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Y4R2 - Obstetrics I 🤰 > L2: Fetal Skull > Flashcards

L2: Fetal Skull Flashcards

1
Q

Regions of fetal head

A
  • Base of skull
  • face
  • vault
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2
Q

Regions of fetal head

  • Base of skull
A

Area from junction ( ) jaw & neck anteriorly to suboccipital region posteriorly.

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3
Q

Regions of fetal head

  • Face
A
  • Area from junction ( ) jaw & neck to supraorbital ridges & glabella (bony prominence ( ) 2 supraorbital ridges) & is bounded laterally by 2 ears.
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4
Q

Regions of fetal head

  • Vault
A
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5
Q

Extent of Vault of skull (cranium)

A

Area from root of nose & supraorbital ridges to suboccipital region.

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6
Q

Bones of Vault of skull (cranium)

A

2 frontal bones, 2 parietal bones, 2 temporal bones, squamous portion of occipital bone & wings of sphenoid bones.

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7
Q

Sutures of Vault of skull (cranium)

A
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8
Q

Fontanelles of Vault of skull (cranium)

A
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9
Q

Compare bwtewwn Anterior fontanelle & Posterior fontanelle in terms of

  • Size
  • Shape
  • Formation
  • Surrounding Bones
  • Floor
  • Overriding
A
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10
Q

Regions of Vault of skull (cranium)

A
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11
Q

Brow (sinciput or forehead)

A
  • Area from root of nose & supraorbital ridges to
    anterior fontanelle & coronal sutures.
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12
Q

Vertex

A
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13
Q

Occipital region

A

Area ( ) posterior fontanelle & lambdoid sutures & line below occipital protuberance.

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14
Q

Longitudinal Diameters of Fetal Skull

A
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15
Q

Transverse Diameters of Fetal Skull

A
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16
Q

Length of Suboccipito-bregmatic (SOB)

A
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17
Q

Extent of Suboccipito-bregmatic (SOB)

A
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18
Q

Importnace of Suboccipito-bregmatic (SOB)

A
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19
Q

Length of Suboccipito-frontal (SOF)

A
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20
Q

Extent of Suboccipito-frontal (SOF)

A
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21
Q

Impotance of Suboccipito-frontal (SOF)

22
Q

Length of Occipito-frontal (OF)

23
Q

Extent of Occipito-frontal (OF)

24
Q

Importance of Occipito-frontal (OF)

25
Q

Length of Submento-bregmatic (SMB)

26
Q

Extent of Submento-bregmatic (SMB)

27
Q

Importance of Submento-bregmatic (SMB)

28
Q

Length of Submento-vertical (SMV)

29
Q

Extent of Submento-vertical (SMV)

30
Q

Importance of Submento-vertical (SMV)

31
Q

Length of Mento-vertical (MV)

32
Q

Extent of Mento-vertical (MV)

33
Q

Importance of Mento-vertical (MV)

34
Q

Length of Biparietal diameter (BPD)

35
Q

Extent of Biparietal diameter (BPD)

36
Q

Importance of Biparietal diameter (BPD)

37
Q

Length of Subparietal-supraparietal

38
Q

Extent of Subparietal-supraparietal

39
Q

Importance of Subparietal-supraparietal

40
Q

length of Bitemporal

41
Q

Extent of Bitemporal

42
Q

Length of Bimastoid

43
Q

Extent of Bimastoid

44
Q

Importance of Bimastoid

45
Q
  • with vertex presentation, all sutures are palpable during labor except ….. sutures, which are situated on either side covered by soft tissue parts & can’t be felt in living fetus.
46
Q

Largest diameter of fetal head is: ….

A

Mento-vertical diameter (13.5 cm).

47
Q

Smallest diameter of fetal head is: …..

A

Bimastoid diameter (7.5 cm).

48
Q
  • Smallest circumference of fetal head (32 cm) corresponds to plane of SOB diameter while largest circumference (34.5 cm) corresponds to plane of OF diameter.
49
Q

Importance of sutures & fontanelles

A

1) Diagnosis of presentation, position & attitude.
2) Allow moulding.
3) Follow up of progress of labor.

50
Q

Other fontanelles

A

There are 4 temporal fontanelles ( ) temporal bones & parietal bones.

51
Q

Def of Glabella

A

Bony prominence ( ) 2 supraorbital ridges.

52
Q

Def of Nasion

A

Root of nose just below glabella

Y4R2 - Obstetrics I 🤰 (59 decks)

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