Thoracic Limb Muscle Functions Flashcards
CUTANEUS TRUNCI M.
Twitches skin
SUPERFICIAL PECTORAL M.
Adduct limb
DEEP PECTORAL M.
Adduct limb
BRACHIOCEPHALICUS M.
Extend shoulder joint; draw head and neck to the side
OMOTRANSVERSARIUS M.
Advance the limb; flex neck laterally
SERRATUS VENTRALIS M.
Support the trunk
TRAPEZIUS M.
Draw scapula dorsally (elevate scapula/limb)
RHOMBOIDEUS M.
Draw scapula dorsally
(elevate scapula/limb)
LATISSIMUS DORSI M.
Flex shoulder joint; draw free limb caudally, as in digging action.
STERNOCEPHALICUS M.
To draw the head and neck to the side
STERNOHYOIDEUS M.
Pull tongue & larynx caudally
OMOHYOIDEUS M.
‘Backstop muscle’ of jugular groove in cranial neck.
CUTANEUS COLLI M.
Covers external jugular v. in caudal neck.
SUPRASPINATUS M.
Extend shoulder joint/shoulder stabilization
STERNOTHYROIDEUS M.
Pull tongue & larynx caudally
SUBCLAVIUS M.
Extra pectoral muscle.
Infraspinatus m. bursa
Protect tendon as passing over bone
INFRASPINATUS M.
Extend shoulder joint/shoulder stabilization
SUBSCAPULARIS M.
Extend shoulder joint/shoulder stabilization
DELTOIDEUS M.
Flex shoulder joint
TERES MINOR M.
Flex shoulder joint; rotate shoulder laterally
TENSOR FASCIAE ANTEBRACHII M.
Extend elbow joint (weak)
TRICEPS BRACHII M. (LONG HEAD)
Extend elbow joint (secondary: flex shoulder joint)
TERES MAJOR M.
Flex shoulder joint
TRICEPS BRACHII M. (LATERAL HEAD)
Extend elbow joint
TRICEPS BRACHII M. (ACCESSORY HEAD)
Extend elbow joint
TRICEPS BRACHII M. (MEDIAL HEAD)
Extend elbow joint
BICEPS BRACHII M.
Flex elbow joint (secondary: extend shoulder joint)
Intertubercular (bicipital) bursa
Protects tendon passing over point of shoulder
BRACHIALIS M.
Flex elbow joint
EXTENSOR CARPI RADIALIS M.
Extend carpus
COMMON DIGITAL EXTENSOR M.
Extend digits and carpus
LATERAL DIGITAL EXTENSOR M.
Extend digits and carpus
ABDUCTOR DIGITI I LONGUS M.(ABDUCTOR POLLICIS LONGUS)
Abduct first digit (as exists) and extend carpus
ULNARIS LATERALIS M.
Flex carpus; abduct manus at carpus
Extensor retinaculum
Binds down extensor tendons
FLEXOR CARPI RADIALIS M.
Flex carpus
SUPERFICIAL DIGITAL FLEXOR M.
Flex proximal interphalangeal joints; flex carpus and metacarpophalangeal joints)
DEEP DIGITAL FLEXOR M.
(Humeral, Ulnar, Radial heads)
Flex digits and carpus
Flexor retinaculum
Binds digital flexors within carpal canal
FLEXOR CARPI ULNARIS M. (Humeral and Ulnar heads)
Flex carpus
BRACHIORADIALIS M
Supination
PRONATOR TERES M.
Pronation of the distal limb (and flex elbow)
SUPINATOR M.
Supination of distal limb (and flex elbow)
PRONATOR QUADRATUS M.
Pronation of the distal limb
