Question 1

When are the three primary germ layers established during pregnancy?

Accepted Answer

A) First week of development 
B) Second week of development 
C) Third week of development 
D) Fourth week of development 
E) Second month of development 
A) First week of development 
B) Second week of development 
C) Third week of development 
D) Fourth week of development 
E) Second month of development

Question 2

Which of the following structures is NOT produced from the mesoderm?

Accepted Answer

A) Melanocytes 
B) All skeletal muscle 
C) All cardiac muscle 
D) Blood vessels 
E) Lymphatic tissue 
A) Melanocytes 
B) All skeletal muscle 
C) All cardiac muscle 
D) Blood vessels 
E) Lymphatic tissue

Question 3

Which of the following is a function of the hormone corticotropin-releasing hormone?

Accepted Answer

A) Maintain endometrium of uterus during pregnancy 
B) Help prepare mammary glands for lactation 
C) Establish the timing of birth 
D) Increase flexibility of the pubic symphysis 
E) All of these are functions of CRH 
A) Maintain endometrium of uterus during pregnancy 
B) Help prepare mammary glands for lactation 
C) Establish the timing of birth 
D) Increase flexibility of the pubic symphysis 
E) All of these are functions of CRH

Question 4

Which one represents the blastocyst stage?

Accepted Answer

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

Question 5

Describe the products of the three primary germ layers.

Accepted Answer

The primary germ layers are the endoderm

Question 6

In a heterozygous individual for a certain trait,the dominant allele gives normal skin pigmentation.What is the masked,recessive trait in this individual?

Accepted Answer

A) Normal vision 
B) Albinism 
C) Normal nervous system 
D) Polydactyly 
E) Cystic fibrosis 
A) Normal vision 
B) Albinism 
C) Normal nervous system 
D) Polydactyly 
E) Cystic fibrosis

Question 7

Which of the following is a principle hormone that releases milk into the mammary ducts?

Accepted Answer

A) Prolactin 
B) PIH 
C) PRH 
D) Oxytocin 
E) GnRH 
A) Prolactin 
B) PIH 
C) PRH 
D) Oxytocin 
E) GnRH

Question 8

Labor cannot take place until all of which hormone's effects are diminished?

Accepted Answer

A) Estrogen 
B) Progesterone 
C) Testosterone 
D) Relaxin 
E) Inhibin 
A) Estrogen 
B) Progesterone 
C) Testosterone 
D) Relaxin 
E) Inhibin

Question 9

Which condition listed is a sex chromosome aneuploidy,caused by the presence of a single X chromosome designated XO?

Accepted Answer

A) Emesis gravidarum 
B) Deformation 
C) Turner's syndrome 
D) Breech presentation 
E) Klinefelter's syndrome 
A) Emesis gravidarum 
B) Deformation 
C) Turner's syndrome 
D) Breech presentation 
E) Klinefelter's syndrome

Question 10

Which of the following structures is(are)produced from the endoderm?

Accepted Answer

A) Adrenal cortex 
B) Gonads 
C) Epithelium of the oral cavity 
D) Epithelial lining of the pharynx 
E) Arachnoid mater 
A) Adrenal cortex 
B) Gonads 
C) Epithelium of the oral cavity 
D) Epithelial lining of the pharynx 
E) Arachnoid mater

Question 11

Which of the terms below includes all structures that develop from a zygote: the embryo,the embryonic placenta and its associated membranes?

Accepted Answer

A) Conceptus 
B) Primordium 
C) Epigenesis 
D) Gestational age 
E) Karyotype 
A) Conceptus 
B) Primordium 
C) Epigenesis 
D) Gestational age 
E) Karyotype

Question 12

Which condition listed is an infectious disease of childbirth resulting from an infection originating in the birth canal and affecting the mother's endometrium?

Accepted Answer

A) Emesis gravidarum 
B) Puerperal fever 
C) Turner's syndrome 
D) Fetal alcohol syndrome 
E) Klinefelter's syndrome 
A) Emesis gravidarum 
B) Puerperal fever 
C) Turner's syndrome 
D) Fetal alcohol syndrome 
E) Klinefelter's syndrome

Question 13

Chromosome #15 is considered

Accepted Answer

A) A sex chromosome 
B) An autosome 
C) The SRY chromosome 
D) A linked gene 
E) A transposon 
A) A sex chromosome 
B) An autosome 
C) The SRY chromosome 
D) A linked gene 
E) A transposon

Question 14

Which of the following is an agent or influence that causes developmental defects in an embryo?

