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Muscles > OINAA's > Flashcards

OINAA's Flashcards

1
Q

Trapezius

A

O: medial 1/3 of sup. nuchal line
ext. occipital protuberance
ligamentum nuchae
spinous process c7-t12

I: lateral 1/3 of clavicle
acromion
spine of scapula

A: Upper fibers:
       Bilat: extend head/neck
       Unilat: lat. flex head/neck, same side
                  rotate head/neck, opp. side
                  elevate scapula
                  up rotate scapula  
    Middle fibers:
       ad-d scapula
       stabilize scapula
   Lower fibers:
       depress scapula
       up rotate scapula

N: motor: spinal accessory (XI)
proprioception: c3-c4

Art: transverse cervical a.

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2
Q

Latissimus dorsi

A 
O: Vertebral spine of c7-sacrum
     post. 1/3 iliac crest
     lower 3 or 4 ribs
     thoracolumbar aponeurosis 
     inf. angle scapula (sometimes)

I: floor bicipital groove

A: extends shoulder
ad-d shoulder
int. rotation of shoulder

N: thoracodorsal nerve (c7-c8) from post. cord brachial plexus

Art: thoracodorsal a.

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3
Q

Rhomboid Minor

A

O: inf. end of ligamentum nuchae
spine of vertebral processes c7-t1

I: med. border scapula (at root of spine of scapula)

A: retracts scapula
elevate scapula
down rotate scapula
- depresses glenoid fossa

N: dorsal scapular nerve (c5)

Art: dorsal scapular a.

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4
Q

Rhomboid Major

A

O: Spinous processes t2-t5

I: med. border scapula (inf. angle–> spine)

A: retracts scapula
    elevate scapula
    down rotate scapula
        - depresses glenoid fossa
N: dorsal scapular nerve (c5)

Art: dorsal scapular a.

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5
Q

Teres Major

A

O: inf. angle of scapula (lower 1/3 lat. border)

I: Crest of lesser tubercle of humerus

A: Extend shoulder
retract shoulder
med. rotate shoulder

N: lower subscapular (c5-7)

Art: subscapular a.
circumflex scapular a.

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6
Q

Deltoid

A

O: lat. 1/3 of clavicle
acromion
spine of scapula

I: deltoid tuberosity

A: All:
      ab-d GHJ
    Ant: 
      flex GHJ
      med. rotate shoulder
      horz. ad-d shoulder 
    Post.:
      extend shoulder
      lat. rotate shoulder
      horz. ab-d shoulder

N: axillary c5-6

Art: thoracoacromial a.

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7
Q

Serratus Posterior Superior

A

O: ligamentum nuchae
spine c7 and t1-3

I: ribs 2-5 (lateral to angles)

A: elevates upper ribs

N: branches ventral primary rami spinal nerves t1-t4

Art: post. intercostal a. 1-4 (follow ribs)

accessory respiratory muscle

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8
Q

Serratus Posterior Inferior

A

O: thoracolumbar fascia
spinous process t11-12 and l1-2

I: ribs 9-12 (lateral to angles)

A: pulls down lower ribs

N: branches of ventral primary rami spinal nerves t9-12

Art: lowest post. intercostal a.
subcostal a. (1st two lumbar aa.)

accessory respiratory muscle

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9
Q

Serratus Anterior

A

O: Ext. Surfaces of upper ribs 8-9

I: ant. surface of medial border of scapula

A: Origin Fixed:
Ab-d scapula
up rotate scapula
depress scapula
hold med. border of scapula to ribs
Scapula Fixed:
Elevate thorax during forced inhalation

N: long thoracic c5-c8

Art: circumflex scapular a.

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10
Q

Infraspinatus

A

O: infraspinous fossa of scapula

I: greater tubercle of humerus

A: lat. rotate shoulder
ad-d shoulder
stabilize head of humerus

N: subscapular c4-c6

Art: suprascapular a.
circumflex scapular a.

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11
Q

Supraspinatus

A

O: Supraspinous fossa of scapula

I: greater tubercle of humerus

A: stabilize head of humerus
ab-d shoulder

N: suprascapular c4-c6

Art: suprascapular a.

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12
Q

Semispinalis Capitis

A

O: transverse processes c7-t12

I: back of skull between nuchal lines

A: extends trunk
lat. bend trunk
rotates trunk to opposite side

N: dorsal primary rami spinal nerves c1-t12

Art: deep cervical a.
post. intercostal a.
subcostal a.
lumbar a.

