Muscle OIAN Flashcards
(19 cards)
Buccinator
O: Maxilla and mandible
I: Commissure of mouth
A: Retract the commissure of the mouth and flatten cheeks
N: Facial n.
Masseter
O: Facial crest and zygomatic arch
I: Ramus of mandible
A: Close mouth
N: Trigeminal (Mandibular) n.
Occipitomandibularis
O: Jugular process of occipital bone
I: Caudal border of mandible
A: Open mouth
N: Facial n.
Criocoarytenoideus dorsalis
O: Lamina of cricoid cartilage
I: Arytenoid cartilage (muscular process)
A: Open glottis
N: Recurrent laryngeal n.
Cricoarytenoideus lateralis
O: Arch of cricoid cartilage
I: Arytenoid cartilage (muscular process)
A: close glottis
N: Recurrent laryngeal n.
Supraspinatus
O: Supraspinous fossa and spine of scapula
I: Greater and lesser tubercle of humerus
A: Extend shoulder, cranial soulder stabilizer
N: Suprascapular n.
Infraspinatus
O: Infraspinous fossa
I: Greater tubercle of humerus
A: Abduct arm
N: Suprascapular n.
Deltoideus
O: Spine of scapula and aponeurosis over infraspinatus muscle
I: Deltoid tuberosity
A: Flex shoulder and abduct arm
N: Axillary n
Subscapularis
O: Subscapular fossa
I: Lesser tubercle of humerus
A: Adduct humerus, medial shoulder stabilizer
N: Subscapular and axillary n
Biceps brachii
O: Supraglenoid tubercle
I: Radial tuberosity, tendon of extensor carpi radialis via lacertus fibrosis
A: Flex elbow, extend the shoulder and carpus
N: Musculocutaneous n
Triceps brachii
O: Long- Caudal border of scapula, Lateral- lateral surface of humerus, medial surface of humerus
I: Olecranon
A: Extend elbow (long- also flex shoulder)
N: Radial n.
Extensor carpi radialis
O: Lateral epicondyle of humerus
I: Metacarpal tuberosity MC3
A: Extend carpus, flex elbow
N: Radial n
Ulnaris lateralis
O: Lateral epicondyle of humerus
I: Accessory carpal bone C4 and MC4
A: Flex carpus and extend elbow
N: Radial n
Common digital extensor
O: Lateral epicondyle of humerus, lateral tuberosity of radius, lateral surface of body of ulna
I: Extensor process of P3
A: Extend digit and carpus, flex elbow
N: Radial n
Flexor carpi radialis
O: Medial epicondyle of humerus
I: Second metacarpal bone
A: Flex carpus and extend elbow
N: Median n
Superficial digital flexor
O: Medial epicondyle of humerus and caudal surface of radius
I: Proximal part of P2 and distal part of P3
A: Flex digit and carpus, extend elbow
N: Ulnar n
Deep digital flexor
O: Medial epicondyle of humerus, olecranon, caudal surface of radius
I: Flexor surface of P3
A: Flex digit and carpus, extend elbow
N: Median and ulnar n
Interosseus
O: Palmar surface of metacarpal 3, distal row of carpal bones
I: Abaxial surfaces of proximal sesmoids and tendon of common digital extensor
A: Support fetlock (prevent overtextension)
N: Palmar metacarpal n
Levator labii
O: Zygomatic, lacrimal, and superioris maxillary bones
I: Upper lip
A: Raise upper lip
N: Facial n.
