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Gross Anatomy 1 > OIAN-upper limb > Flashcards

OIAN-upper limb Flashcards

To learn all OIAN's for upper limb

1
Q

Deltoid

A

Origin:

  • Lateral third of clavicle
  • Acromion
  • Spine of scapula

I: Deltoid tuberosity of humerus

N: Axillary Nerve (C5, C6)

Action:

  • ANT: Flex, intern. rot.
  • MID: Abduction
  • POST: Extention, extern. rot.
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2
Q

Supraspinatus

A

O: Supraspinous fossa

I: Superior facet of greater tubercle

N: Suprascapular (C4, C5, C6)

Action:
-Initiates Abd (30 deg)

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3
Q

Infraspinatus

A

O: Infraspinatus fossa

I: Middle facet of greater tubercle

N: Suprascpular (C5, C6)

Action:
-External rotation

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4
Q

Teres minor

A

O: Middle part of lateral border of scap

I: Inferior facet of greater tubercle

N: Axillary (C5, C6)

Action:
-External rotation

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5
Q

Teres major

A

O: Posterior side of inferior angle of scap

I: Medial lip of bicipital groove

N: Lower Subscapular (C5, C6)

Action:
-Adduction
Internal rotation

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6
Q

Subscapularis

A

O: Subscapular fossa

I: Lesser tubercle

N: Upper & Lower Subscapular (C5, C6, C7)

Action:

  • Internal rotation
  • Helps hold humeral head in place
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7
Q

Pectoralis major

A

Origin:

  • Clavicular fibers: anterior surface os clavicle
  • Sternal fibers: anterior surface of sternum, ribs 1-6

I: Lateral lip of bicipital groove

Nerves:

  • Lateral pectoral
  • Medial pectoral nerve
  • Clavicular head (C5, C6)
  • Sternocostal head (C7, C8, T1)
Action:
-Adduction
-Internal rotation
Clavicular head: flexes
Sternocostal head: extends
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8
Q

Pectoralis minor

A

O: 3rd-5th ribs

I: Medial border/superior surgace of CORACOID PROCESS

N: Medial Pectoral (C8, T1)

Action:
- Stabilization of scap

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9
Q

Subclavius

A

O: Junction of 1st rib and cartilage

I: Inferior surface of middle clavicle

N: Subclavius (C5, C6)

A: anchors & depresses clavicle

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10
Q

Sarratus Anterior

A

O: Outside surface of lateral parts of rib 1-8

I: Anterior surface of medial border of scap

N: Long thoracic (C5, C6, C7)

Action:

  • protraction
  • stabilization
  • rotation of scap
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11
Q

Trapezius

A

Oirigin:

  • superior nuchal line
  • nuchal ligament
  • occiput
  • C7-T12 SP

Insertion:

  • Lateral clavicle
  • Acromion
  • Spine of scap

N: Spinal accessory (CN XI)

Action:

  • Upper: elevation
  • Middle: retraction
  • Lower: depression
  • upper & lower = upwd rotation
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12
Q

Latissimus dorsi

A

Oirigin:

  • SP T7-T12
  • Thoracolumbar fascia
  • Iliac crest
  • last 4 ribs

I: Floor of bicipital groove

N: Thoracodorsal (C6, C7, C8)

Action:

  • Adduction
  • Extension
  • Internal rotation
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13
Q

Levator Scapulae

A

O: posterior tubercles of TP’s C1- C4

I: Above root of scapular spine

N: Dorsal scapular nerve (C3, C4, C5)

Action:

  • Elevation of scap
  • Dwnd rotation
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14
Q

Rhomboid minor

A

O:

  • Nuchal ligament
  • SP C7-T1

I: Medial end of scap spine

N: Dorsal scapular (C4, C5)

A:

  • retraction
  • Dwnd rotation
  • Stabilize
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15
Q

Rhomboid major:

A

O:
-SP T2-T5

I: medial border of scap:
-from spine to inferior angle

N: Dorsal scapular (C4, C5)

A:

  • retraction
  • Dwnd rotation
  • Stabilize
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16
Q

Biceps brachii

A

Origin:
short head: Coracoid process
long head: Supraglenoid fossa

I: Tuberosity of radius

N: Musculocutaneous nerve (C5, C6, C7)

A:

  • supination of forearm
  • flexion (only when supinated)
  • short head helps resist dislxn
17
Q

Coracobrachialis

A

O: Coracoid process

I: middle of medial humerus

N: Musculocutaneous

A:

  • Helps flex and adduct arm
  • resists dislocation
18
Q

Brachialis

A

O: Distal half of anterior humerus

I: Coronois process & tuberosity of ulna

N:

  • Musculocutaneous (C5, C6)
  • Radial (C5, C7)

A: Flexion in all position

19
Q

Triceps brachii

A

O:

  • Long head: infraglenoid fossa
  • Lateral head: posterior humerus above radial groove
  • Medial head: posterior humerus below radial groove

I: Proximal end of olecranon

N: Radial (C6, C7, C8)

A:

  • Extension of forearm
  • long head resists dislxn
  • important during adduction
20
Q

Anconeus

A

O: Lateral epicondyle

I:

  • Lateral surface of olecranon
  • superior part of posterior ulna

N: Radial (C7, C8, T1)

A:

  • Assists in extending forearm
  • Stabilizes elbow joint
  • Abducts ulna during pronation

Gross Anatomy 1 (1 decks)

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