glands immediately after delivery;baby feeds on this until the mother's milk comes in.

In addition to acting as an exchange site between the mother and fetus,the placenta also secretes

Which of the following is least related to the sex chromosomes?

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Heart

Function of the Heart

Anatomy of the Blood Vessels

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water,Electrolyte,and Acid-Base Balance

Reproductive Systems

Filters