Accepted Answer

A) Carcinogen 
B) Toxin 
C) Nicotine 
D) Radiation 
E) Teratogen 
A) Carcinogen 
B) Toxin 
C) Nicotine 
D) Radiation 
E) Teratogen

Question 15

What connects the umbilical vein to the inferior vena cava in infants?

Accepted Answer

A) Ductus venosus 
B) Ductus arteriosus 
C) Anteriosum 
D) Patent ductus arteriosus 
E) Superior vena cava 
A) Ductus venosus 
B) Ductus arteriosus 
C) Anteriosum 
D) Patent ductus arteriosus 
E) Superior vena cava

Question 16

A Barr body

Accepted Answer

A) Is an inactivated X chromosome 
B) Cannot be stained 
C) Are transcribed and translated 
D) Is seen in males 
E) Is only found in humans 
A) Is an inactivated X chromosome 
B) Cannot be stained 
C) Are transcribed and translated 
D) Is seen in males 
E) Is only found in humans

Question 17

Which of the following are major potential teratogens that affect embryonic development?

Accepted Answer

A) Alcohol 
B) Cigarette smoke 
C) Various prescription drugs 
D) Irradiation 
E) All of these 
A) Alcohol 
B) Cigarette smoke 
C) Various prescription drugs 
D) Irradiation 
E) All of these

Question 18

Red-green color blindness is a recessive,X-linked trait represented as Xc.(Normal color vision is represented as XC. )If a daughter has red-green color blindness,what must the genotypes of her parents be?

Accepted Answer

The daughter can only have red-green col

Question 19

During pregnancy stroke volume can increase by

Accepted Answer

A) 10% 
B) 20% 
C) 30% 
D) 40% 
E) 50% 
A) 10% 
B) 20% 
C) 30% 
D) 40% 
E) 50%

Question 20

Which of the terms below describes the development of an organism from an undifferentiated cell?

Accepted Answer

A) Conceptus 
B) Primordium 
C) Epigenesis 
D) Karyotype 
E) Fertilization age 
A) Conceptus 
B) Primordium 
C) Epigenesis 
D) Karyotype 
E) Fertilization age

Exam 29: Development and Inheritance

When are the three primary germ layers established during pregnancy?

Which of the following structures is NOT produced from the mesoderm?

Which of the following is a function of the hormone corticotropin-releasing hormone?

Which one represents the blastocyst stage?

Describe the products of the three primary germ layers.

In a heterozygous individual for a certain trait,the dominant allele gives normal skin pigmentation.What is the masked,recessive trait in this individual?

Which of the following is a principle hormone that releases milk into the mammary ducts?

Labor cannot take place until all of which hormone's effects are diminished?

Which condition listed is a sex chromosome aneuploidy,caused by the presence of a single X chromosome designated XO?

Which of the following structures is(are)produced from the endoderm?

Which of the terms below includes all structures that develop from a zygote: the embryo,the embryonic placenta and its associated membranes?

Which condition listed is an infectious disease of childbirth resulting from an infection originating in the birth canal and affecting the mother's endometrium?

Chromosome #15 is considered

Which of the following is an agent or influence that causes developmental defects in an embryo?

What connects the umbilical vein to the inferior vena cava in infants?

A Barr body

Which of the following are major potential teratogens that affect embryonic development?

Red-green color blindness is a recessive,X-linked trait represented as Xc.(Normal color vision is represented as XC. )If a daughter has red-green color blindness,what must the genotypes of her parents be?

During pregnancy stroke volume can increase by

Which of the terms below describes the development of an organism from an undifferentiated cell?

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System Unit Ii: Principles of Support and Movement

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System Unit Iii: Control Systems of the Human Body

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor and Integrative Systems

The Special Senses

The Endocrine System Unit Iv: Maintenance of the Human Body

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System, Nonspecific Resistance to Disease, and Immunity

The Respiratory System

The Digestive System

Metabolism

The Urinary System

Fluid, Electrolyte, and Acid-Base Homeostasis Unit V: Continuity

The Reproductive Systems

Filters

Red-green color blindness is a recessive,X-linked trait represented as X^c.(Normal color vision is represented as X^C. )If a daughter has red-green color blindness,what must the genotypes of her parents be?