Lecture 14 - Muscles

Question 1

What is the origin of tibialis cranialis?

Answer 1

Extensor groove and adjacent articular margin of tibia; lateral edge of cranial tibial border

Question 2

What is the insertion of tibialis cranialis?

Answer 2

Plantar surface of base of metatarsals I and II

Question 3

What is the nerve of tibialis cranialis?

Answer 3

Fibular n.

Question 4

What is the action of tibialis cranialis?

Answer 4

Flex tarsocrural jt; rotate paw laterally

Question 5

What is the origin of extensor digitorum longus?

Answer 5

Extensor fossa of femur

Question 6

What is the insertion of extensor digitorum longus?

Answer 6

Extensor processes of distal phalanges II-V

Question 7

What is the nerve of extensor digitorum longus?

Answer 7

Fibular n.

Question 8

What is the action of extensor digitorum longus?

Answer 8

Extend digits; flex tarsus

Question 9

What is the origin of fibularis longus?

Answer 9

Lateral condyle of tibia; proximal end of fibula, lateral epicondyle of femur

Question 10

What is the insertion of fibularis longus?

Answer 10

Fourth tarsal bone; plantar aspect of base od metatarsals

Question 11

What is the nerve of fibularis longus?

Answer 11

FIbular n.

Question 12

What is the action of fibularis longus?

Answer 12

Flex tarsus; rotate paw medially

Question 13

What is the origin of fibularis brevis?

Answer 13

Lateral surface of distal 2/3 of tibia and fibula

Question 14

What is the insertion of fibularis brevis?

Answer 14

Base of MT V

Question 15

What is the action of fibularis brevis?

Answer 15

Flex tarsus

Question 16

What is the nerve of fibularis brevis?

Answer 16

Fibular n.

Question 17

What is the origin of fibularis teritius?

Answer 17

Extensor fossa w/ extensor digitorum longus

Question 18

What is the insertion of fibularis teritius?

Answer 18

Bifurcates at hock; lateral and dorsal branch

Question 19

What is the nerve of fibularis teritius?

Answer 19

Fibular n.

Question 20

What is the action of fibularis teritius?

Answer 20

Connects actions of stifle and hock so they can extend together

Question 21

What is the origin of extensor digitorium lateralis?

Answer 21

Extensor fossa of femur

Question 22

What is the insertion of extensor digitorium lateralis?

Answer 22

Extensor processes of distal phalanges of digits II-V

Question 23

What is the nerve of extensor digitorium lateralis?

Answer 23

Fibular N.

Question 24

What is the action of extensor digitorium lateralis?

Answer 24

Extend digits; flex tarsus

Question 25

What is the origin of gastrocnemium?

Answer 25

Medial and lateral supracondylar tuberosities of femur

Question 26

What is the insertion of gastrocnemium?

Answer 26

Proximal dorsal surface of tuber calcanei via common calcaneal tendon

Question 27

What is the nerve of gastrocnemium?

Answer 27

Tibial n.

Question 28

What is the action of gastrocnemium?

Answer 28

Extend tarsus; flex stifle

Question 29

What is the origin of flexordigitorum superficialis?

Answer 29

Lateral supracondylar tuberosity of femur

Question 30

What is the insertion of flexordigitorum superficialis?

Answer 30

Tuber calcanei via common calcaneal tendon; base of middle phalanges of digits II to V

Question 31

What is the nerve of flexordigitorum superficialis?

Answer 31

Tibial n.

Question 32

What is the action of flexordigitorum superficialis?

Answer 32

Flex first two digital joints of four principal digits; flex stifle; extend tarsus

Question 33

What is the origin of flexordigitorum medialis/lateralis?

Answer 33

M: Fibular head and popliteal line L: Caudal aspect of proximal 2/3 of tibia, proximal 1/2 of fibula

Question 34

What is the insertion of flexordigitorum medialis?

Answer 34

Flexor tubercle on plantar surface of base of each distal phalange

Question 35

What is the nerve of flexordigitorum medialis?

Answer 35

Tibial n.

Question 36

What is the action of flexordigitorum medialis?

Answer 36

Flex digits; Extend tarsus

Question 37

What is the origin of tibialis caudalis?

Answer 37

Proximal end of fibula

Question 38

What is the of insertion of tibialis caudalis?

Answer 38

Medial ligament tissue of tarsus

Question 39

What is the nerve of tibialis caudalis?

Answer 39

Tibial n.

Question 40

What is the action of tibialis caudalis?

Answer 40

Extend tarsus; lateral rotation of pes

Question 41

What is the origin of soleus?

Answer 41

Fibular head

Question 42

What is the insertion of soleus?

Answer 42

Tuber calcanei via common calcaneal tendon

Question 43

What is the nerve of soleus?

Answer 43

Tibial n.

Question 44

What is the action of soleus?

Answer 44

Assist gastrocnemius