Question 1

__________ pass(es)from the maternal blood to the fetal blood.Fetal __________ pass(es)the other way.

Accepted Answer

A)  Carbon dioxide and oxygen;wastes 
B)  Carbon dioxide;nutrients 
C)  Wastes;nutrients and oxygen 
D)  Wastes and nutrients;oxygen and carbon dioxide 
E)  Oxygen and nutrients;wastes 
A)  Carbon dioxide and oxygen;wastes 
B)  Carbon dioxide;nutrients 
C)  Wastes;nutrients and oxygen 
D)  Wastes and nutrients;oxygen and carbon dioxide 
E)  Oxygen and nutrients;wastes

Question 2

Which of the following is not a derivative of ectoderm?

Accepted Answer

A)  Salivary glands 
B)  The nervous system 
C)  The epidermis 
D)  Cutaneous glands 
E)  The dermis 
A)  Salivary glands 
B)  The nervous system 
C)  The epidermis 
D)  Cutaneous glands 
E)  The dermis

Question 3

The chorion forms the fetal part of the placenta.

Accepted Answer

A) True 
 B)False

Question 4

Inadequate liver function is the most common reason that premature infants suffer from multiple dysfunctions.

Accepted Answer

A) True 
 B)False

Question 5

During implantation,the embryoblast undergoes gastrulation.

Accepted Answer

A) True 
 B)False

Question 6

Down syndrome (trisomy-21)results from _________.

Accepted Answer

A)  a mutagen 
B)  nondisjunction 
C)  a teratogen 
D)  a sex-linked mutation 
E)  an autosomal recessive allele 
A)  a mutagen 
B)  nondisjunction 
C)  a teratogen 
D)  a sex-linked mutation 
E)  an autosomal recessive allele

Question 7

Which of the following systems shows the least overall senescence?

Accepted Answer

A)  Muscular system 
B)  Endocrine system 
C)  Integumentary system 
D)  Reproductive system 
E)  Urinary system 
A)  Muscular system 
B)  Endocrine system 
C)  Integumentary system 
D)  Reproductive system 
E)  Urinary system

Question 8

Which of the following organ systems faces the greatest physiological challenge in the transitional period after birth?

Accepted Answer

A)  Muscular system 
B)  Integumentary system 
C)  Respiratory system 
D)  Circulatory system 
E)  Nervous system 
A)  Muscular system 
B)  Integumentary system 
C)  Respiratory system 
D)  Circulatory system 
E)  Nervous system

Question 9

The fertilization membrane is the endometrial tissue that receives the conceptus.

Accepted Answer

A) True 
 B)False

Question 10

Regarding fertilization,which of the following events happens first?

Accepted Answer

A)  Formation of a fertilization membrane 
B)  The fast block to polyspermy 
C)  The slow block to polyspermy 
D)  The cortical reaction 
E)  The acrosomal reaction 
A)  Formation of a fertilization membrane 
B)  The fast block to polyspermy 
C)  The slow block to polyspermy 
D)  The cortical reaction 
E)  The acrosomal reaction

Question 11

By the end of 8 weeks,the individual is considered a fetus because __________.

Accepted Answer

A)  all the primary germ layers are formed 
B)  the amniotic cavity has formed 
C)  all of the organ systems are present 
D)  the neural tube and yolk sac have formed 
E)  the mesoderm has formed 
A)  all the primary germ layers are formed 
B)  the amniotic cavity has formed 
C)  all of the organ systems are present 
D)  the neural tube and yolk sac have formed 
E)  the mesoderm has formed

Question 12

The spheroidal stage of early prenatal development with about 16 to 64 cells is called a(n)__________.

Accepted Answer

A)  zygote 
B)  embryo 
C)  blastomere 
D)  morula 
E)  blastocyst 
A)  zygote 
B)  embryo 
C)  blastomere 
D)  morula 
E)  blastocyst

Question 13

Which of the following is not a known benefit of regular exercise?

Accepted Answer

A)  Maintained joint mobility 
B)  Maintained strength 
C)  Decreased incidence of hypertension 
D)  Maintained endurance 
E)  Prolonged life expectancy 
A)  Maintained joint mobility 
B)  Maintained strength 
C)  Decreased incidence of hypertension 
D)  Maintained endurance 
E)  Prolonged life expectancy

Question 14

During birth,an infant is normally stimulated to breathe by __________.

Accepted Answer

A)  CO2 accumulating in the baby's blood 
B)  an increased O2 level in the baby's new environment 
C)  prostaglandins 
D)  surfactant 
E)  being spanked by the doctor 
A)  CO2 accumulating in the baby's blood 
B)  an increased O2 level in the baby's new environment 
C)  prostaglandins 
D)  surfactant 
E)  being spanked by the doctor

Question 15

By the time the conceptus arrives in the uterus,it consists of at least __________ or more cells.

