Question 1

The extraembryonic membrane that forms blood cells and gives rise to cells destined to become sex cells is the ________.

Accepted Answer

yolk sac

Question 2

Teratogens are substances that

Accepted Answer

A)  stimulate embryonic growth. 
B)  cause congenital malformations. 
C)  protect against infections. 
D)  prevent accumulation of cholesterol. 
E)  stimulate fetal growth. 
A)  stimulate embryonic growth. 
B)  cause congenital malformations. 
C)  protect against infections. 
D)  prevent accumulation of cholesterol. 
E)  stimulate fetal growth. B

Question 3

A multifactorial trait is

Accepted Answer

A)  determined solely by environmental factors. 
B)  determined solely by genetic factors. 
C)  determined by neither genetic nor environmental factors. 
D)  determined by one or more genes and environmental factors. 
E)  determined by proteins. 
A)  determined solely by environmental factors. 
B)  determined solely by genetic factors. 
C)  determined by neither genetic nor environmental factors. 
D)  determined by one or more genes and environmental factors. 
E)  determined by proteins. D

Question 4

Drugs ingested by a pregnant woman most likely reach her fetus by passing through the

Accepted Answer

A)  allantois. 
B)  amniotic membrane. 
C)  placental membrane. 
D)  body stalk. 
E)  yolk sac. 
A)  allantois. 
B)  amniotic membrane. 
C)  placental membrane. 
D)  body stalk. 
E)  yolk sac.

Question 5

Which of the following best describes the numbers of blood vessels usually found in the umbilical cord?

Accepted Answer

A)  one artery and one vein 
B)  two arteries and one vein 
C)  one artery and two veins 
D)  two arteries and two veins 
E)  two arteries and no veins 
A)  one artery and one vein 
B)  two arteries and one vein 
C)  one artery and two veins 
D)  two arteries and two veins 
E)  two arteries and no veins

Question 6

A newborn's first breath must be particularly forceful since the moist membranes of the lungs are held together by ________.

Accepted Answer

The answer of A newborn's first breath must be particularly...

Question 7

The external reproductive organs can be distinguished by the ________ week of development

Accepted Answer

A)  first 
B)  fifth 
C)  eighth 
D)  twelfth 
E)  fifteenth 
A)  first 
B)  fifth 
C)  eighth 
D)  twelfth 
E)  fifteenth

Question 8

The hormone oxytocin aids the birth process by stimulating

Accepted Answer

A)  fetal muscular movements. 
B)  uterine wall contractions. 
C)  an increase in progesterone secretion. 
D)  an increase in estrogen secretion. 
E)  rapid movement of fetal feet. 
A)  fetal muscular movements. 
B)  uterine wall contractions. 
C)  an increase in progesterone secretion. 
D)  an increase in estrogen secretion. 
E)  rapid movement of fetal feet.

Question 9

Which of the following nutrients provides the most energy to the newborn baby during its first few days?

Accepted Answer

A)  glucose 
B)  glycogen 
C)  stored fat 
D)  protein 
E)  fat in the colostrum 
A)  glucose 
B)  glycogen 
C)  stored fat 
D)  protein 
E)  fat in the colostrum

Question 10

Dizygotic twins result from the combination of

Accepted Answer

A)  one egg cell and one sperm cell. 
B)  one egg cell and two sperm cells. 
C)  two egg cells and one sperm cell. 
D)  two egg cells and two sperm cells. 
E)  one trophoblast and two blastocysts. 
A)  one egg cell and one sperm cell. 
B)  one egg cell and two sperm cells. 
C)  two egg cells and one sperm cell. 
D)  two egg cells and two sperm cells. 
E)  one trophoblast and two blastocysts.

Question 11

The symptoms of fetal alcohol syndrome include

Accepted Answer

A)  reduced head size. 
B)  mental retardation. 
C)  abnormal facial features. 
D)  misshapen eyes. 
E)  all of the above. 
A)  reduced head size. 
B)  mental retardation. 
C)  abnormal facial features. 
D)  misshapen eyes. 
E)  all of the above.

Question 12

The condition characterized by the presence of a developing embryo within the uterus is called ________.

Accepted Answer

The answer of The condition characterized by the presence of...

Question 13

A person with two identical variants (alleles)for a gene is

Accepted Answer

A)  heterozygous. 
B)  homozygous. 
C)  autosomal. 
D)  a carrier. 
E)  dominant. 
A)  heterozygous. 
B)  homozygous. 
C)  autosomal. 
D)  a carrier. 
E)  dominant.

Question 14

Muscle contractions of the uterine wall and ________ in the semen aid sperm cell movement through the uterus and uterine tubes.

Accepted Answer

A)  estrogen 
B)  progestins 
C)  prostaglandins 
D)  epinephrine 
E)  norepinephrine 
A)  estrogen 
B)  progestins 
C)  prostaglandins 
D)  epinephrine 
E)  norepinephrine

Question 15

The period of development in which the cells of a zygote become progressively smaller as cell division occurs is called ________.

Accepted Answer

The answer of The period of development in which the...

Question 16

The ductus arteriosus allows fetal blood to bypass the liver.

