GA1 - OIANs Flashcards

1
Q

Pec major origin

A

O: anterior surface of medial 1/2 of clavicle; anterior surface of sternum; costal cartilage of ribs 1-6, aponeurosis external oblique muscle

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2
Q

Pec major insertion

A

I: lateral lip of intertubercular sulcus of humerus

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3
Q

Pec major action

A

A: adductor and medially rotates humorous; draws scapula anteriorly and inferiorly

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4
Q

Pec major nerve innervation

A

N: medial and lateral pectoral nn. (C5-T1)

  • clavicular head: C5,C6
  • sternocostal head: C7,C8,T1
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5
Q

Pec major blood supply

A

Pectoral branch of thoracoacromial artery

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6
Q

Pec minor origin

A

O: anterior surface of 3rd-5th ribs

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7
Q

Pec minor insertion

A

I: medial border and superior surface coracoid process of scapula

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8
Q

Pec minor action

A

A: stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall

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9
Q

Pec minor nerve

A

N: medial pectoral nn. (C8-T1)

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10
Q

Pec minor blood supply

A

Pectoral branch from thoracoacromial artery

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11
Q

Serratus Anterior origin

A

O: external surfaces of lateral parts of 1-8 ribs

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12
Q

Serratus Anterior insertion

A

I: anterior surface of medial border of scapula

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13
Q

serratus anterior action

A

A: protracts scapula and keeps it against thoracic wall; rotation of scapula

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14
Q

serratus anterior nerve

A

N: long thoracic n. (C5-C7)

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15
Q

serratus anterior blood supply

A

klj

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16
Q

subcalvian origin

A

O: junction of 1st rib and its costal cartilage

17
Q

subclavius insertion

A

I: inferior surface of middle third of clavicle

18
Q

subclavius action

A

A: anchors and depresses clavicle

19
Q

subclavius nerve

A

N: n to subvclavius (C5,C6)

20
Q

subclavius blood supply

21
Q

external intercostal origin and insertion

A

O: inferior border of ribs
I: superior border of ribs below

22
Q

external intercostal action

A

Elevate ribs during forces inspiration

23
Q

external intercostal nerve

A

intercostal nerves

24
Q

external intercostal blood supply

25
transversus thoracis origin
Posterior surface of lower sternum
26
transversus thoracis insertion
internal surface of costal cartilages 2-6
27
transverse thoracis action
Weakly depresses ribs (expiration). Proprioception?
28
transverse thoracis nerve
intercostal nerves 2-7
29
transverse thoracis blood supply
l
30
Internal/innermost intercostals origin and insertion
O: inferior border of ribs I: superior border of ribs below
31
Internal/innermost intercostals action
DURING ACTIVE RESPIRATION: Interosseous: depresses ribs Interchondral: elevates ribs
32
Internal/innermost intercostals nerve
intercostal n. 1-11
33
Internal/innermost intercostals blood supply
l
34
subcostal origin and insertion
O: Internal surface of lower ribs near their angles I: superior borders of 2-3 ribs below
35
subcostal action
DURING ACTIVE RESPIRATION: Interosseous: depresses ribs Interchondral: elevates ribs
36
subcostal nerve
variable lower intercostal n.
37
subcostal blood supply
l