Embryology Bone

8/15/2019 Embryology Bone

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Multiple Choice Questions

1. Which of the following is not part of axial skeleton?

a) Sternumb) Mandiblec) Humerusd) Sacrume) Cal arium

MCQ Ans. 1

!. "ll the following are components of appendicular skeleton excepta) Cla icle

b) #emurc) $el ic boned) %ertebraee) Carpal bones MCQ Ans. 2

&. 'he paraxial mesoderm around the neural tube gi es rise to......a) Scleretomeb) Somitesc) (ctodermd) ermom*otome

e) +eural crest MCQ Ans. 3

,. 'he bones of the pel ic and shoulder girdles are from the mesench*mal cellsform......a) $araxial mesodermb) -ateral plate mesodermc) ntermediate mesodermd) /eneral mesoderme) +eural crest MCQ Ans. 4

0. uring chondrogenesis the mesench*mal cells first differentiate in to......a) 2steoblastsb) Chondroc*tesc) Chondroblastsd) Chondroclastse) +one of the abo e MCQ Ans. 5

3. 'he organic component of bone matrix is produced b*4a) 2steoblasts

b) 2steoc*tesc) 2steoclasts

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d) Chondroc*tese) Chondroblasts

MCQ Ans. 6

5. Which of the following cell t*pes is responsible for s*nthesi6ing the organic

component of cartilage matrix?a) 2steoc*tesb) Chondroc*tesc) 2steoblastsd) Chodroblastse) Chondroclasts

MCQ Ans. 7

7. ........... are cells that tear down and remodel bonea) Macrophagesb) 2steoc*tesc) 2steoc*tesd) Chondroclastse) 2steoclasts MCQ Ans. 8

8. ntramembranous and (ndochondral are ! mechanisms of4a) 'issue depositionb) 9one remodelingc) (mbr*onic skeletal ossificationd) Cartilage resorptione) +one of the abo e MCQ Ans. 9

1:. 'he flant bones of the skull de elop b* mean of....a) (ndochondoral ossificationb) ntramembranous ossificationc) Cal arium ossificationd) nternal ossificatione) (xternal ossification MCQ Ans. 10

11. 'emporar* openings between the cranial bones at birth are4a) Cranial openingsb) #rontal sinusesc) #ontanellesd) (piph*seal platese) Cribifrom plates

MCQ Ans. 11

1!. "fter birth continuous remodelling of bones occurs b* coordinate action of...a) 2steoc*tes and osteoblastsb) 2steoc*tes and osteoclastsc) 2steoblasts and osteoclatsd) Chondroblast and chondroclastse) "ll of the abo e

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MCQ Ans. 12

1&. 'he two sources of membranous neuorocranium are ........a) $araxial and lateral mesodermb) $araxial mesoderm and neural crest cells

c) -ateral mesoderm and neural crest cellsd) (ctoderm and endoderme) ntermediate mesoderm and neuroectoderm MCQ Ans. 13

1,. 'he mandibular process of the first arch de elop in toa) mandibular processb) Mandiblec) Maxillaed) Mandible and maxillaee) #acial bones MCQ Ans. 14

10. 'he Mickel;s cartilage formsa) Malleus and incusb) ncus and stapesc) Malleus and stapesd) (ar ossiclese) St*loid process MCQ Ans. 15

13. 'he first sets of bones that become full* ossified in the human embr*o area) +eurocraniumb) (ar ossiclesc) Cla icles and hip boned) %iscerocraniume) %ertebral column MCQ Ans. 16

15. uring de elopment the notochord degenerate and form the....a) Centrumb) +ucleus pulposusc) "nnulus fibrosed) nter ertebral disce) %ertebral arch MCQ Ans. 17

17. 'he outer co ering of each bone made from connecti e tissue is calleda) $erichondriumb) $eriosteumc) iaph*sisd) 2uter la*ere) (xternal cartilage MCQ Ans. 18

18. .......exacts an inducti e influence on the limb mesench*me to initiate the

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growth and de elopment of limb bonesa) "pical ectodermal ridgeb) (ctodermal apical ridgec) "pical mesodermal ridged) "pical limb ridgee) -imbs inductor

MCQ Ans. 19

!:. 'he long shaft of the long bone is calleda) (piph*sisb) iaphragmc) iaph*sisd) Metaph*sise) iaph*seal shaft MCQ Ans. 20

!1. /rowth in the length of the long bone occurs at.....a) $eriosteumb) iaph*sisc) (piph*sisd) (piph*sial platee) iaph*sial plate MCQ Ans. 21

!!. ............ is the


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bod* wall MCQ Ans. 28

!8. (xcess of pituitar* growth hormone will result in a condition called......a) Cretinism

b) warfismc) "cromegal*d) /iantisme) +one of the abo e MCQ Ans. 29

&:. ncomplete closure of the ertebral column results in4a) Scoliosisb) Spina bifidac) -ordosisd) *phosise) %ertebral fissure

MCQ Ans. 30

&1. " letaral de iation of the alignment of the ertebral column is called aa) -ordosisb) *phosisc) Scoliosisd) -ateral de iatione) %ertebral de iation MCQ Ans. 31

&!. $remature closure of the cranial sutures ma* result to condition knownas......a) Cranios*nostosisb) "craniac) Microcephal*d) Cranioschisise) H*drocephalus

MCQ Ans. 32

&&. "ll the following are common t*pes of limb anomalies excepta) "meliab) Meromeliac) Micromeliad) $hocomeliae) Sternomelai MCQ Ans. 33

&,. ..... is t*pe of spina bifida in ol ing the spinal cord and meninges.a) Spina bifida meningab) Spina bifida occultac) Spina bifida c*sticad) Spina bifida chordomae) Spina bifida ertebrata

MCQ Ans. 34

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&0. . .... is a deformit* in which the sole of the foot is turned mediall* and thefoot is adducted and plantar flexeda) "dducted footb) Clubfoot

c) Cleft #ootd) 9rach*dact*l*e) Congenital foot MCQ Ans. 35
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Embryology Bone