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Human Anatomy > Thoracic Spine > Flashcards

Thoracic Spine Flashcards

1
Q

The thoracic region of the spine is the second most…

A

immobile

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2
Q

Posterior Thoracic cage

A

12 thoracic vertebrae and their intervening discs

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3
Q

Lateral Thoracic cage

A

the wall is formed from the pairs of ribs `and 3 layers of muscles that span the intercostal spaces

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4
Q

Anterior thoracic cage

A

the sternum

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5
Q

during contraction of the diaphragm the central portion is drawn..

A

inferiorly

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6
Q

the thorax houses…

A

vital organs (heart, lungs, vessels)

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7
Q

Conduit

A

structures that pass through the thorax to another body part (ex. trachea)

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8
Q

demi facets

A

located on superior and inferior portion of the body

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9
Q

articulating processes are in the ______ plane

A

frontal plane; for side bending

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10
Q

the transverse processes of the thoracic vertebra articulate with _____ to from the _____

A

tubercle of rib; joint of the head of the rib

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11
Q

T1

A

has full superior facet on the body for the head of the 1st rib

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12
Q

T10

A

facet for rib located on the pedicle, not the body

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13
Q

T11 & 12

A

have NO transverse facet for rib articulations 11 and 12; have full facets for ribs instead of demi facets

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14
Q

false ribs

A

8-10

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15
Q

floating ribs

A

11-12

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16
Q

articular portion of neck of rib

A

bears a convex facet for articulation with the transverse process of the similarly numbered vertebrae (costotransverse joint)

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17
Q

non-articular portion of the neck of rib

A

a small roughened area that serves as the attachment site for the lateral costotransverse ligament

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18
Q

the body of the rib begins ____ after the _____

A

laterally; tubercle

19
Q

1st rib

A

most highly curved and broad; contains a single articulating facet on the head of rib

20
Q

10th rib

A

The head of the 10th rib only contains one articular facet for the articulation with the body of the 10th thoracic vertebra

21
Q

ribs 11 and 12

A

The heads of these ribs only contain one articular facet to articulate with their respective vertebra

22
Q

the sternum contains the ______

A

manubrium, body, xiphoid process

23
Q

intervertebral joints

A

synarthrosis, cartilaginous, symphysis

24
Q

costovertebral joints

A

joint of the head of the rib & the costrotransverse joint

25
Q

constrotransverse joint

A

Between the tubercle of the rib and the transverse process of the similarly numbered vertebrae

26
Q

rib 1 attached at the _____

A

manubrium

27
Q

ribs 1-10 join the sternum through ____

A

costal cartilage

28
Q

ribs 2-7 attach on the body of ____

A

the sternum

29
Q

ribs 8-10 join the costal cartilage of _____

A

the rib above

30
Q

ribs 11 and 12 do not attach to ____

A

the sternum

31
Q

1st chondrosternal joint

A

between the 1st rib costal cartilage and the manubrium is a synarthrodial joint

32
Q

2nd chondrosternal joint

A

The joint is divided into two compartments by an intrarticular ligament that attaches the 2nd costal cartilage to the manubristernal joint

33
Q

3rd through 7th chondrosternal joints

A

synovial, planar

34
Q

manubristernal joint

A

synarthrodial; little movement

35
Q

xiphosternal joint

A

symphisis (joint w. fibrocartilagionous disc)

36
Q

diaphragm

A

PA: sternal portion: posterior surface of xiphoid process; costal portion: inner surfaces of ribs 6-12; lumbar portion – anterior surface of 1-3 lumbar vertebrae
DA: central tendon
I: motor innervation Phrenic nerve C3-5; sensory innervation IC nerves T7-12
A: descends during inhalation, ascends during exhalation

37
Q

external intercostals

A

Attachments: • Extend from the inferior edge of the superior rib to the superior surface of the rib below
I: Intercostals
A: respiration; most active

38
Q

internal intercostals

A

Attachments: Pass b/t the most inferior lateral edge of costal grooves of ribs above, to superior surface of ribs below
I: Intercostals
A: Respiration; active in forced respiration

39
Q

innermost intercostals

A

Attachments: internal surfaces of adjacent rubs along the medial edge of the costal grooves
I: Internal
A: Respiration

40
Q

Limiting factors of flexion

A

PLL, Ligamentum Flavum, Supraspinous, Interspinous, Erector spinae

41
Q

Limiting factors of extension

A

ALL, spinous processes, facet joints

42
Q

Limiting factors of side bending

A

Intertransverse, Iliolumbar

43
Q

Bucket handle

A

increases the later diameter

44
Q

pump handle

A

increases the anteroposterior diameter of the thorax

Human Anatomy (9 decks)

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