Accepted Answer

A) True 
 B)False

Question 17

The combining of a secondary oocyte and a sperm cell is called

Accepted Answer

A)  fertilization. 
B)  implantation. 
C)  cleavage. 
D)  labor. 
E)  development. 
A)  fertilization. 
B)  implantation. 
C)  cleavage. 
D)  labor. 
E)  development.

Question 18

The genotypes and phenotypes that result from the cross of Aa and Aa (A=normal pigmentation and a=albinism)are

Accepted Answer

A)  genotypes-25% AA,50% Aa,25% aa;phenotypes-75% normal,25% albino. 
B)  genotypes-100% aa;phenotypes-50% normal,50% albino. 
C)  genotypes-50% AA,50% aa;phenotypes-50% normal,50% albino. 
D)  genotypes-25% AA,50% Aa,25% aa;phenotypes-25% normal,75% albino. 
E)  genotypes-75% AA,25% aa;phenotypes-75% normal,25% albino. 
A)  genotypes-25% AA,50% Aa,25% aa;phenotypes-75% normal,25% albino. 
B)  genotypes-100% aa;phenotypes-50% normal,50% albino. 
C)  genotypes-50% AA,50% aa;phenotypes-50% normal,50% albino. 
D)  genotypes-25% AA,50% Aa,25% aa;phenotypes-25% normal,75% albino. 
E)  genotypes-75% AA,25% aa;phenotypes-75% normal,25% albino.

Question 19

Blood rich in oxygen and nutrients is transported from the placenta to the fetus by the

Accepted Answer

A)  umbilical artery. 
B)  umbilical vein. 
C)  ductus venosus. 
D)  ductus arteriosus. 
E)  foramen ovale. 
A)  umbilical artery. 
B)  umbilical vein. 
C)  ductus venosus. 
D)  ductus arteriosus. 
E)  foramen ovale.

Question 20

An enzyme that sperm secrete that is important for penetration of the egg is

Accepted Answer

A)  hyaluronidase. 
B)  collagenase. 
C)  peptidase. 
D)  acetylcholinesterase. 
E)  copulase. 
A)  hyaluronidase. 
B)  collagenase. 
C)  peptidase. 
D)  acetylcholinesterase. 
E)  copulase.

The extraembryonic membrane that forms blood cells and gives rise to cells destined to become sex cells is the ________.

Teratogens are substances that

A multifactorial trait is

Drugs ingested by a pregnant woman most likely reach her fetus by passing through the

Which of the following best describes the numbers of blood vessels usually found in the umbilical cord?

A newborn's first breath must be particularly forceful since the moist membranes of the lungs are held together by ________.

The external reproductive organs can be distinguished by the ________ week of development

The hormone oxytocin aids the birth process by stimulating

Which of the following nutrients provides the most energy to the newborn baby during its first few days?

Dizygotic twins result from the combination of

The symptoms of fetal alcohol syndrome include

The condition characterized by the presence of a developing embryo within the uterus is called ________.

A person with two identical variants (alleles)for a gene is

Muscle contractions of the uterine wall and ________ in the semen aid sperm cell movement through the uterus and uterine tubes.

The period of development in which the cells of a zygote become progressively smaller as cell division occurs is called ________.

The ductus arteriosus allows fetal blood to bypass the liver.

The combining of a secondary oocyte and a sperm cell is called

The genotypes and phenotypes that result from the cross of Aa and Aa (A=normal pigmentation and a=albinism)are

Blood rich in oxygen and nutrients is transported from the placenta to the fetus by the

An enzyme that sperm secrete that is important for penetration of the egg is

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Muscular System

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System

Water, electrolyte, and Acid-Base Balance

Reproductive Systems

Filters

Exam 20: Pregnancy, growth, development, and Genetics

The extraembryonic membrane that forms blood cells and gives rise to cells destined to become sex cells is the ________.

Teratogens are substances that

A multifactorial trait is

Drugs ingested by a pregnant woman most likely reach her fetus by passing through the

Which of the following best describes the numbers of blood vessels usually found in the umbilical cord?

A newborn's first breath must be particularly forceful since the moist membranes of the lungs are held together by ________.

The external reproductive organs can be distinguished by the ________ week of development

The hormone oxytocin aids the birth process by stimulating

Which of the following nutrients provides the most energy to the newborn baby during its first few days?

Dizygotic twins result from the combination of

The symptoms of fetal alcohol syndrome include

The condition characterized by the presence of a developing embryo within the uterus is called ________.

A person with two identical variants (alleles)for a gene is

Muscle contractions of the uterine wall and ________ in the semen aid sperm cell movement through the uterus and uterine tubes.

The period of development in which the cells of a zygote become progressively smaller as cell division occurs is called ________.

The ductus arteriosus allows fetal blood to bypass the liver.

The combining of a secondary oocyte and a sperm cell is called

The genotypes and phenotypes that result from the cross of Aa and Aa (A=normal pigmentation and a=albinism)are

Blood rich in oxygen and nutrients is transported from the placenta to the fetus by the

An enzyme that sperm secrete that is important for penetration of the egg is

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Muscular System

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System

Water, electrolyte, and Acid-Base Balance

Reproductive Systems

Filters