Muscles of the leg (caudal and craniolateral)

Question 1

deep crural fascia

Answer 1

the medial and lateral femoral fasciae blend over the stifle and continue distally in the leg as this

Question 2

Crural extensor retinaculum

Answer 2

deep crural fascia that thickens to form a oblique band binding down the tendons of the long digital extensor and cranial tibial muscles

Question 3

Tarsal Extensor Retinaculum

Answer 3

fibrous loop that attaches to the calcaneus and wraps around the tendon of the long digital extensor

Question 4

Cranial Tibial Muscle 
Origin
Insertion 
Action 
Innervation

Answer 4

Origin: the extensor groove and adjacent articular margin of the tibia, and lateral edge of the cranial tibia border

Insertion: plantar surface of the base of metatarsals I and II

Action: flex the tarsocrural joint and rotate the paw laterally

Innervation: Fibular Nerve

Question 5

Long digital Extensor 
Origin
Insertion 
Action 
Innervation

Answer 5

Origin: extenser fossa of the femur

Insertion: extensor process of the distal phalanges of digits 2-5

Action: extend the digital joints and flex the tarsal joints

Innervation: Fibular Nerve

Question 6

The Fibularis/ Peroneus longus
Action
Innervation

Answer 6

Action:

• flex the tarsal joints
• rotate the paw medially

Innervation: Fibular nerve

Question 7

Gastrocnemius m.
Origin
Insertion 
Action 
Innervation

Answer 7

Lateral and Medial Head

Origin: medial and lateral supracondylar tuberosities of the femur

Insertion: the proximal dorsal surface of the tuber calcanei

Action: extend the tarsal joints and flex the stifle joint

Innervation: Tibial Nerve

Question 8

Superficial digital flexor m.
Origin
Insertion 
Action 
Innervation

Answer 8

Origin: lateral supracondylar tuberosity of the femur

Insertion: tuber calcanei and base of the middle phalanges of digits 2-5

Action:

• flex the first two digital joints of the 4 digits
• flex the stifle joint
• extend the tarsal joints

Innervation: Tibial Nerve

Question 9

Deep digital flexor m.

3 heads and read pg 66

Answer 9

made of the lateral and medial digital flexor
Action: flex the digits and extend the tarsal joints
Innervation: tibial nerve

Question 10

The popliteus m.
Action
Innervation

Answer 10

Action: to rotate the leg medially

Innervation: tibial nerve

Question 11

The interosseous muscles
Action
Innervation

Answer 11

Action: flex the digits and extend the tarsal joints
Innervation: Tibial Nerve

Question 12

The short digital extensor muscle (aka - extensor bravis m.)
Action:
Innervation

Answer 12

Action: (same as long digital extensor) extend the digital joints and flex the tarsal joints

Innervation: Fibular Nerve

Question 13

Extends digits and flexes the tarsus?

Flexes the digits and extends the tarsus?

Answer 13

extensor bravis and long digital extensor

interosseous muscle and deep digital flexor

Question 14

thoracocolumbar fascia

Answer 14

deep fascia of the trunk that covers the doral muscles of the lumbar area, pelvis, and tail

Question 15

deep gluteal fascia

Answer 15

covers the muscles of the pelvis

Question 16

lateral and medial femoral fascia

Answer 16

medial - thin

later - fascia lata, - thick - serves as an aponeurotic insertion for thigh muscles

Question 17

crural fascia

Answer 17

femoral fascia on the leg