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Embryology
From MCQ Book - PMU
50
Medical
Undergraduate 1
01/21/2015

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Cards

Term
Y/N
Fertilization ability of the spermatozoon is preserved for 24-30 hours
Definition
Yes
Term
Y/N
Two veins and one artery are present in the umbilical cord of the newborn baby.
Definition
No
Two Arteries + One Vein
Term
Y/N
The yolk sack (Sacculus Vitellinus) takes part in the formation of the embryo discus.
Definition
Yes
Term
Y/N
Amnion is not involved in the formation of the embryo discus.
Definition
No
Embryo discus derived from the epiblast layer (derived from the inner cell mass)
Term
Y/N
The cells obtained as a result of segmentation are called Blastomers.
Definition
No
Term
Y/N
The Trophoblast related structures are associated with the implantation and nutrition of the embryo.
Definition
Yes
Term
Y/N
The smooth Chorion(Chorion Laeve) takes part in the formation of the fetal sack.
Definition
Yes
Term
Y/N
The embryoblast cells situated on the floor of the amnion differentiate in the ectoderma.
Definition
Yes
Term
Y/N
The Chorion frondosum participates in the formation of the placenta.
Definition
Yes
Term
Y/N
Linea Primitiva (the primitive line) is a temporary structure related to the organization of the mesoderma.
Definition
Yes
Term
MCQ - 1A
The sperm volume normally is:
A/2-6 ml
B/6-8ml
C/8-10ml
D/10-12ml
Definition
A - 2-6 ml
Term
MCQ - 1A
The II type oocyte has a ferilization ability during:
A/6-12 Hours
B/12-24 Hours
C/24-36 Hours
D/36-72 Hours
Definition
A - 6-12 Hours
Term
MCQ - 1A
The spermatozoa number in 1cm3 sperm is:
A/10-30 x10(6)/ cm3
B/400-500 x 10(2) / cm3
C/40-120 x 10(6) / cm3
D/130-160 x 10(6) / cm3
Definition
C - 40-120 x 10(6) / cm3
Term
MCQ - 1A
The minimum part of mobile spermatozoa in the sperm necessary for fertilization is above:
A/10%
B/20%
C/30%
D/50%
Definition
D - 50%
Term
MCQ - 1A
The process of transformation of spermatids into spermatozoa is called:
A/Spermation
B/Spermiogensis
C/Capacitation
D/Acrosomal Reaction
Definition
B - Spermiogensis
Term
MCQ - 1A
The Trophoblast is part of:
A/Embryoblast
B/Blastocysta
C/Magma Reticularis
D/Amnion Cavity
Definition
B - Blastocysta
Term
MCQ - 1A
The consecutive stages in the embryogenesis are:
A/Morulla-Blastocysta-Organogenesis-Gastrulation
B/Morulla-Blastocysta-Gastrulation-Organogenesis
C/Blastocysta-Morulla-Gastrulation-Organogenesis
D/Organogenesis-Morulla-Gastrulation-Blastocysta
Definition
B - Morulla-Blastocysta-Gastrulation-Organogenesis
Term
MCQ - 1A
The Somites derive from:
A/Mesoblast
B/Endoblast
C/Ectoblast
D/Mesenchyme
Definition
A - Mesoblast
Term
MCQ - 1A
The dermatomes form:
A/Skin Epithelium
B/Skin Connective Tissue
C/Skeletal Muscles
D/Embryo's Skeleton
Definition
B - Skin Connective Tissue
Term
MCQ - 1A
The segmentation by human embryo is:
A/The formation of many small holes in the acrosome
B/penetration of spermatozoon through corona radiata of the oocyte
C/penetration of spermatozoon through zona pellucida of the oocyte
D/series of mitosis in the zygote during its movement through the oviduct
Definition
D - series of mitosis in the zygote during its movement through the oviduct
Term
MCQ - 1A
Which element is not included in the placental barrier:
A/Cytotrophoblast
B/Syncytial Trophoblast
C/Capillaries of the Placental Villae
D/Capillaries of the Uterus Wall
Definition
D - Capillaries of the Uterus Wall
Term
MCQ - 1A
The implantation starts:
A/On the first day after the fertilization
B/6-7 days after the fertilization
C/10 days after the fertilization
D/15 days after the fertilization
Definition
B - 6-7 days after the fertilization
Term
MCQ - 1A
The fertilization is completed in:
A/Uterus Cavity
B/Oviduct Cavity
C/Abdomen
D/Ovary
Definition
B - Oviduct Cavity
Term
MCQ - 1A
What type of function is the oocyte cortical reaction:
A/Trophic
B/Receptor
C/Barrier
D/Phagecytic
Definition
C - Barrier
Term
MCQ - 1A
The umbilical cord of the newborn baby consists of:
A/2 Arteries and 2 Veins
B/2 Arteries and 1 Vein
C/2 Veins and 1 Artery
D/1 Artery and 1 Vein
Definition
B/2 Arteries and 1 Vein
Term
MCQ - More than one Answer
Which of the following is typical for monozygotic twins:
A/They dont look alike
B/They look alike
C/They can be of a different gender
D/They are always the same gender
E/There are no differences in their immunological characteristics
Definition
B/They look alike
D/They are always the same gender
E/There are no differences in their immunological characteristics
Term
MCQ - More than one Answer
The somites (epimer of the mesoblast)form:
A/Dermatomes
B/Sklerotomes
C/Myotomes
D/Nephrotomes
E/Hypomer
Definition
A/Dermatomes
B/Sklerotomes
