Thoracic Wall Flashcards

1
Q

which ribs are true ribs?

A

1-7

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2
Q

what determines a true rib?

A

attaches directly to sternum via costal cartilage

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3
Q

which ribs are false indirectly attached ribs?

A

8-10

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4
Q

which ribs are false floating ribs?

A

11-12

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5
Q

ribs are what type of bone?

A

curved flat bones

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6
Q

heads of ribs 2-9 articulation

A

Sup facet: vertebral body above Inf facet: vertebral body below Crest - projection between articular facets

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7
Q

what is found in the costal groove?

A

intercostal blood vessels, nerve, and muscles

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8
Q

what part of the rib forms the costochondral joint?

A

cup for the costal cartilage

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9
Q

T2-T9 articulate with ribs where?

A

bilaterally demifacets on sup/inf surfaces

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10
Q

plane of articular processes allows T vert to do what?

A

rotate and ab-/adduct but not FL/EX

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11
Q

joint type for manubrium and 1st rib

A

synchondrosis

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12
Q

Costovertebral joint type

A

articulations are planar but overall joint is condyloid

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13
Q

Costovertebral joint, # of articulations

A

typically 3 (ribs 2-9)

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14
Q

Costovertebral joint ligaments

A

1). strong capsule 2). intra-articular ligament 3). radiate ligament

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15
Q

collective movements at the Costovertebral joints?

A

pump/bucket handle – each articulation rotates a little which collectively elevates/depresses the sternum

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16
Q

how many articulations does a costotransverse joint have?

A

1 articulation per rib

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17
Q

where does the costotransverse joint articulate?

A

transverse process of the inferior vertebrae

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18
Q

Costotransverse joint type

A

planar

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19
Q

ribs 1-6 costotransverse joints

A

slightly convex (rib) with concave (transverse process) – allow rotation = pump handle

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20
Q

ribs 7-10 costrotransverse joints

A

flat planar - allow gliding = bucket handle

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21
Q

Costotransverse joint ligaments

A

weak capsule, lateral and superior costotransverse ligaments

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22
Q

Sternocostal joints

A

1). rib 1 - synchondrosis 2). ribs 2-10 have costochondral and sternochondral joints

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23
Q

costochondral joint type

A

synchondrosis (rib to cartilage)

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24
Q

sternochondral joint type

A

synovial planer (cartilage to sternum)

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25
sternochondral joint rib 1
syncondrosis
26
sternochondral joint ribs 2-10
synovial planar/gliding
27
superior aperture borders
1). post - T1 body 2). lat - rib 1 3). ant - manubrium
28
superior aperture contents
esophagus, trachea, nerves (vagus, sympathetic trunk, cervical plexus), blood vessels (carotids, subclavian, vertebral, jugular)
29
inferior aperture borders
1). post - T12 body 2). lat post - 11 & 12 ribs 3). lat ant - costal cartilage ribs 7-10 4). ant - xiphosternal joint
30
what is the inferior aperture covered by?
respiratory diaphragm
31
inferior aperture contents
esophagus, nerves (vagus, sympathetic chain), blood vessels (inf vena cava, descending aorta), internal thoracic arteries
32
what are the internal thoracic arteries called as they pass the diaphragm?
superior epigastric arteries
33
subdivisions of thoracic cavity
R/L Pleural cavity, mediastium
34
what is in the mediastium?
pericardial cavity, esophagus, trachea, great vessels, nerves
35
Muscles of the thoracic cavity
1) . Serratus posterior (S/I) 2) . Levator Costarum 3) . External intercostals 4) . Internal intercostals 5) . innermost intercostals 6) . subcostal 7) . transversus thoracis
36
Serratus posterior superior, origin
S: spinous processes C7-T3
37
Serratus posterior superior, insertion
ribs 2-4
38
Serratus posterior superior, innervation
intercostal nerves
39
Serratus posterior superior, action
proprioception for respiration control
40
Serratus posterior inferior origin
spinous processes T11-L2
41
Serratus posterior inferior insertion
ribs 9-12
42
Serratus posterior inferior, innervation
intercostal nerve
43
serratus posterior inferior, action
proprioception for respiration control
44
Levator costarum origin
transverse processes of C7-T11
45
Levator costarum insertion
rib below
46
Levator costarum innervation
dorsal rami
47
Levator costarum action
elevate ribs for inspiration
48
external intercostals origin
superior rib
49
external intercostals insertion
inferior rib
50
external intercostals innervation
intercostal nerve
51
external intercostals action
elevate adjacent rib for inspiration
52
internal intercostals origin
inferior rib
53
internal intercostals insertion
superior rib
54
internal intercostals innervation
intercostal nerve
55
internal intercostals action
depress adjacent rib for expiration
56
innermost intercostals origin
inferior rib
57
innermost intercostal insertion
superior rib
58
innermost intercostal innervation
intercostal nerve
59
innermost intercostal action
depress adjacent rib expiration
60
subcostal origin
inferior rib
61
subcostal insertion
superior rib 2 or 3 above
62
subcostal innervation
intercostal nerve
63
subcostal action
depress ribs for expiration
64
transversus thoracis origin
sternum
65
transversus thoracis insertion
costal cartilage
66
transversus thoracis innervation
intercostal nerve
67
transversus thoracis action
proprioception for respiration control
68
ventral rami T1-11
intercostal nerve
69
what are the intercostal nerves further divided to?
S/I collateral branches and Lat/Ant cutaneous
70
ventral rami T12
subcostal nerve
71
sympathetic chain ganglia
connected to ventral rami by rami communicants; located on either side of vertebral bodies forming thoracic vertebral column
72
blood supply to Ant and Ant/lat thoracic wall
R/L subclavian arteries -\> internal thoracic artery -\> ant intercostals arteries -\> ant and lat intercostals spaces of ribs 1-10
73
blood supply to post and post/lat thoracic wall
descending abdominal aorta -\> paired post intercostal arteries -\> post and post/lat intercostals spaces of ribs 4-11
74
Anterior intercostal veins
internal thoracic veins -\> brachiocephalic vein
75
posterior intercostals veins
azygos/hemiazygos system -\> superior vena cava
76
lymph flow
blood plasma -\> capillary filtration -\> ECF -\> lymph capillary -\> lymph fluid -\> lymph vessel -\> lymph nodes -\> lymph trunk -\> lymph duct
77
2 lymph ducts
Right Lymphatic Duct and Thoracic Duct
78
what does the Right lymphatic duct drain?
right side of head, arm, and thorax
79
what does the Thoracic duct drain?
left side head, arm, thorax, and entire abdomen, pelvis, legs
80
structural components of the mammary gland
1) . glandular tissue 2) . lactiferous ducts/sinus 3) . nipple 4) . areola 5) . fat 6) retro-mammary space 7) . pectoralis fascia 8) . suspensory (Cooper's) ligaments
81
anterior arterial blood flow to the mammary glands
anterior intercostal -\> medial mammary branches
82
axillary arterial blood flow to the mammary glands
axillary artery -\> lateral thoracic and thoracoacromial -\> lateral breast
83
posterior arterial blood flow to the mammary glands
posterior intercostals artery -\> deep structures