Question 1

In some neonates, the foramen ovale does not close to form the fossa ovalis. This would be called a/an ________.

Accepted Answer

A)  mutation 
B)  congenital disorder 
C)  teratogen 
D)  genetic anomaly 
A)  mutation 
B)  congenital disorder 
C)  teratogen 
D)  genetic anomaly

Question 2

Which of the following statements concerning the embryonic cardiovascular system is true?

Accepted Answer

A)  The heart develops from four endothelial tubes. 
B)  Blood vessels form from blood islands. 
C)  An opening in the interatrial septum is called the sinus venosus. 
D)  The bulbus cordis becomes the sinoatrial node (the adult pacemaker). 
E)  There is an opening in the interventricular septum. 
A)  The heart develops from four endothelial tubes. 
B)  Blood vessels form from blood islands. 
C)  An opening in the interatrial septum is called the sinus venosus. 
D)  The bulbus cordis becomes the sinoatrial node (the adult pacemaker). 
E)  There is an opening in the interventricular septum.

Question 3

The allantois enlarges to form the ________.

Accepted Answer

A)  kidney 
B)  gonads 
C)  ureter 
D)  urinary bladder 
E)  urethra 
A)  kidney 
B)  gonads 
C)  ureter 
D)  urinary bladder 
E)  urethra

Question 4

Which germ layer is the thymus derived from?

Accepted Answer

A)  Ectoderm 
B)  Mesoderm 
C)  Endoderm 
A)  Ectoderm 
B)  Mesoderm 
C)  Endoderm

Question 5

Which of the following sequences is correct?

Accepted Answer

A)  Mesonephros, pronephros, metanephros 
B)  Metanephros, pronephros, mesonephros 
C)  Pronephros, mesonephros, metanephros 
D)  Pronephros, metanephros, mesonephros 
E)  Mesonephros, metanephros, pronephros 
A)  Mesonephros, pronephros, metanephros 
B)  Metanephros, pronephros, mesonephros 
C)  Pronephros, mesonephros, metanephros 
D)  Pronephros, metanephros, mesonephros 
E)  Mesonephros, metanephros, pronephros

Question 6

Type AB of the ABO blood group is an example of ________.

Accepted Answer

A)  complete dominance 
B)  codominance 
C)  incomplete dominance 
D)  recessiveness 
E)  polymorphism 
A)  complete dominance 
B)  codominance 
C)  incomplete dominance 
D)  recessiveness 
E)  polymorphism

Question 7

Which of the following statements concerning musculoskeletal system development is true?

Accepted Answer

A)  Skeletal muscles develop from crest cells. 
B)  Myoblasts produce somites. 
C)  The vertebral column develops from somite-derived mesoderm. 
D)  Enlargement of muscles after birth is due to an increase in the number of muscle fibers. 
E)  Ossification ends before birth. 
A)  Skeletal muscles develop from crest cells. 
B)  Myoblasts produce somites. 
C)  The vertebral column develops from somite-derived mesoderm. 
D)  Enlargement of muscles after birth is due to an increase in the number of muscle fibers. 
E)  Ossification ends before birth.

Question 8

Older people may require lower drug doses than younger people because ________.

Accepted Answer

A)  their organs are more sensitive to drugs 
B)  they have lower rates of renal clearance 
C)  they do not absorb as much drug from the small intestine 
D)  there is less tissue mass to treat 
E)  a lifetime of mutations results in unpredictable drug reactions 
A)  their organs are more sensitive to drugs 
B)  they have lower rates of renal clearance 
C)  they do not absorb as much drug from the small intestine 
D)  there is less tissue mass to treat 
E)  a lifetime of mutations results in unpredictable drug reactions

Question 9

Sally was a nice pink color when she was born. Her heart rate was high and her breathing was steady. However, she did not respond to plantar stimulation, though she did have some muscle movement. Her APGAR score would be ________.

Accepted Answer

A)  7 
B)  6 
C)  5 
D)  4 
A)  7 
B)  6 
C)  5 
D)  4

Question 10

Premature aging is called ________.

Accepted Answer

A)  progeria 
B)  lactation 
C)  parturition 
D)  Alzheimer disease 
E)  dementia 
A)  progeria 
B)  lactation 
C)  parturition 
D)  Alzheimer disease 
E)  dementia

Question 11

Which structure(s) form(s) the roof of the mouth?

Accepted Answer

A)  Mesonephros 
B)  Mandibular processes 
C)  Neural tube 
D)  Secondary palate 
E)  Somites 
A)  Mesonephros 
B)  Mandibular processes 
C)  Neural tube 
D)  Secondary palate 
E)  Somites

Question 12

The placenta and membranes surrounding the embryo develop from the ________.

