Embryology 18
The endoderm gives rise to the:
brain cells
liver cells
kidney cells
cartilage cells
The ectoderm gives rise to the:
brain cells
liver cells
kidney cells
blood cells
Somites may differentiate into all of the following except
bones
dermis of skin
muscles
epidermis of skin
The lateral mesoderm is divided into two layers by the formation of the
intraembryonic coelom
neural tube
notochord
yolk sac
Intermediate mesoderm will give rise to the
neural tube
somites
notochord
kidneys and gonads
All of the following statements concerning the notochord are true except
it induces overlying ectoderm to form the neural plate
it induces the formation of vertebral bodies
it forms the nucleus pulposus
it forms the neural tube
In the human embryo, hematopoiesis first occurs within the
liver
bone marrow
spleen
yolk sac
The notochord induces the overlying ectoderm to develop into the
skin
eye
muscles
neural plate
The blastula develops into the:
gastrula
morula
endoderm
zygote
Tissue differentiation begins at which stage?
zygote
morula
blastula
gastrula
The nervous system develops from?
ectoderm
mesoderm
endoderm
trophoblast
Blastopore is
opening of neural tube
opening of gastrocoel
found in blastula
future anterior end of an embruo
What is true about cleavage in human embryo?
meroblastic
starts in fallopian tube
starts when egg reaches the uterus
is identical to meiosis
Coelom is formed by splitting of
ectoderm
endoderm
mesoderm
all of the above
Identical twins result from
one egg and one sperm
one egg and two sperms
two eggs and one sperm
two eggs and two sperms
Eye lens is formed from
ectoderm
mesoderm
endoderm
endoderm and mesoderm
Which of the following is not a fetal membrane?
amnion
chorion
yolk sac
allantois
Prenatal diagnosis techniques is
amniocentesis
chordocentesis
chorionic villi sampling
all of the above