C/Myotomes
Term
MCQ - More than one Answer
From the Mesenchyme derivates:
A/Cardiac Muscle Tissue
B/Smooth Muscle Tissue
C/Skeletal Muscle Tissue
D/Blood Tissue
E/Microglia
Definition
B/Smooth Muscle Tissue
D/Blood Tissue
E/Microglia
Term
MCQ - More than one Answer
From the ectoblast derivates:
A/Nevrous tissue
B/Blood tissue
C/Skin epithelium (Epidermis)
D/Epithelium of the oral cavity
E/Smooth Muscle Tissue
Definition
A/Nevrous tissue
C/Skin epithelium (Epidermis)
D/Epithelium of the oral cavity
Term
MCQ - More than one Answer
The fetal sack wall consists of:
A/Amnion
B/Smooth Chorion (Chorion Laeve)
C/Placental Villae
D/Covering Decidua (Decidua Capsularis)
E/Basal Decidua (Deciduas Basalis)
Definition
A/Amnion
B/Smooth Chorion (Chorion Laeve)
D/Covering Decidua (Decidua Capsularis)
Term
MCQ - More than one Answer
The placental barrier after the third month of embryogenesis consists of:
A/syncytial trophoblast
B/cytotrophoblast
C/epithelium of the placental capillaries
D/mesenchyme of the placental villa
E/epithelium of the uterus capillaries
Definition
A/syncytial trophoblast
C/epithelium of the placental capillaries
D/mesenchyme of the placental villa
Term
MCQ - More than one Answer
The maternal part of the placenta consists of:
A/Cotyledones
B/Loose connective tissue slips (septae)
C/Blood Lacunae
D/Amion
E/Chorionic Plate
Definition
A/Cotyledones
B/Loose connective tissue slips (septae)
C/Blood Lacunae
Term
MCQ - More than one Answer
The fetal part of the placenta consists of:
A/Loose connective tissue slips (septae)
B/Blood Lacunae
C/Chorion frondosum
D/Amion
E/Cotyledones
Definition
B/Blood Lacunae
D/Amion
Term
MCQ - More than one Answer
Which of the following are specific for the acrosomal reaction:
A/Releasing of the acrosomal enzymes
B/Facilities the penetration of spermatozoon through zona pellucida of the oocyte
C/type of endocytosis
D/completed after the spermatozoon receptor binding to zona pellucida
E/Completed after the fertilization
Definition
A/Releasing of the acrosomal enzymes
B/Facilities the penetration of spermatozoon through zona pellucida of the oocyte
D/completed after the spermatozoon receptor binding to zona pellucida
E/Completed after the fertilization
Term
MCQ - More than one Answer
Which of the following are specific for the cortical reaction is:
A/Completed in corona radiata
B/Associated with releasing of the acrosomal enzymes
C/associated with releasing of the proteolytic enzymes under the oocyte plasmalemma
D/associated with destroying of the spermatozoon receptors in zona pellucida
E/blocks the passing of more than one spermatozoon into the oocyte
Definition
C/associated with releasing of the proteolytic enzymes under the oocyte plasmalemma
D/associated with destroying of the spermatozoon receptors in zona pellucida
E/blocks the passing of more than one spermatozoon into the oocyte
Term
Define and Fill in Correct Answers:
The parts of the mesoblast are:
A/
B/
C/
Definition
A/Epimer
B/Mesomer
C/Hypomer
Term
Define and Fill in Correct Answers:
What are the structures that derive from the somites of the mesoblast:
A/
B/
C/
Definition
A/Dermatomes
B/Sclerotomes
C/Myotomes
Term
Define and Fill in Correct Answers:
The placental barrier after the third month consists of:
A/
B/
C/
Definition
A/Syncytial Trophoblast
B/Mesenchyme of the Placental villa
C/Epithelium of the placental capillaries
Term
Define and Fill in Correct Answers:
The placental barrier before the third month consists of:
A/
B/
C/
D/
Definition
A/Cytotrophoblast
B/Syncytial Trophoblast
C/Mesenchyme of the Placental villa
D/Epithelium of the placental capillaries
Term
Define and Fill in Correct Answers:
Specific for segmentation by the human embryo is:
A/
B/
C/
Definition
A/Totally
B/Asynchronous
C/Unequal
Term
Define and Fill in Correct Answers:
The formation of the chorda dorsalis passes through the following stages:
A/
B/
C/
Definition
A/Chordal Channel
B/Chordal Plate
C/Definitive Chorda
Term
Define and Fill in Correct Answers:
The umbilical cord of the newborn baby is built from:
A/
B/
C/
Definition
A/Two arteries and one vein
B/Mucoid tissue
C/Amnion
Term
Define and Fill in Correct Answers:
Chorion types
A/
B/
Definition
A/Chorion Laeve
B/Chorion Frondosum
Term
Define and Fill in Correct Answers:
Trophoblast types:
A/
B/
Definition
A/Cytotrophoblast
B/Syncytial Trophoblast
Term
Define and Fill in Correct Answers:
The process of the formation of the nervous system passes through the following stages:
A/
B/
C/
Definition
A/Neural Plate
B/Neural Groove
C/Neural Tube
Term
Give the Correct Answer (Match)
Determine the Localization of the structure according to its stage of development:
A/Zygote
B/Blastocysta
C/Blastocysta (day 9)