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13
Q

Semispinalis Cervicis

A

O: transverse processes c7-t12

I: spine of vertebrae 4-6

A: extends trunk
lat. bend trunk
rotates trunk to opposite side

N: dorsal primary rami spinal nerves c1-t12

Art: deep cervical a.
post. intercostal a.
subcostal a.
lumbar a.

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14
Q

Pectoralis Major

A

O: med. half of clavicle
sternum
cartilage of 1-6 ribs

I: Crest of greater tubercle of humerus

A: All fibers:
      ad-d shoulder
      med. rotate shoulder
      elevate thorax during forced inhalation
    Upper fibers:
      flex shoulder
      horz ad-d shoulder
   Lower fibers:
      extend shoulder

N: Upper fibers:
lat. pectoral c5-7
Lower fibers:
med/lat pectoral c6-8, t1

Art: pec branch of thoracoacromial trunk

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15
Q

Pectoralis Minor

A

O: 3-5 ribs

I: Med. surface of coracoid process

A: depressed scapula
ab-d scapula
down rotate scapula

N: medial pectoral w/ fibers from communicating branch of lat. pectoral c6-8, t1

Art: Pectoral branch of the thoracoacromial trunk

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16
Q

Spinalis

A

O: spinous process @ inf. vertebral levels

I: spinous processes @ sup. vertebral levels (base of skull)

A: extend/ lat. bend trunk/neck

N: dorsal primary rami spinal nerve c2-l3

Art: deep cervical a.
post. intercostal a.
subcostal a.
lumbar a.

17
Q

Subscapularis

A

O: subscapular fossa of scapula

I: lesser tubercle of humerus

A: med. rotate shoulder
stabilize head of humerus

N: upper/lower subscapular c5-7

Art: subscapular a.

18
Q

Levator Scapulae

A

O: transverse process c1-4

I: med. border scapula (sup. angle –> spine)

A: Unilat:
      elevates scapula
      down rotate scapula
      lat. flex head/neck
      rotate head/neck, same side
    Bilat:
       extend head/neck

N: dorsal scapular nerve (C5)
upper LS:
branches of c3-4

Art: dorsal scapular a.

19
Q

Teres Minor

A

O: upper 2/3 lat. border of scapula

I: greater tubercle of humerus

A: lat. rotate shoulder
ad-d shoulder
stabilize head of humerus

N: Axillary c5-6

Art: subscauplar a.
circumflex scapular aa.

20
Q

Splenius Capitis

A

O: ligamentum nuchae
spines c7-t6

I: mastoid process
lat. end sup. nuchal line

A: extends/lat. bend neck/head
rotates head to same side

N: dorsal primary rami spinal nerves c2-6

Art: deep cervical a.
post. intercostal aa.

21
Q

Splenius Cervicis

A

O: ligamentum nuchae
spines c7- t6

I: post. tubercles transverse processes c1-c3

A: extends/lat. bend neck/head
rotates head to same side

N: dorsal primary rami spinal nerves c2-c6

Art: deep cervical a.
post. intercostal a.

22
Q

Iliocostalis

A

O: iliac crest
sacrum

I: angles of ribs

A: extend/lat. bend trunk/neck

N: dorsal primary rami spinal nerves c4-s5

Art: deep cervical a.
post. intercostal a.
subcostal a.
lumbar a.

23
Q

Longissimus

A

O: transverse process @ inf. vertebral levels

P: transverse processes @ sup. vertebral levels
mastoid process

A: extend/lat. bend trunk/neck/head

N: dorsal primary rami spinal nerves c1-s1

Art: deep cervical a.
post. intercostal a.
subcostal a.
lumbar a.

24
Q

Biceps Brachii

A

O: Short Head:
coracoid process
Long Head:
supraglenoid tubercle of scapula

I: tuberosity of radius
aponeurosis of bicep brachii

A: flex elbow
supinate forearm
flex shoulder

N: musculocutaneous c5,6

Art: muscular branches of brachial a.

25
Q

Triceps Brachii

A

O: Long Head:
infraglenoid tubercle of scapula
Lateral Head:
post. surface of proximal half of humerus
Medial Head:
Post. surface of distal half of humerus

I: olecranon process of ulna

A: All heads:
        extend elbow
    Long Head:
        extend shoulder
        ad-d shoulder

N: radial c6-8 and t1

Art: branches of deep brachial a.

26
Q

Coracobrachialis

A

O: coracoid process of scapula

I: med. surface of mid-humeral shaft

A: flex shoulder
ad-d shoulder

N: musculocutaneous c6-7

Art: muscular branches of brachial a.

Muscles (2 decks)

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