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Anatomy 3401 > 14 Thorax > Flashcards

14 Thorax Flashcards

1
Q

Structures of the thorax (the container)

A
  1. Vertebral column
  2. Ribs
  3. Manubrium
  4. Sternum
  5. Ziphoid Process (T10)
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2
Q

Structures in the intercostal spaces

A

Intercostal Muscles

Intercostal veins / arteries / nerves

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3
Q

Superior thoracic aperture: bounded by? access to?

A

1st thoracic vertebrae
1st pair of ribs / costal cartilages
Manubrium

Access to head/neck, upper limb

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4
Q

inferior thoracic aperture: bounded by? access to?

A

T12
ribs 11 and 12
costal margin (ribs 7-10)
diaphragm

access to abdomin

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5
Q

Location of intercostal veins, arteries, and nerves?

A

Between internal intercostal muscles and Innermost intercostal muscles

VAN
superior –> inferior

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6
Q

Direction of intercostal muscles?

A

Down and Medial (hands in pockets)
- external

Down and Lateral (hands in axilla)
- internal and innermost

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7
Q

Intercostal muscles?

A
  • External intercostal muscles
  • Internal Intercostal muscles
  • Innermost intercostal muscles
  • Transverse Thoracis Muscles
  • Subcostal muscles
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8
Q

Transverse intercostal muscles location

A

Posterior aspect sternum and ziphoid process
to
Inner surface costal cartilages 2-6

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9
Q

Subcostal muscle location

A

Angle of ribs to angle 2-3 ribs above

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10
Q

Subdivisions of the thoracic cavity

A

1 mediastinum and 2 pleural cavities

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11
Q

Superior / Inferior mediastinums separated by?

A

Sternal angle

  • 2nd costal cartilage
  • T4-5
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12
Q

Divisions of Inferior mediastinum

A

anterior, middle and posterior

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13
Q

Notable structures at the sternal angle?

A

Aortic arch begins (from ascending) and ends (becomes descending)
Bifurcation of trachea
Bifurcation of Pulmonary Trunk

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14
Q

Great vessels of the heart

A

SVC
Aorta
PT (pulmonary trunk)

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15
Q

Feeding into the SVC?

A

Internal Jugular and subclavian veins –>
Right and Left Brachiocephalic veins –>
SVC

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16
Q

Sections of the Aorta?

A

Ascending (in. MS)
Arch (sup. MS)
Descending / Thoracic Aorta (in. MS)

17
Q

Branching from the brachiocephalic trunk?

A

Right subclavian artery (upper limb)

Right common carotid artery (neck)

18
Q

Rising from the aortic arch?

A
  • Brachiocephalic trunk (right common carotid and right subclavian)
  • Left Common Carotid
  • Left Subclavian Artery
19
Q

Other name for sternal angle?

A

‘angle of louis’

Anatomy 3401 (17 decks)

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