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Spinal Anatomy > Regions of the Vertebral Column: Thoracic Region (Atypical Thoracic Vertebrae T1, T9-T12) > Flashcards

Regions of the Vertebral Column: Thoracic Region (Atypical Thoracic Vertebrae T1, T9-T12) Flashcards

1
Q

How many synovial joints are formed at the vertebral body of T1?

A

Four normally

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2
Q

How many symphysis joints are formed with the vertebral body of T1?

A

Two

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3
Q

How many joints are formed at the vertebral body of T1?

A

Typically ten (fourteen if the rib ligaments are included)

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4
Q

What ligament is absent at the costotransverse joint of T1?

A

The superior costotransverse ligament

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5
Q

What ligaments attach to the transverse process of T1?

A

Intertransverse, capsular costotransverse, superior costotransverse, inferior costotransverse, and lateral costotransverse

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6
Q

What muscles attach to the spinous process of T1?

A

The trapezius, rhomboid minor, serratus posterior superior, splenius capitis, spinalis thoracis, spinalis cervicis, spinalis capitis, semispinalis thoracis, multifidis, rotator longus, rotator brevis, interspinalis

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7
Q

How many synovial joints are formed at the vertebral body of T9?

A

Four

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8
Q

How many symphysis joints are formed with the vertebral body of T9?

A

Two

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9
Q

How many joints are typically formed at the vertebral body of T9?

A

Typically ten (fourteen if the costocentral stellate/radiate ligaments are included)

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10
Q

What ligaments attach to the transverse process of T9?

A

Intertransverse, capsular costotransverse, superior costotransverse, inferior costotransverse, and lateral costotransverse ligaments

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11
Q

What muscles attach to the spinous process of T9?

A

The trapezius, latissimus dorsi, multifidis, rotator longus, rotator brevis, and interspinalis

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12
Q

How many synovial joints are formed at the vertebral body of T10?

A

Two

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13
Q

How many symphysis joints are formed with the vertebral body of T10?

A

Two

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14
Q

How many joints are typically formed at the vertebral body of T10?

A

Typically eight (twelve if the costocentral stellate/radiate ligaments are included)

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15
Q

Which synovial joint surface is absent from the vertebral body of T10?

A

Inferior costal demi-facets

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16
Q

Para-articular processes are more commonly observed on which segment of the spine?

A

T10

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17
Q

What muscles attach to the transverse process of T10?

A

Longissimus thoracis, semispinalis thoracis, multifidis, rotator longus, rotator brevis, intertransversarii, levator costarum longus, and levator costarum brevis

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18
Q

A dimpling or depression of the skin in the thoracic region is often characteristic of the location of which segment?

A

T10

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19
Q

What name is given to T11?

A

The anticlinal vertebra

20
Q

What is the outline of the vertebral body of T11 on superior view?

A

Kidney-shaped or reniform

21
Q

What joint classifications are identified at the vertebral body of T11?

A

Fibrous (amphiarthrosis) syndesmosis, cartilaginous (amphiarthrosis) symphysis, and synovial plane (diarthrosis arthrodia) joint

22
Q

Which ligament of the costocentral joint is absent for the eleventh rib?

A

The costocentral interarticular or intra-articular ligament

23
Q

What part of the transverse process is absent present on T11?

A

The transverse costal facet

24
Q

What ligaments form the costotransverse joint of T11?

A

The superior costotransverse, and slightly developed inferior costotransverse and lateral costotransverse ligaments

25
Q

What muscles attach to the transverse process of T11?

A

Longissimus thoracis, semispinalis thoracis, multifidis, rotator longus, rotator brevis, intertransversarii, and levator costarum brevis

26
Q

How many synovial joints are typically present at T11?

A

Six

27
Q

What muscles attach to the spinous process of T11?

A

Trapezius, latissimus dorsi, serratus posterior inferior, iliocostalis lumborum, spinalis thoracis, multifidis, rotator longus, rotator brevis, and interspinalis

28
Q

At which segments of the thoracic spine will the spinalis muscle not attach?

A

T9, T10

29
Q

What is the outline of the vertebral body of T12 on superior view?

A

Kidney-shaped or reniform

30
Q

How many synovial joints are formed at the vertebral body of T12?

A

Two

31
Q

How many symphysis joints are formed with the vertebral body of T12?

A

Two

32
Q

How many syndesmosis joints are formed at the vertebral body of T12?

A

Four are typically identified (as many as six if the costocentral stellate/radiate ligaments are included)

33
Q

Which muscle(s) is attached to the vertebral body of T12?

A

Psoas major and psoas minor

34
Q

What does the superior tubercle of T12 represent?

A

The mammillary process of lumbar vertebrae

35
Q

What does the inferior tubercle of T12 represent?

A

The accessory process of lumbar vertebrae

36
Q

What ligaments form the costotransverse joint of the twelfth rib?

A

The superior costotransverse ligament from T11 and the lumbocostal ligament from L1

37
Q

Which costotransverse ligament(s) are attached at T12?

A

None; the capsular, superior, inferior, and lateral costotransverse ligaments lack an attachment to T12

38
Q

Which costotransverse ligament(s) lack an attachment to T12?

A

Capsular costotransverse, superior costotransverse, inferior costotransverse, and lateral costotransverse ligaments

39
Q

What muscles attach to the transverse process region of T12?

A

The longissimus thoracis, semispinalis thoracis, multifidis, rotator longus, rotator brevis, and intertransversarii

40
Q

Which segment is the last to demonstrate a levator costarum brevis attachment?

A

T11

41
Q

Which segment is the last to demonstrate a levator costarum longus attachment?

A

T10

42
Q

What is the orientation of the superior articular facets of T12?

A

They face backward, upward, and lateral (BUL)

43
Q

What is the orientation of the inferior articular facets of T12?

A

They face forward, downward, and lateral (FoLD)

44
Q

How many synovial joints are typically present at T12?

A

Six

45
Q

What is the generic appearance of the spinous process of T12?

A

Lumbar-like, similar in length to T11

46
Q

What muscles attach to the spinous process of T12?

A

The trapezius, latissimus dorsi, serratus posterior inferior, iliocostalis lumborum, spinalis thoracis, multifidis, rotator longus, rotator brevis, and interspinalis

Spinal Anatomy (33 decks)

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