2nd Quarter Muscles flashcards |

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Extensor carpi radialis

Stay apparatus, prevents flexion of carpal joint when weighted.

Biceps Brachii

Extends the shoulder joint and flexes the elbow joint

Brachialis

Flexes the elbow joint

Ulnaris lateralis

Flexes the carpus

Gastrocnemius

Flexes the stifle and extension of the hock (tarsus bones)

Biceps femoris

Caudal part flexes the stifle joint. Cranial part extends the hip, stifle, and hock joints. Whole muscle contributes to the abduction of the limb

Semimembranosus

Limb planted: extends the hip and stifle joints
Unplanted: Retracts, adducts, and rotates the limb inward

Semitendinosus

Limb planted: extends the hip, stifle, and hock joints
Not planted: flexes the stifle, retracts, and adducts the limb

Quadriceps femoris

Agonist to the hamstrings. Extend stifle joint

Quadratus femoris

Adducts the thigh, extends the hip, lateral rotation of the hind leg

Tensor fasciae latae

Helps to flex the hip and extend the femoropatellar joint

Vastus lateralis

Extends the stifle joint

Gluteus superficialis

Flexes the hip and protracts and abducts hind limb

Gluteus medius

Extends the hip and abducts and medially rotates the limb

Gluteus profundus

Assists in the extension of the hip, the abduction and medial rotation of the hind leg

Accessory gluteal

Extends the hip, contributes to the abduction of the limb

Rectus femoris

...

Quadratus lumborum

Bilaterally, stabilizes the lumbo-sacral area. Unilaterally, produces flexion

Iliacus

Bilaterally flexes the hip joint of the lumbo-sacral and sacro-iliac joints. Unilaterally protracts the hind limb, rotates it outward

Psoas

Bilaterally, flexes the hip joint of the lumbo-sacral and sacro-iliac joints. Unilaterally causes rotation and flexion of the lumbar spine

Popliteus

Causes capsule of the stifle joint to be raised during flexion of the stifle

Sartorius

Flexion of the hip, protracts and adducts the hind limb

Gracilis

Adduction of the hind leg. Assists in flexion of the stifle and extension of the hip and hock joints

Pectineus

Adduction of the hind leg and assists in the flexion of the hip joint

Adductor

Adduction and retraction of the hind leg. It assists in the extension of the hip joint

Internal obturator

Causes hind leg to rotate laterally

External obturator

Causes lateral rotation of the hind limb. Contributes to adduction of the hind

Gemelli

Causes leg to rotate laterally

Tibialis cranialis

Flexion of the tarsus bones. Lateral rotation of the hoof

Long digital extensor

Extension of the digits and flexion of the tarsus bones

Lateral digital extensor

Extension of the digits, flexion of the tarsus

Soleus

Assists gastrocnemius in flexion of the stifle and extension of the tarsus bones

Superficial digital flexor

Flexion of the digits and extension of the tarsus bones

Deep digital flexor

Causes flexion of the digits and extends the hock joint

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