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Anatomy > Thorax > Flashcards

Thorax Flashcards

1
Q

What are the components of the thoracic wall? Functions?

A

skin, subcutaneous tissue, ribs, intercostal nn.

protection, respiration, muscle attachment

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2
Q

What ribs are true? False? floating?

A

1-7
8-10
11 & 12

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3
Q

What are the three rib joints and what are the classifications?

A

costovertebral
costotransverse
sternocostal

plane/gliding

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4
Q

What are the unique properties of the first rib?

A

Tubercle for anterior scalene

groove for subclavian a. anterior, groove for subclavian v. posterior

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5
Q

Dermatome locations
T4
T6
T10

A

nipple
skin over xiphoid process
umbilicus

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6
Q

External intercostal attachments

A

Rib to rib oriented superior-lateral to inferior-medial
AKA
Down and in

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7
Q

Actions of external intercostals

A

Elevation of the ribs

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8
Q

Innervation of external intercostal

A

Intercostal nerve

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9
Q

Internal intercostal and innermost intercostal attachments

A

Rib to rib oriented superior-medial to inferior-lateral
AKA
Down and out

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10
Q

Actions of internal & innermost intercostal

A

Depression of ribs

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11
Q

Innervations of internal and innermost intercostal

A

Intercostal nerve

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12
Q

Transversus thoracis attachments

A

Posterior sternum to costal cartilages

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13
Q

Transversus thoracis actions

A

Depression of the ribs

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14
Q

Innervation of Transversus thoracis

A

Intercostal nerve

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15
Q

Diaphragm attachments

A

xiphoid process, inner surface of lower ribs & costal cartilages, lumbar vertebrae via the crura
To
Central tendon

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16
Q

Actions of diaphragm

A

inspiration ( negative thoracic pressure = inferior displacement “flattening”)

17
Q

Peripheral innervation of diaphragm

Segmental innervation

A

Phrenic nerve

C3-C5

18
Q

The intercostal nerves, arteries, and veins are positioned ____ to the internal intercostal muscles

A

Deep

19
Q

The intercostal veins, arteries, and nerves are all positioned directly ________ to the ribs

A

Inferior

20
Q

The internal thoracic artery is positioned _____________ to the first six costal cartilages

A

Posterior (deep)

Anatomy (17 decks)

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