OIAN for the final Flashcards Preview

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Flashcards in OIAN for the final Deck (21):
1

levator labii

O: zygomatic, lacrimal, and superioris maxillary bones

I: upper lip

A: raise upper lip

N: facial n.

2

buccinator

O: maxilla, and mandible

I: commissure of mouth

A: retract the commissure of the mouth and flatten the cheeks

N: facial n.

3

masseter

O: facial crest and zygomatic arch

I: ramus of mandible

A: close the mouth

N: trigeminal (mandibular)

4

occipitomandibularis

O: jugular process of occipital bone

I: caudal bordr of mandible

A: open the mouth

N: facial n.

5

cricoarytenoideus dorsalis

O: lamina of cricoid cartilage

I: arytenoid cartilage, muscular process

A: open the glottis

N: recurrent laryngeal n.

6

cricoarytenoideus lateralis

O: arch of cricoid cartilage

I: arytenoid cartilage (muscular process)

A: close the glottis

N: recurrent laryngeal n.

7

supraspinatus

O: supraspinous fossa and spine of scapula

I: greater and lesser tubercles of humerus

A: extend the shoulder, cranial shoulder stabilizer

N: suprascapular n.

8

infraspinatus

O: infraspinatus fossa

I: greater tubercle of the humerus

A: abduct the arm (acts as a lateral collateral ligament of hte shoulder joint)

N: suprascapular n.

9

deltoideus

O: spine of scapula and aponeurosis over infraspinatus muscle

I: deltoid tuberosity

A: flex the shoulder and abduct the arm

N: axillary n.

10

subscapularis

O: subscapular fossa

I: lesser tubercle of humerus

A: adduct the humerus, medial shoulder stabilizer

N: subscapular and axillary nn.

11

biceps brachii

O: supraglenoid tubercle

I: radial tuberoisty and tendon of extensor carpi radialis via lacertus fibrosus

A: flex the elbow, extend the shoulder and carpus

N: musculocutaneous n. (proximal branch)

12

triceps brachii: long head

O: caudal border of the scapula

I: olecranon

A: extend the elbow and flex the shoulder

N: radial n.

13

triceps brachii: lateral head

O: lateral surface of humerus

I: olecranon

A: extend the elbow

N: radial n.

14

triceps brachii: medial head

O: medial surface of humerus

I: olecranon

A: extend the elbow

N: radial n.

15

extensor carpii radialis

O: lateral epicondyle of humerus

I: metacarpal tuberosity MC 3

A: extend the carpus and flex the elbow

N: radial n.

16

ulnaris lateralis

O: lateral epicondyle of humerus

I: accessory carpal bone C4 and MC 4

A: flex the carpus and extend the elbow

N: radial n.

17

common digital extensor

O: lateral epicondyle of humerus, lateral tuberosity of radius, lateral surface of body of the ulna

I: extensor process of third phalanx

A: extend the digit and carpus, but flex the elbow

N: radial n.

18

flexor carpi radialis

O: medial epicondyle of humerus

I: second metacarpal bone

A: flex the carpus and extend the elbow

N: median n.

19

superficial digital flexor

O: medial epicondyle of humerus and caudal surface of radius

I: proximal part of second phalanx and distal part of first phalanx

A: flex the digit and carpus and extend the elbow

N: ulnar n.

20

deep digital flexor

O: medial epicondyle of the humerus, olecranon, caudal surface of the radius

I: flexor surface of third phalanx

A: flex the digit and carpus and extend the elbow

N: median and ulnar nn.

21

interosseus (suspensory ligament)

O: palmar surface of third metacarpal bone and distal row of carpal bones

I: abaxial surfaces of proximal sesmoids and tendon of common digital extensor m.

A: support the fetlock (prevent overextension)

N: palmar metacarpal nn. (sensory only)

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