Embryology flashcards


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The division of cells in a zygote is called? A Cleavage
The solid mass of cells that results from cleavage of the zygote is the morula
Male and female fetuses can first be distinguished by their genitalia at 3 months
Chemical, physical, or biological agents that can induce birth defects are called teratogens
Fertilization is to zygote as cleavage is to _____ Morula
Implantation of the blastocyst on the uterine lining takes about 1 week
What is the correct sequence for embryonic development is zygote, morula, blastocyst
The hand develops with ________ between the fingers webbing
_______ is a clinical procedure that provides a genetic profile for a fetus Amniocentesis
A ________ abortion is one in which the fetus dies and is naturally aborted spontaneous
Name three primary germ layers in the embryo endoderm, ectoderm, and mesoderm
The ________ is the embryonic stage that implants in the uterus blastocyst
_____ develops into the lining of the gastrointestinal tract endoderm
The epiblast develops a primitive streak during days 14-15, the initial cells that ingress through the primitive streak become this germ layer endoderm
Mucus-producing glands of the respiratory tract arise from this layer endoderm
The ectoderm develops into the epithelium of the skin, whereas this layer gives rise to the epithelial lining of the gut tube. endoderm
The splanchnic mesoderm forms next to this layer endoderm
The urinary bladder is derived from which embryonic layer endoderm
The wall and lining of the gut develop from the mesoderm and ________ endoderm
______ develops into the brain and spinal cord ectoderm
______ develops into the epidermis of the skin ectoderm
What embryonic epiblast cells that remain on the surface of the trilaminar disc are ultimately called ectoderm
The neural tube develops from this layer ectoderm
Neural crest cells are derived from this germ layer ectoderm
The mesoderm located deep to the neural tube forms the kidneys and the gonads is the ________ intermediate mesoderm
The ribs and vertebrae form from this primary germ layer? mesoderm—somites
This layer will give rise to the bones ligaments and joints of the embryonic limbs mesoderm
The dermis of the dorsal body region is derived from somites. However, the dermis of the ventral body region is derived from mesoderm—lateral plate.
Blood vessels and the heart arise from this primary germ layer mesoderm—lateral plate
The middlemost embryonic germ layer to develop is mesoderm
Gonads arise from what embryonic structure? intermediate mesoderm
Splanchnic mesoderm forms the ______ heart
Mesenchyme would refer to ________ but not ________ mesoderm; ectoderm
The primary germ layer that ultimately forms the serous membranes of the peritoneum is mesoderm
The cavity in the mesoderm that ultimately develops into the peritoneal, pericardial, and pleural cavities is called coelom
Splanchnic mesoderm gives rise to components of the cardiovascular system include the heart and blood vessels
By the end of week 3, the mesoderm has divided into the somites, intermediate mesoderm, and ________ lateral plate
The intermediate mesoderm forms the ______ Kidneys and gonads
The body's axis of development is determined by the notochord
A primitive characteristic that an adult human retains only in part, but is important in determining bilateral symmetry is the ______ notochord
What is the proper sequence for neurulation? neural plate, neural groove, neural tube
A transverse section through the 24-day embryo, dorsal to ventral, would first contact the neural tube
The neural tube of the embryo develops into the neural tube
The embryonic layer that invades the lining of the uterus and forms the placenta is the trophoblast
Somites differentiate into dermatomes, myotomes, and ________ sclerotomes

The division of cells in a zygote is called?

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

Male and female fetuses can first be distinguished by their genitalia at

Chemical, physical, or biological agents that can induce birth defects are called

Fertilization is to zygote as cleavage is to _____

Implantation of the blastocyst on the uterine lining takes about

What is the correct sequence for embryonic development is

The hand develops with ________ between the fingers

_______ is a clinical procedure that provides a genetic profile for a fetus

A ________ abortion is one in which the fetus dies and is naturally aborted

Name three primary germ layers in the embryo

The ________ is the embryonic stage that implants in the uterus

_____ develops into the lining of the gastrointestinal tract

The epiblast develops a primitive streak during days 14-15, the initial cells that ingress through the primitive streak become this germ layer

Mucus-producing glands of the respiratory tract arise from this layer

The ectoderm develops into the epithelium of the skin, whereas this layer gives rise to the epithelial lining of the gut tube.

The splanchnic mesoderm forms next to this layer

The urinary bladder is derived from which embryonic layer

The wall and lining of the gut develop from the mesoderm and ________

______ develops into the brain and spinal cord

______ develops into the epidermis of the skin

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

The neural tube develops from this layer

Neural crest cells are derived from this germ layer

The mesoderm located deep to the neural tube forms the kidneys and the gonads is the ________

The ribs and vertebrae form from this primary germ layer?

This layer will give rise to the bones ligaments and joints of the embryonic limbs

The dermis of the dorsal body region is derived from somites. However, the dermis of the ventral body region is derived from

Blood vessels and the heart arise from this primary germ layer

The middlemost embryonic germ layer to develop is

Gonads arise from what embryonic structure?

Splanchnic mesoderm forms the ______

Mesenchyme would refer to ________ but not ________

The primary germ layer that ultimately forms the serous membranes of the peritoneum is

The cavity in the mesoderm that ultimately develops into the peritoneal, pericardial, and pleural cavities is called

Splanchnic mesoderm gives rise to components of the cardiovascular system include

By the end of week 3, the mesoderm has divided into the somites, intermediate mesoderm, and ________

The intermediate mesoderm forms the ______

The body's axis of development is determined by the

A primitive characteristic that an adult human retains only in part, but is important in determining bilateral symmetry is the ______

What is the proper sequence for neurulation?

A transverse section through the 24-day embryo, dorsal to ventral, would first contact the

The neural tube of the embryo develops into the

The embryonic layer that invades the lining of the uterus and forms the placenta is the

Somites differentiate into dermatomes, myotomes, and ________

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