Caudal Muscles of the Crus

Question 0

soleus

Answer 0

absent in dog, present in feline
O: head of fibula
I: tendon of lateral head of gastrocnemius
A: assist gastrocnemius in extension of tarsal joints

Question 1

gastrocnemius

Answer 1

lateral and medial heads
O: caudodistal femur
I: tuber calcanei
A: flex stifle joint; extend tarsal joints

Question 2

superficial digital flexor

Answer 2

O: lateral supracondylar tuberosity of femur
I: tuber calcanei and plantaroproximal aspects of middle phalanges of digits 2-5
A: minimally flex stifle joint; extend tarsal joints; flex digital joints except distal interphalangeal joints

Question 3

deep digital flexor

Answer 3

heads - lateral digital flexor, medial digital flexor, caudal tibial (vestigial in carnivores)
O: caudal aspects of tibia and fibula
I: plantar aspect of distal phalanges
A: extend tarsal joints and flex digital joints

Question 4

popliteus

Answer 4

O: popliteal fossa of femur
I: proximal caudal aspect of tibia
A: rotate leg medially; flex stifle joint