a/Free in the uterus
b/In the Oviduct
C/In the Endomethrium
Definition
A/Zygote - b/In the Oviduct
B/Blastocysta - a/Free in the uterus
C/Blastocysta (day 9) - C/In the Endomethrium
Term
Give the Correct Answer (Match)
Associate the parts of the mesoblast with the corresponding derivates:
A/Epimer
B/Mesomer
C/Hypomer

a/Dermatomes
b/Splanchnopleura
c/Sklerotomes
d/Myotomes
e/Nephrotomes
f/Somatopleura
Definition
A/Epimer -
a/Dermatomes, c/Sklerotomes , d/Myotomes

B/Mesomer -
f/Somatopleura

C/Hypomer -
b/Splanchnopleura, e/Nephrotomes
Term
Identify the Organ;
Under the light microscope (HE Staining), part of the extraembryonal organ that consists of amion, smooth chorion (chorion laeve) and covering devidua (decidua capsularis) appears.
Definition
Fetal Sacks
Term
Identify the Organ;
Under the light microscope (HE Staining), part of extraembryonal organ consisting of different in shape and size structures that are covered by syncytiotrophoblast, filled with mesenchyme and blood vessels appear.
Definition
Placental Villae (Placenta)
Term
Identify the Organ;
Under the light microscope (HE Staining), part of extraembryonal organ that is covered by amnion and contains three blood vessels and mucoid tissue between them appears.
Definition
Umbilical Cord (after the III-rd month)
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