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Thoracic Wall Flashcards

(58 cards)

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1
Q

Function of ribcage

A

protect vital organs; needs movement to breathe

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2
Q

Level of suprasternal notch

A

vertebral level T2-T3

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3
Q

Sternal angle (of Louis)

A

Vertebral level T4-T5
Manubriosternal joint
costal cartilage of 2nd rib

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4
Q

Xiphoid process

A

Vertebral level of T9-T10

ossifies at about 40 years of age

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5
Q

Sternum

A

flat bone, levels T5-T9

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6
Q

Root of spine of scapula

A

vertebral level T4, palpate at spine of T3

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7
Q

Inferior angle of scapula

A

vertebral level T8, overlies Rib 7 and points to rib 8

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8
Q

Midclavicular line

A

1/2 way through clavicle

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9
Q

Anterior axillary line

A

vertical line dropped at lateral border of pectoralis major

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10
Q

Mid-axillary line

A

vertical line through middle of axillary fossa, down middle of armpit to illiac crest

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11
Q

Posterior axillary line

A

vertical line dropped at lateral border of latissimus dorsi

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12
Q

Scapular line

A

vertical line through inferior angle of scapula

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13
Q

Midsternal line

A

vertical line cuts body in half down sternum

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14
Q

Thoracic Inlet (Superior thoracic aperture) consists of

A

Body of T1, 1st pair of ribs and cartilages, and superior end of manubrium (suprasternal notch)

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15
Q

Thoracic Outlet syndrome

A

things get pinched between first rib and clavicle (arteries, nerves, veins)

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16
Q

Thoracic Outlet (inferior thoracic aperture) consists of

A

Xiphisternal joint, 12th ribs and costochondral junction, closed by thoracic diaphragm

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17
Q

Sternal region of thoracic cavity (median anterior wall) consists of

A

Sternum (manubrium, body, xiphoid process), Clavicular and chondral attachments to sternum

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18
Q

Costovertebral joint

A

connects head of rib and vertebral body at and above its level

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19
Q

Costotransverse

A

Tubercle of rib and transverse process of vertebra - at same level

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20
Q

True Ribs

A

connected to vertebrae and sternum; 1st to 7th pair

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21
Q

False ribs

A

Don’t directly attach to sternum; 8th to 12th pair

Floating ribs - 11th & 12th

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22
Q

Rib head

A

attaches to vertebral body

2 facets - demifacets articulate with vertebral body at level and one above

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23
Q

Rib Tubercle

A

part of rib that articulates with transverse processes at transverse costal facet

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24
Q

Rib Shaft

Study These Flashcards
A

angle - point of greatest curvature

forms lateral thoracic wall

25
Rib costal groove
houses intercostal neurovascular bundle | VAN - vein on top, artery, nerve on bottom
26
Costochondral joint
rib to cartilage - no movement
27
Sternocostal joint
1st rib is primary cartilaginous joint, rest are synovial plane-type joints
28
Sternoclavicular joint
between sternum and clavicle; synovial, saddle-type joint
29
Manubriosternal joint
immovable - between sternal body and manubrium | secondary cartilagenous joint
30
Xiphisternal joint
primary cartilagenous joint - immovable | between xiphoid process and body of sternum
31
Male breast is located
in 4th intercostal space
32
Female breast is located in
superficial fascia, is a modified sweat gland 1/3 sits on serratus anterior and 2/3 sits on pectoralis major vertically from 2nd to 6th ribs, transversely from lateral border of sternum to mid-axillary line
33
Lactiferous ducts
open onto the nipple
34
Pectoralis Major
O: lateral border of sternum upper 6 costal cartilages, clavicle I: lateral lip of interubercular sulcus of humerus N: medial and lateral pectoral nerves (on deep surface) A: flex, adduct, and rotate arm medially B: pectoral branch of thoraco-acromial artery
35
Pectoralis Minor
``` Deep to P. major O: outer surface of ribs 3-5 I: Coracoid process of scapula N: Medial pectoral nerve B: Pectoral branch of thoraco-acromial trunk A: lowers lateral angle of scapula ```
36
Serratus Anterior
O: lateral surface of upper 8-9 ribs I: costal surface of medial border of scapula N: Long thoracic nerve B: Lateral thoracic artery (on superficial surface of muscle) A: protracts scapula, holds it against thoracic wall
37
Retromammary Space
between lactiferous glands and deep fascia, allows movement of breast
38
Suspensory (Cooper's) ligament
attaches gland to dermis of skin, well developed superiorly | If breast tumor grows here, will pull suspensory ligament in and dimples skin
39
Vasculature to breast
Internal thoracic a., lateral thoracic a., and pectoral branches of thoracoacromial trunk
40
Levator Costarum
Transverse processes C7-T11 to costal tubercle and costal angle 12 pairs of fan shaped muscles
41
Intercostal muscles
between ribs, innervated by local intercostal nerves (ventral primary ramus of spinal nerve) 11 intercostal spaces
42
External intercostal muscle
Elevates ribs Fibers run anteroinferiorly from upper to lower rib starts at costal tubercle, runs to costochondral junction Extends to sternum as external (anterior) intercostal membrane
43
Internal intercostal muscle
starts anteriorly Costal (bony ribs) portion depresses Chondral (costal cartilage) portion elevates Fibers run posteroinferiorly from upper to lower rib Muscle starts at lateral border of sternum, runs to costal angle Extends to vertebrae as internal (posterior) intercostal membrane
44
Innermost intercostal muscle
elevates ribs located in third muscular layer of intercostal space found internally on poserolateral thoracic walls
45
Subcostal muscle
located internally on posterior thoracic wall crosses more than one intercostal space elevates ribs located in third muscular layer of intercostal space posteriorly
46
Transversus thoracics
Depresses ribs Lower sternum to internal surface of 2nd to 6th costal cartilage Located in third muscular layer of intercostal space anteriorly
47
Parietal pleura
lines internal thoracic cavity external to the pulminary pleura, covers diaphragm attaches to thoracic muscles via endothoracic fascia
48
Neurovascular bundle
housed in the costal groove between the second and third muscular layers
49
Intercostal nerves
``` in costal groove Thoracic nerves (T1-T11) Thoracoabdominal nerves (T7-T11) ```
50
Intercostal arteries
anastomoses within intercostal space
51
Anterior internal thoracic artery
terminates at 6th IC space | Branches into Musculophrenic and Superior epigastric arteries
52
Musculophrenic artery
branch of internal thoracic artery | supplies 7th - 9th IC space
53
Superior epigastric artery
branch of internal thoracic artery
54
No anterior intercostals in
10th and 11th intercostal spaces
55
Posterior intercostal artery
supplies 3rd to 11th IC spaces
56
Superior intercostal artery
branch of costocervical trunk, assists in supplying 1st and 2nd spaces - posterior
57
Thoracic aorta
supplies all 11 IC spaces | posterior
58
Subcostal nerve, artery, and vein
located under 12th rib | T12 nerve

Anatomy (20 decks)

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