Question 1

Use the diagram above to answer the following questions.
-Which letter indicates the oocyte?

Accepted Answer

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

Question 2

The ribs and vertebrae form from this primary germ layer.

Accepted Answer

A)  endoderm 
B)  ectoderm 
C)  mesoderm-somites 
D)  mesoderm-lateral plate 
E)  intermediate mesoderm 
A)  endoderm 
B)  ectoderm 
C)  mesoderm-somites 
D)  mesoderm-lateral plate 
E)  intermediate mesoderm C

Question 3

Which of the following is not a property of mesenchyme?

Accepted Answer

A)  It is present before birth. 
B)  Its cells migrate. 
C)  Its cells are star-shaped. 
D)  Its cells attach closely to one another and form sheets. 
A)  It is present before birth. 
B)  Its cells migrate. 
C)  Its cells are star-shaped. 
D)  Its cells attach closely to one another and form sheets. D

Question 4

It is easy to remember that in humans, 3 weeks after fertilization, there are three germ layers.

Accepted Answer

A) True 
 B)False

Question 5

Briefly describe the formation of the nervous system.

Accepted Answer

The nervous system develops by an infold

Question 6

Splanchnic mesoderm forms the

Accepted Answer

A)  heart. 
B)  notochord. 
C)  brain. 
D)  skin. 
A)  heart. 
B)  notochord. 
C)  brain. 
D)  skin.

Question 7

Embryonic epiblast cells that remain on the surface of the trilaminar disc are ultimately called

Accepted Answer

A)  endoderm 
B)  ectoderm 
C)  mesoderm-somites 
D)  mesoderm-lateral plate 
E)  intermediate mesoderm 
A)  endoderm 
B)  ectoderm 
C)  mesoderm-somites 
D)  mesoderm-lateral plate 
E)  intermediate mesoderm

Question 8

Use the diagram above to answer the following questions.
-Which letter indicates the blastocyst?

Accepted Answer

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

Question 9

Thalidomide, once used to alleviate morning sickness in pregnant women, resulted in

Accepted Answer

A)  severe limb abnormalities. 
B)  heart defects. 
C)  mental retardation. 
D)  multiple births. 
A)  severe limb abnormalities. 
B)  heart defects. 
C)  mental retardation. 
D)  multiple births.

Question 10

________ is a clinical procedure that provides a genetic profile for a fetus.

Accepted Answer

The answer of ________ is a clinical procedure that provides...

Question 11

The solid mass of cells that results from cleavage of the zygote is the

Accepted Answer

A)  trophoblast. 
B)  blastocyst. 
C)  morula. 
D)  gastrula. 
A)  trophoblast. 
B)  blastocyst. 
C)  morula. 
D)  gastrula.

Question 12

The ability of one group of cells to influence development of neighboring cells is called gastrulation.

Accepted Answer

A) True 
 B)False

Question 13

As a result of folding, the embryo acquires a tadpole shape by

Accepted Answer

A)  day 9. 
B)  day 12. 
C)  day 15. 
D)  day 24. 
A)  day 9. 
B)  day 12. 
C)  day 15. 
D)  day 24.

Question 14

The ability of one cell to influence the development of its neighboring cells is called

Accepted Answer

A)  blastulation. 
B)  cleavage. 
C)  gastrulation. 
D)  induction. 
A)  blastulation. 
B)  cleavage. 
C)  gastrulation. 
D)  induction.

Question 15

The three primary germ layers are the endoderm, myotome, and exoderm.

Accepted Answer

A) True 
 B)False

Question 16

Use the diagram above to answer the following questions.
-Which letter indicates the uterus?

Accepted Answer

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

Question 17

Endoderm forms many glands, such as those associated with the gastrointestinal tract.

Accepted Answer

A) True 
 B)False

Question 18

Production of surfactant begins during week 22-26 of gestation. Premature infants born after week 26

Accepted Answer

A)  will not survive. 
B)  will not need medical assistance for breathing. 
C)  will need medical assistance for breathing. 
D)  will be at increased risk for visual disorders and mental impairment. 
A)  will not survive. 
B)  will not need medical assistance for breathing. 
C)  will need medical assistance for breathing. 
D)  will be at increased risk for visual disorders and mental impairment.

Question 19

The yolk sac, formed from the hypoblast, has little yolk in the human embryo.

Accepted Answer

A) True 
 B)False

Question 20

The correct sequence for embryonic development is

Accepted Answer

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

Exam 3: Basic Embryology

Use the diagram above to answer the following questions. -Which letter indicates the oocyte?

The ribs and vertebrae form from this primary germ layer.

Which of the following is not a property of mesenchyme?

It is easy to remember that in humans, 3 weeks after fertilization, there are three germ layers.

Briefly describe the formation of the nervous system.

Splanchnic mesoderm forms the

Embryonic epiblast cells that remain on the surface of the trilaminar disc are ultimately called

Use the diagram above to answer the following questions. -Which letter indicates the blastocyst?

Thalidomide, once used to alleviate morning sickness in pregnant women, resulted in

________ is a clinical procedure that provides a genetic profile for a fetus.

The solid mass of cells that results from cleavage of the zygote is the

The ability of one group of cells to influence development of neighboring cells is called gastrulation.

As a result of folding, the embryo acquires a tadpole shape by

The ability of one cell to influence the development of its neighboring cells is called

The three primary germ layers are the endoderm, myotome, and exoderm.

Use the diagram above to answer the following questions. -Which letter indicates the uterus?

Endoderm forms many glands, such as those associated with the gastrointestinal tract.

Production of surfactant begins during week 22-26 of gestation. Premature infants born after week 26

The yolk sac, formed from the hypoblast, has little yolk in the human embryo.

The correct sequence for embryonic development is

The Human Body: an Orientation

Cells: the Living Units

Tissues

The Integumentary System

Bones and Skeletal Tissues

Bones, Part 1: the Axial Skeleton

Bones, Part 2: the Appendicular Skeleton

Joints

Skeletal Muscle Tissue

Muscles of the Body

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System

The Autonomic Nervous System and Visceral Sensory Neurons

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels

The Lymphatic and Immune Systems

The Respiratory System

The Digestive System

The Urinary System

The Reproductive System

Filters