Accepted Answer

A)  morula 
B)  blastocyst 
C)  trophoblast 
D)  inner cell mass 
E)  blastocele 
A)  morula 
B)  blastocyst 
C)  trophoblast 
D)  inner cell mass 
E)  blastocele

Question 13

A patient's karyotype indicates a chromosome number of 45. This result is best explained by

Accepted Answer

A)  nondisjunction in either the sperm cell or oocyte. 
B)  nondisjunction in both the sperm cell and oocyte. 
C)  fertilization of a single oocyte by two sperm cells. 
D)  a point mutation that caused one or more chromosomes to fuse. 
A)  nondisjunction in either the sperm cell or oocyte. 
B)  nondisjunction in both the sperm cell and oocyte. 
C)  fertilization of a single oocyte by two sperm cells. 
D)  a point mutation that caused one or more chromosomes to fuse.

Question 14

Alcohol ingestion by a pregnant woman can cause birth defects in her baby; in this respect, alcohol is a/an ________.

Accepted Answer

A)  carcinogen 
B)  mutagen 
C)  teratogen 
D)  oncogene 
E)  haptogen 
A)  carcinogen 
B)  mutagen 
C)  teratogen 
D)  oncogene 
E)  haptogen

Question 15

The onset of puberty is signaled by

Accepted Answer

A)  a growth spurt. 
B)  emotional upheaval. 
C)  attainment of full adult stature. 
D)  the ability to obtain a drivers license. 
E)  a halt to growth. 
A)  a growth spurt. 
B)  emotional upheaval. 
C)  attainment of full adult stature. 
D)  the ability to obtain a drivers license. 
E)  a halt to growth.

Question 16

If the zygote splits into two separate cells, ________.

Accepted Answer

A)  identical twins result 
B)  fraternal twins result 
C)  dizygotic twinning occurs 
D)  both cells die 
E)  paternal twins result 
A)  identical twins result 
B)  fraternal twins result 
C)  dizygotic twinning occurs 
D)  both cells die 
E)  paternal twins result

Question 17

An embryonic cell that contains the potential to give rise to any tissue type is called a/an ________ cell.

Accepted Answer

A)  differentiated 
B)  multipotent 
C)  pluripotent 
D)  omnipotent 
E)  totipotent 
A)  differentiated 
B)  multipotent 
C)  pluripotent 
D)  omnipotent 
E)  totipotent

Question 18

Developmental events are calculated from

Accepted Answer

A)  ovulation. 
B)  conception. 
C)  the last menstrual period. 
D)  fourteen days after the last menstrual period. 
E)  fourteen days before the last menstrual period. 
A)  ovulation. 
B)  conception. 
C)  the last menstrual period. 
D)  fourteen days after the last menstrual period. 
E)  fourteen days before the last menstrual period.

Question 19

The opening that connects the right and left atria in the fetal heart is the ________.

Accepted Answer

A)  interatrial septum 
B)  septum primum 
C)  septum secundum 
D)  foramen ovale 
E)  foramen rotundum 
A)  interatrial septum 
B)  septum primum 
C)  septum secundum 
D)  foramen ovale 
E)  foramen rotundum

Question 20

The embryonic heart

Accepted Answer

A)  develops from two endothelial tubes that fuse together. 
B)  consists of four chambers. 
C)  has two atria but only one ventricle. 
D)  doesn't beat until just prior to birth. 
E)  has no passages connecting right side to left side. 
A)  develops from two endothelial tubes that fuse together. 
B)  consists of four chambers. 
C)  has two atria but only one ventricle. 
D)  doesn't beat until just prior to birth. 
E)  has no passages connecting right side to left side.

Exam 29: Development, Growth, Aging, and Genetics

In some neonates, the foramen ovale does not close to form the fossa ovalis. This would be called a/an ________.

Which of the following statements concerning the embryonic cardiovascular system is true?

The allantois enlarges to form the ________.

Which germ layer is the thymus derived from?

Which of the following sequences is correct?

Type AB of the ABO blood group is an example of ________.

Which of the following statements concerning musculoskeletal system development is true?

Older people may require lower drug doses than younger people because ________.

Sally was a nice pink color when she was born. Her heart rate was high and her breathing was steady. However, she did not respond to plantar stimulation, though she did have some muscle movement. Her APGAR score would be ________.

Premature aging is called ________.

Which structure(s) form(s) the roof of the mouth?

The placenta and membranes surrounding the embryo develop from the ________.

A patient's karyotype indicates a chromosome number of 45. This result is best explained by

Alcohol ingestion by a pregnant woman can cause birth defects in her baby; in this respect, alcohol is a/an ________.

The onset of puberty is signaled by

If the zygote splits into two separate cells, ________.

An embryonic cell that contains the potential to give rise to any tissue type is called a/an ________ cell.

Developmental events are calculated from

The opening that connects the right and left atria in the fetal heart is the ________.

The embryonic heart

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive System

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