Lecture 14 - Muscles Flashcards
What is the origin of tibialis cranialis?
Extensor groove and adjacent articular margin of tibia; lateral edge of cranial tibial border
What is the insertion of tibialis cranialis?
Plantar surface of base of metatarsals I and II
What is the nerve of tibialis cranialis?
Fibular n.
What is the action of tibialis cranialis?
Flex tarsocrural jt; rotate paw laterally
What is the origin of extensor digitorum longus?
Extensor fossa of femur
What is the insertion of extensor digitorum longus?
Extensor processes of distal phalanges II-V
What is the nerve of extensor digitorum longus?
Fibular n.
What is the action of extensor digitorum longus?
Extend digits; flex tarsus
What is the origin of fibularis longus?
Lateral condyle of tibia; proximal end of fibula, lateral epicondyle of femur
What is the insertion of fibularis longus?
Fourth tarsal bone; plantar aspect of base od metatarsals
What is the nerve of fibularis longus?
FIbular n.
What is the action of fibularis longus?
Flex tarsus; rotate paw medially
What is the origin of fibularis brevis?
Lateral surface of distal 2/3 of tibia and fibula
What is the insertion of fibularis brevis?
Base of MT V
What is the action of fibularis brevis?
Flex tarsus
What is the nerve of fibularis brevis?
Fibular n.
What is the origin of fibularis teritius?
Extensor fossa w/ extensor digitorum longus
What is the insertion of fibularis teritius?
Bifurcates at hock; lateral and dorsal branch
What is the nerve of fibularis teritius?
Fibular n.
What is the action of fibularis teritius?
Connects actions of stifle and hock so they can extend together
What is the origin of extensor digitorium lateralis?
Extensor fossa of femur
What is the insertion of extensor digitorium lateralis?
Extensor processes of distal phalanges of digits II-V
What is the nerve of extensor digitorium lateralis?
Fibular N.
What is the action of extensor digitorium lateralis?
Extend digits; flex tarsus
What is the origin of gastrocnemium?
Medial and lateral supracondylar tuberosities of femur
What is the insertion of gastrocnemium?
Proximal dorsal surface of tuber calcanei via common calcaneal tendon
What is the nerve of gastrocnemium?
Tibial n.
What is the action of gastrocnemium?
Extend tarsus; flex stifle
What is the origin of flexordigitorum superficialis?
Lateral supracondylar tuberosity of femur
What is the insertion of flexordigitorum superficialis?
Tuber calcanei via common calcaneal tendon; base of middle phalanges of digits II to V
What is the nerve of flexordigitorum superficialis?
Tibial n.
What is the action of flexordigitorum superficialis?
Flex first two digital joints of four principal digits; flex stifle; extend tarsus
What is the origin of flexordigitorum medialis/lateralis?
M: Fibular head and popliteal line
L: Caudal aspect of proximal 2/3 of tibia, proximal 1/2 of fibula
What is the insertion of flexordigitorum medialis?
Flexor tubercle on plantar surface of base of each distal phalange
What is the nerve of flexordigitorum medialis?
Tibial n.
What is the action of flexordigitorum medialis?
Flex digits; Extend tarsus
What is the origin of tibialis caudalis?
Proximal end of fibula
What is the of insertion of tibialis caudalis?
Medial ligament tissue of tarsus
What is the nerve of tibialis caudalis?
Tibial n.
What is the action of tibialis caudalis?
Extend tarsus; lateral rotation of pes
What is the origin of soleus?
Fibular head
What is the insertion of soleus?
Tuber calcanei via common calcaneal tendon
What is the nerve of soleus?
Tibial n.
What is the action of soleus?
Assist gastrocnemius
