OIAN for the final Flashcards
(21 cards)
levator labii
O: zygomatic, lacrimal, and superioris maxillary bones
I: upper lip
A: raise upper lip
N: facial n.
buccinator
O: maxilla, and mandible
I: commissure of mouth
A: retract the commissure of the mouth and flatten the cheeks
N: facial n.
masseter
O: facial crest and zygomatic arch
I: ramus of mandible
A: close the mouth
N: trigeminal (mandibular)
occipitomandibularis
O: jugular process of occipital bone
I: caudal bordr of mandible
A: open the mouth
N: facial n.
cricoarytenoideus dorsalis
O: lamina of cricoid cartilage
I: arytenoid cartilage, muscular process
A: open the glottis
N: recurrent laryngeal n.
cricoarytenoideus lateralis
O: arch of cricoid cartilage
I: arytenoid cartilage (muscular process)
A: close the glottis
N: recurrent laryngeal n.
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.
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.
deltoideus
O: spine of scapula and aponeurosis over infraspinatus muscle
I: deltoid tuberosity
A: flex the shoulder and abduct the arm
N: axillary n.
subscapularis
O: subscapular fossa
I: lesser tubercle of humerus
A: adduct the humerus, medial shoulder stabilizer
N: subscapular and axillary nn.
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)
triceps brachii: long head
O: caudal border of the scapula
I: olecranon
A: extend the elbow and flex the shoulder
N: radial n.
triceps brachii: lateral head
O: lateral surface of humerus
I: olecranon
A: extend the elbow
N: radial n.
triceps brachii: medial head
O: medial surface of humerus
I: olecranon
A: extend the elbow
N: radial n.
extensor carpii radialis
O: lateral epicondyle of humerus
I: metacarpal tuberosity MC 3
A: extend the carpus and flex the elbow
N: radial n.
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.
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.
flexor carpi radialis
O: medial epicondyle of humerus
I: second metacarpal bone
A: flex the carpus and extend the elbow
N: median n.
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.
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.
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)
