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CHE - Embryology

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CHE - Embryology
Sole C
Quiz by Sole C, updated more than 1 year ago
Sole C
Created by Sole C over 9 years ago
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Resource summary

Question 1

Question
Fertilization ability of the spermatozoon is preserved for 24 - 30 hours.
Answer
  • True
  • False

Question 2

Question
Two veins and one artery are present in the umbilical cord of the newborn body.
Answer
  • True
  • False

Question 3

Question
The yolk sack (sacculus vitellinus) takes part in the formation of the embryo discus.
Answer
  • True
  • False

Question 4

Question
Amnion is not involved in the formation of the embryo discus.
Answer
  • True
  • False

Question 5

Question
The cells obtained as a result of segmentation are called blastomers.
Answer
  • True
  • False

Question 6

Question
The trophoblast related structures are associated with the implantation and nutrition of the embryo.
Answer
  • True
  • False

Question 7

Question
The smooth chorion (chorion laeve) takes part in the formation of the fetal sack.
Answer
  • True
  • False

Question 8

Question
The embryoblast cells situated on the floor of the amnion differentiate into the ectoderma.
Answer
  • True
  • False

Question 9

Question
The chorion frondosum participates in the formation of placenta.
Answer
  • True
  • False

Question 10

Question
Linea primitiva (the primitive line) is a temporary structures related to the organization of the mesoderma.
Answer
  • True
  • False

Question 11

Question
The sperm volume is normally is:
Answer
  • 2 - 6 ml
  • 6 - 8 ml
  • 8 - 10 ml
  • 10 - 12 ml

Question 12

Question
The II type oocyte has a fertilization ability during:
Answer
  • 6-12 hours
  • 12 - 24 hours
  • 24 - 36 hours
  • 36 - 72 hours

Question 13

Question
The spermatozoa number in 1cm3 sperm is:
Answer
  • 10 - 30 x10(6) / cm3
  • 400 - 500 x10(2) / cm3
  • 40 - 120 x10(6) / cm3
  • 130 - 160 x10(6) / cm3

Question 14

Question
The minimum part of mobiles spermatozoa in the sperm necessary for fertilization is above:
Answer
  • 10%
  • 20%
  • 30%
  • 50%

Question 15

Question
The process of transformation of spermatids into spermatozoa is called:
Answer
  • Spermation
  • Spermiogenesis
  • Capacitation
  • Acrosomal reaction

Question 16

Question
The trophoblast is part of:
Answer
  • Embryoblast
  • Blastocysta
  • Magma reticularis
  • Amnion cavity

Question 17

Question
The consecutive stages in the embryogenesis are:
Answer
  • Morulla - Blastocyta - Organogenesis - Gastrulation
  • Morulla - Blastocyta - Gastrulation - Organogenesis
  • Blastocyta - Morulla - Gastrulation - Organogenesis
  • Organogenesis - Morulla - Gastrulation - Blastocyta

Question 18

Question
The somites derive from:
Answer
  • Mesoblast
  • Endoblast
  • Ectoblast
  • Mesenchyme

Question 19

Question
The dermatomes form:
Answer
  • Skin epithelium
  • Skin connective tissue
  • Skeletal muscles
  • Embryo's skeleton

Question 20

Question
The segmentation by human embryo is:
Answer
  • The formation of many small holes in the acrosome
  • Penetration of spermatozoon through corona radiata of the oocyte
  • Penetration of spermatozoon through zona pellucida of the oocyte
  • Series of mitosis in the zygote during its movement through the oviduct.

Question 21

Question
Which element is not included in the placental barrier:
Answer
  • Cytotrophoblast
  • Syncytial trophoblast
  • Capillaries of the placental villae
  • Capillaries of the uterus wall

Question 22

Question
The implantation starts:
Answer
  • On the first day after the fertilization
  • 6-7 days after the fertilization
  • 10 days after the fertilization
  • 15 days after the fertilization

Question 23

Question
The fertilization is completed in:
Answer
  • Uterus cavity
  • Oviduct cavity
  • Abdomen
  • Ovary

Question 24

Question
What type of function is the oocyte cortical reaction
Answer
  • Trophic
  • Receptor
  • Barrier
  • Phagocytic

Question 25

Question
The umbilical cord of the newborn baby consists of:
Answer
  • Two arteries and two veins
  • Two arteries and one vein
  • Two veins and one artery
  • One artery and one vein

Question 26

Question
Which of the following is typical for monozygotic twins:
Answer
  • They don't look alike
  • They look alike
  • They can be of a different gender
  • They are always the same gender
  • There are no differences in their immunological characteristics

Question 27

Question
The somites (epimer of the mesoblast) form:
Answer
  • Dermatomes
  • Sklerotomes
  • Myotomes
  • Nephrotomes
  • Hypomer

Question 28

Question
From the mesenchyme derivates:
Answer
  • Cardiac muscle tissue
  • Smooth muscle tissue
  • Skeletal muscle tissue
  • Blood tissue
  • Microglia

Question 29

Question
From the ectoblast derivates:
Answer
  • Nervous tissue
  • Blood tissue
  • Skin epithelium (epidermis)
  • Epithelium of the oral cavity
  • Smooth muscle tissue

Question 30

Question
The fetal sack wall consists of:
Answer
  • Amnion
  • Smooth chorion (chorion laeve)
  • Placental villae
  • Covering decidua (decidua capsularis)
  • Basal decidua

Question 31

Question
The placental barrier after the third month of embryogenesis consists of:
Answer
  • Syncytial trophoblast
  • Cytotrophoblast
  • Epithelium of the placental capillaries
  • Mesenchyme of the placental villa
  • Epithelium of the uterus capillaries

Question 32

Question
The maternal part of the placenta consists of:
Answer
  • Cotyledones
  • Loose connective tissue slips (septae)
  • Blood lacunea
  • Amnion
  • Chorionic plate

Question 33

Question
The fetal part of the placenta consists of:
Answer
  • Loose connective tissue clips (septae)
  • Blood lacunae
  • Chorion frondosum
  • Amnion
  • Cotyledones

Question 34

Question
Which of the following are specific for the acrosomal reaction:
Answer
  • Releasing of the acrosomal enzymes
  • Facilities the penetration of spermatozoon through zona pellucida of the oocyte
  • Type of endocytosis
  • Completed after the spermatozoon receptor binding to zona pellucida
  • Completed after the fertilization

Question 35

Question
Which of the following are specific for the cortical reaction is:
Answer
  • Completed in corona radiata
  • Associated with releasing of the acrosomal enzymes
  • Associated with releasing of the proteolytic enzymes under the oocyte plasmalemma
  • Associated with destroying of the spermatozoon receptor in zona pellucida
  • Blocks the passing of more than one spermatozoon into the oocyte.
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