Exam 4 Muscles of the Superficial posterior leg

Question 1

Muscles of the Superficial posterior leg include:

Answer 1

Gastrocnemius
Soleus
plantaris

Question 2

Together the gastrocnemius & the soleus make up the:

Answer 2

triceps sure (calf muscle)

Question 3

The tendons of the 3 muscles fuse together to form:

Answer 3

Achilles Tendon or Tendon calcaneus

Question 4

ALL posterior leg muscles are supplied by the:

Answer 4

Tibial Nerve

Question 5

Origin of the gastrocnemius:

Answer 5

Lateral & medial epicondyles of the femur

Question 6

Insertion of the gastrocnemius:

Answer 6

Tuberosity of the calcaneus

Question 7

Sesamoid bone which is found imbedded in the lateral head of the origin of the gastrocnemius & articulates w/ the lateral condyle of the femur

Answer 7

Fabella

Question 8

Origin of the soleus:

Answer 8

Soleal line of the tibia

head & shaft of the fibula

Question 9

Insertion of the soleus:

Answer 9

Tuberosity of the calcaneus

Question 10

Actions of both gastrocnemius & soleus

Answer 10

1. Plantar flex the foot
2. Inversion of the foot
3. Stabilizes the ankle joint

Question 11

• Small variable muscle which is missing in about 5% of the pop.
• Found b/t th elateral head of the gastrocnemius & the soleus
• Muscle belly is short & its tendon is long & descends along the medial border of the tendon calcaneus

Answer 11

Plantaris

Question 12

Origin of plantars:

Answer 12

Lateral supracondylar ridge of the femur

Question 13

Insertion of the plantars:

Answer 13

Tuberosity of the calcaneus

Question 14

Actions of the plantars:

Answer 14

1. Plantar flex of the foot

2. Inversion of the foot