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  16 
E)  32 
A)  2 
B)  4 
C)  8 
D)  16 
E)  32

Question 16

Twins produced when a single egg is fertilized are called __________ twins.Twins produced from two eggs ovulated at the same time are called __________ twins.

Accepted Answer

A)  monozygotic;identical 
B)  dizygotic;nonidentical 
C)  monozygotic;dizygotic 
D)  dizygotic;monozygotic 
E)  nonidentical;identical 
A)  monozygotic;identical 
B)  dizygotic;nonidentical 
C)  monozygotic;dizygotic 
D)  dizygotic;monozygotic 
E)  nonidentical;identical

Question 17

Out of the 300 million ejaculated sperm,only about __________ reach the vicinity of the egg.

Accepted Answer

A)  20 to 30 
B)  200 to 300 
C)  2000 to 3000 
D)  20,000 to 30,000 
E)  half 
A)  20 to 30 
B)  200 to 300 
C)  2000 to 3000 
D)  20,000 to 30,000 
E)  half

Question 18

Which of the following major events of prenatal development happens first?

Accepted Answer

A)  The eyes are fully open 
B)  The body is covered with lanugo 
C)  Bone calcification begins 
D)  The central nervous system begins to form 
E)  Meconium accumulates in the intestines 
A)  The eyes are fully open 
B)  The body is covered with lanugo 
C)  Bone calcification begins 
D)  The central nervous system begins to form 
E)  Meconium accumulates in the intestines

Question 19

Prior to ejaculation,__________ in the plasma membrane of the sperm prevents premature release of __________.

Accepted Answer

A)  cholesterol;acrosomal enzymes 
B)  protein;acrosomal enzymes 
C)  carbohydrates;prostaglandins 
D)  hyaluronic acid;prostaglandins 
E)  acrosin and hyaluronidase;acrosomal enzymes 
A)  cholesterol;acrosomal enzymes 
B)  protein;acrosomal enzymes 
C)  carbohydrates;prostaglandins 
D)  hyaluronic acid;prostaglandins 
E)  acrosin and hyaluronidase;acrosomal enzymes

Question 20

The __________ encloses all the rest of the membranes and the embryo.

Accepted Answer

A)  chorion 
B)  allantois 
C)  yolk sac 
D)  amnion 
E)  zona pellucida 
A)  chorion 
B)  allantois 
C)  yolk sac 
D)  amnion 
E)  zona pellucida

Exam 29: Human Development and Aging

__________ pass(es)from the maternal blood to the fetal blood.Fetal __________ pass(es)the other way.

Which of the following is not a derivative of ectoderm?

The chorion forms the fetal part of the placenta.

Inadequate liver function is the most common reason that premature infants suffer from multiple dysfunctions.

During implantation,the embryoblast undergoes gastrulation.

Down syndrome (trisomy-21)results from _________.

Which of the following systems shows the least overall senescence?

Which of the following organ systems faces the greatest physiological challenge in the transitional period after birth?

The fertilization membrane is the endometrial tissue that receives the conceptus.

Regarding fertilization,which of the following events happens first?

By the end of 8 weeks,the individual is considered a fetus because __________.

The spheroidal stage of early prenatal development with about 16 to 64 cells is called a(n)__________.

Which of the following is not a known benefit of regular exercise?

During birth,an infant is normally stimulated to breathe by __________.

By the time the conceptus arrives in the uterus,it consists of at least __________ or more cells.

Twins produced when a single egg is fertilized are called __________ twins.Twins produced from two eggs ovulated at the same time are called __________ twins.

Out of the 300 million ejaculated sperm,only about __________ reach the vicinity of the egg.

Which of the following major events of prenatal development happens first?

Prior to ejaculation,__________ in the plasma membrane of the sperm prevents premature release of __________.

The __________ encloses all the rest of the membranes and the embryo.

Major Themes of Anatomy and Physiology

The Chemistry of Life

Cellular Form and Function

Genetics of Cellular Function

Histology

The Integumentary System

Bone Tissue

The Skeletal System

Joints

The Muscular System

Muscular Tissue

Nervous Tissue

The Spinal Cord,spinal Nerves,and Somatic Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System and Visceral Reflexes

Sense Organs

The Endocrine System

The Circulatory System: Blood

The Circulatory System: Heart

The Circulatory System: Blood Vessels and Circulation

The Lymphatic and Immune Systems

The Respiratory System

The Urinary System

Fluid, electrolyte, and Acidbase Balance

The Digestive System

Nutrition and Metabolism

The Male Reproductive System

The Female Reproductive System

Atlas a General Orientation to Human Anatomy

Filters

pass(es)from the maternal blood to the fetal blood.Fetal pass(es)the other way.

Twins produced when a single egg is fertilized are called twins.Twins produced from two eggs ovulated at the same time are called twins.

Prior to ejaculation, in the plasma membrane of the sperm prevents premature release of .