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ANATOMY > FRAMEWORK OF THORAX > Flashcards

FRAMEWORK OF THORAX Flashcards

1
Q

What consists the Thorax region?

A
  1. Thoracic cavity
  2. Primary organs of cardio-respiratory system
  3. Thoracic wall
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2
Q

3 Compartments of Thoracic cavity:

A
  1. Central mediastinum
  2. Right & Left pulmonary cavity
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3
Q

What occupies the central mediastinum?

A

Heart & Great Vessels

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4
Q

What occupies the right and left cavities?

A

Lungs

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5
Q

It support the thorax, provides attachment to the muscles of thorax, upper extremities, back and diaphragm

A

Thoracic wall

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6
Q

It is kidney shaped with transverse diameter is greater than the anteroposterior diameter, the ribs is place obliquely

A

ADULT THORAX

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7
Q

What are the framework of thorax?

A

Sternum, 12 Thoracic vertebrae, 12 pair of ribs, and their costal cartilages

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8
Q

Circular in shape w/ transverse diameter equal to anteroposterior diameter, the ribs placed horizontally

A

Infant Thorax

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9
Q

Coverings of the Thorax

A
  • Skin
  • Superficial fascia
  • Deep fascia
  • Extrinsic muscles (upperlimb ms, abdomen ms, back ms)
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10
Q

Muscle of the Thorax?

A
  1. Serratus Posterior Posterior
  2. Serratus Posterior Inferior
  3. Levator Costarum
  4. Intercostal Muscles
    • External Intercostal Muscle
    • Internal Intercostal Muscle
    • Transverse Thoracic Muscles
      > Innermost Intercostal
      > Subcostalis
      > Sternocostalis
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11
Q

Origin and Insertion of Serratus Posterior Superior?

A

O: Nuchal ligament, C7 - T3 spinous process
I: Superior border of 2nd - 4th ribs

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12
Q

Innervation & Action of Serratus Posterior Superior

A

N: 2nd-5th intercostal nerve
A: Elevate ribs

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13
Q

Origin and Insertion of Serratus Posterior Inferior

A

O: T11 - L2 spinous process
I: Inferior border of 8th - 12th ribs

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14
Q

Innervation and Action of Serratus Posterior Inferior

A

N: Anterior rami to T9-T12 thoracic spinal nerve
A: Depress ribs

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15
Q

Origin and Insertion of Levator Costarum

A

O: C7-T11 transverse process
I: subjacent ribs between tubercle & angles

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16
Q

Innervation and action of Levator Costarum

A

N: Posterior rami to C8-T11 nerves
A: Elevate ribs

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17
Q

Origin and Insertion of External Intercostal

A

O: Lower border of ribs
I: Upper border of rib below (outer lip)

18
Q

Origin and Insertion of Internal Intercostal

A

O: Lower border ribs
I: Upper border of rib below (inner lip)

18
Q

Innervation and action of External Intercostal

A

N: Intercostal nerve in same space
A: Elevates ribs during inspiration

19
Q

Innervation and action of Internal Intercostal

A

N: Intercostal nerve of same space
A: Depress rib (costal part); elevate ribs (interchondral part) during expiration

20
Q

Origin and Insertion of Innermost Intercostal

A

O: Inner surface of rib above
I: Inner surface of rib below

21
Q

Innervation and action of Innermost Intercostal

A

N: Intercostal nerve of same space
A: Elevate rib ( interchondral part) ; depress ribs (costal part) during expiration

22
Q

Origin and Insertion of Subcostalis

A

O: Inner surface of lower rib near angle
I: Upper border of 2nd or 3rd rib below

23
Q

Innervation and action of Subcostalis

A

N: Intercostal nerve of same space
A: Elevates & depress ribs

24
Q

Origin and Insertion of Sternocostalis

A

O: lower 1/3 posterior surface of sternum body; posterior surface of xiphoid process ; posterior surface of costal cartilage
I: 2nd - 6th ribs costal cartilages

25
Q

Innervation and action of Sternocostalis

A

N: intercostal nerve
A: Draw 2nd to 6th ribs downward

26
Q

Space between 2 adjacent ribs

A

Intercostal space

27
Q

3rd - 6th space are called?

A

Typical Intercostal space

28
Q

Contents of Typical Intercostal Space?

A
  1. 3 intercostal muscles
  2. The neurovascular bundle
    • Intercostal vein
    • Intercostal artery
    • Intercostal nerve
  3. Intercostal lymph vessels and nodes
29
Q

Lies between internal and innermost intercostal muscles

A

Neurovascular bundle

30
Q

Intercostal Nerves divided into:

A

Anterior and Posterior rami

31
Q

Anterior primary rami is from _________ and it is called as _______

A

T1-T11 ; intercostal nerve

32
Q

Posterior primary rami is from ______ and called as _____

A

T12 ; subcostal nerve
- it runs in the abdominal wall

33
Q

Internal intercostal is split by ________ dividing into Internal Intercostal proper and Innermost intercostal

A

Intercostal nerve and vessels

34
Q

Direction of Fibers of external intercostal ms

A

Downward, forward, medially

35
Q

Direction of fibers of Internal Intercostal ms

A

Downward, backward , laterally

36
Q

Can be seen coursing vertically downward lateral to the sternum at each side, and ends at 6th intercostal space

A

Intercostal Mammary Artery

37
Q

Branches of Intercostal Mammary A

A

Perforating and anterior intercostals

38
Q

Terminal Branch of Intercostal Mammary A

A

Superior Epigastric and Musculophrenic arteries

39
Q

A fibrous fascia holding the pleural reflection into its convex upper surface

A

phrenico-pleural fascia

40
Q

It begins at the level of 3rd costal cartilage; ascends at the inlet of thorax and ends by emptying into the innominate vein

A

Intercostal mammary vein

ANATOMY (6 decks)

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