general embryology quiz for block 2 exam Dr.Youssef Shoukry

Question

The primitive streak develops in which layer of embryonic disc?

Answer 1

a. Epiblast.

Answer 2

b. Hypoblast.

Answer 3

c. Mesoderm.

Answer 4

d. Endoderm.

Answer 5

e. Notochord.

Answer 6

a. Dermis.

Answer 7

b. Ganglia.

Answer 8

c. Pleura.

Answer 9

e. Kidneys.

Answer 10

a. Velamentous insertion of cord.

Answer 11

b. Placenta accreta.

Answer 12

c. Battledore placenta.

Answer 13

d. Succenturiata placenta.

Answer 14

e. False cord knot.

Answer 15

e. Thirteen.

Answer 16

a. Neural crest.

Answer 17

b. Notochord.

Answer 18

c. Sclerotome.

Answer 19

d. Somite.

Answer 20

e. Ectoderm.

Answer 21

b. Ectoderm.

Answer 22

c. Mesoderm.

Answer 23

d. Amnion.

Answer 24

e.Endoderm.

Answer 25

a. Breakdown of oral membrane.

Answer 26

b. Allantois.

Answer 27

c. Neurenteric canal.

Answer 28

d. Vitello-intestinal duct.

Answer 29

e. Breakdown of cloaca! membrane.

Answer 30

a. Sclerotome

Answer 31

. b. Intermediate cell mass.

Answer 32

c. Dermatome.

Answer 33

d. Lateral plate mesoderm.

Answer 34

e. Connecting stlak.

Answer 35

a. Somites.

Answer 36

b. Oral membrane.

Answer 37

e. Dermomyotomes.

Answer 38

c. Nephrogenic cord.

Answer 39

d. Sclerotomes.

Answer 40

a. Battledore placenta.

Answer 41

b. Accessory placenta.

Answer 42

c. Bipartite placenta.

Answer 43

d. Placenta praevia

Answer 44

e. Tripartite placenta

Answer 45

a. They may be monozygotic or dizygotic.

Answer 46

c. Monozygotic twins have always identical sex & blood groups.

Answer 47

b. Conjoint twins are dizygotic twins.

Answer 48

d. Dizygotic twins may have identical sex & blood groups.

Answer 49

e. Monozygotic twins may have 2 amniotic sacs.

Answer 50

a. Foetal blood.

Answer 51

b. Maternal blood.

Answer 52

c. A mixture of foetal & maternal blood.

Answer 53

d. Blood with high C02 content.

Answer 54

e. Blood with low 02 content.

Answer 55

a. Notochordal canal.

Answer 56

b. Cloaca! membrane.

Answer 57

c. Buccopharyngealmembrane.

Answer 58

d. Intraembryonic coelom

Answer 59

e. None of the above.

Answer 60

(A) The skin and its appendages.

Answer 61

(B) The lining of all orifices of the body that open into the skin.

Answer 62

(C) The nervous tissue & the pituitary gland.

Answer 63

(D) Adrenal medulla.

Answer 64

(E) Muscles of the iris.

Answer 65

(F) Muscles of the limbs.

Answer 66

(A) Too long umbilical cord.

Answer 67

(B) True knot of the umbilical cord.

Answer 68

(C) False knots of the umbilical cord.

Answer 69

(D) All of the above

Answer 70

(A) Amniotic cavity contains watery fluid.

Answer 71

(B) Hydroamnios may be due to esophageal atresia

Answer 72

(C) Oligohydraminos may be due to renal agenesis (Failure of formation of the kidneys).

Answer 73

(D) It prevents fetal movements.

Answer 74

(A) 2 Umbilical arteries.

Answer 75

(B) 1 Umbilical veins.

Answer 76

(C) Wharton’s jelly.

Answer 77

(D) Allantois & vitellointestinal duct.

Answer 78

(A) Triasomy of the chromosome 14.

Answer 79

(B) Triasomy of the chromosome 18.

Answer 80

(C) Triasomy of the chromosome 21.

Answer 81

(D) Triasomy of the chromosome 23.

Answer 82

A) Muscles of the limbs.

Answer 83

(B) Anterolateral body wall muscles.

Answer 84

(C) Smooth muscles of the viscera (GIT).

Answer 85

dermis of the skin

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general embryology quiz for block 2 exam Dr.Youssef Shoukry

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