Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

MIDS 187- OB2 > Lesson 22: Fetal Spine > Flashcards

Lesson 22: Fetal Spine Flashcards

1
Q

How many ossification centres are there?

A

Three (3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What plane are all three ossification centres seen at the same time?

A

TRV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In what week can the ossification centers be seen in TRV plane?

A

16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

True or False: The two posterior ossification centres lie behind the spinal canal within the laminae

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which vertebrae have a quandrangular shape?

A

Cervical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which 2 levels of the vertebrae do they look triangular?

A

Thoracic and Lumbar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which level of the vertebrae do the ossification centres have a wider placement?

A

Sacral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In what plane is the neural tube in the 1st trimester and the spinal cord in the 2nd and 3rd trimester?

A

Sagittal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The conus medullaris can be seen in the ______ plane at the 2nd and 3rd _______ levels of the spine.

A

Sagittal
Lumbar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What three things do we look for to determine spinal normalcy?

A

1) Intact neural canal
2) normal location and shape of ossification centres
3) intact dorsal skin contour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Imaging this structure increases our confidence in normal spinal development

A

Conus Medullaris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

At MINIMUM, how many planes should we survey the spine

A

2 ( axial and longitudinal)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

This will rise in blood levels of mother if fetus has an open skin neural tube defect

A

MSAFP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The neural tube is formed in week _____.

A

Three (3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Embryology of the neural tube takes ______ days. Any disruption in this process demonstrates the connection between spina bifida and ________ defects.

A

Two (2)
Caudal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Spina Bifida results from the incomplete closure of these two bony elements of the spine:
1) ___________
2) ___________

A

1) Lamina
2) Spinous processes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Name the two types of Spina Bifida Defects

A

1) Ventral
2) Dorsal

18
Q

True or False: Ventral defects of the vertebral bodies ( in spina bifida) most commonly affect the lower levels of the spine

A

False: they affect the upper spine like the lower cervical into the upper thoracic

19
Q

Vertebral body splitting and devlopment of a neurogenic - origin cystic structure is a result of Spina Bifida ______ defect.

A

Ventral

20
Q

Closed Spina Bifida, also known as Spina bifida _________, affects the _____-_______ level of the spine.

A

Sacrolumbar

21
Q

This type of Spina Bifida is not very noticeable on the surface. It may have a tuft of hair or other dermal lesion covering the affected area

A

Occulta

22
Q

The neural canal is exposed in Spina Bifida _________.

A

Aperta

23
Q

Spina Bifida Aperta has a ___________ that contains neural tissue inside the protruding sac.

A

Myelomeningocele

24
Q

Spina Bifida with myelomeningocele will have the spinal cord ________.

A

Posterior

25
Q

What are three maternal factors causing NTD’s?

A

1) Diabetes Mellitus
2) Obesity
3) Folate deficiency

26
Q

True or false: NTD’s are more common in males

A

False: more common in females

27
Q

What plane is best to see a meningocele?

A

SAG

28
Q

True or False: The only way to make a definitive diagnosis is by viewing the myelomeningocele

A

True

29
Q

Seeing the posterior ossification centres splay in the TRV plane, giving a “U” or “V” appearance can indicate ______________.

A

Spina Bifida

30
Q

Spina Bifida can be suspected when you see these two signs in the fetal head

A

1) Banana (cerebellum)
2) Lemon (skull)

31
Q

Clubfeet, Rocker bottome feet, and hip deformities are commonly associated with this type of Spina Bifida

A

Aperta

32
Q

What is the best way to show open vs closed forms of spina bifida?

A

Cranial Anatomy
abnormal: open
normal: closed

33
Q

Scoliosis is best imaged in the _______ plane, while kyphosis is best imaged in the ________ plane.

A

Coronal
Sagittal

34
Q

Scoliosis is seen as ________ displacement of the ________ ossification centres

A

Lateral
Anterior

35
Q

What levels of the spine can caudal regression syndrome affect?

A

Agenesis of the coccyx, to absence of the sacral, lumbar, and lower thoracic vertebrae

36
Q

What 5 parts of the fetus can caudal regression syndrome affect?

A

Caudal spine
Spinal Cord
Hindgut
Urogenital system
Lower limbs

37
Q

What are two indicators of caudal regression syndrome seen in the FIRST trimester?

A

Short CRL
Abnormal yolk sac

38
Q

What is the most common location for sacrococcygeal teratomas to develop?

A

The caudal end of the neural tube
(can also develop in gonads, umbilical cord, and placenta)

39
Q

What is the most common neoplasm in the newborn?

A

Sacrococcygeal Teratoma

40
Q

Sacrococcygeal teratomas most commonly affects this sex, however the opposite sex have a higher chance of developing the malignant form

A

Female

41
Q

What Sacrococcygeal teratoma types are most common

A

1 and 2

MIDS 187- OB2 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions