Posterior Leg

Question 1

where do the gastrocnemius muscles insert?

Answer 1

posterior surface of calcaneus

Achilles tendon

Question 2

what is the function of the gastrocnemius muscles?

Answer 2

plantar flexion, and flexes leg at the knee joint

Question 3

what is the origin of the gastroc muscles and what joint does it cross?

Answer 3

superior to femoral condyles and crosses the knee joint

Question 4

____ head of gastroc may have a sesamoid bone close to its proximal attachement called?
-fnct of this and fractrure can cause?

Answer 4

Lateral and fabella
-could provide leverage for lateral head
painful fabellar stress fracture may accompany total knee replacement

Question 5

soleus
A) location,
B) origin and insertion
C) function

Answer 5

A)located deep to gastroc muslces,
B) origin is posterior tibia and fibula, and inserts in achilles tendon
C) plantar flexion

Question 6

what makes up the triceps surae

Answer 6

gastrocs, and soleus, gives calf prominence

Question 7

where is the plantaris located?

Answer 7

on top of soleus deep to gastroc, origin is lateral femor insertion is Achilles tendon

Question 8

what is the function of the plantaris

Answer 8

weak plantarflexion, and leg flexion

proprioceptive organ for foot position bc of increased proprioceptive receptor end organs

Question 9

Plantaris long tendon commonly used in surgery of what?

Answer 9

hand tendons

Question 10

rupture of plantaris due to violent ankle movements can be caused from what

Answer 10

sudden dorsiflexion of ankle joint

Question 11

popliteus function

Answer 11

unlocks extended leg by laterally rotating femur on a stationary tibia
also flexes leg weakly

Question 12

where are the superior medial and lateral genicular arteries located?

Answer 12

just superior to the heads of the gastrocnemius

Question 13

what artery comes off the posterior tibial artery in the knee

Answer 13

fibular collateral artery

Question 14

what artery comes off the anterior tibial artery in the knee area?

Answer 14

anterior tibial recurrent artery

Question 15

flexor hallucus longus origin and insertion

Answer 15

deep to soleus, lower posterior fibula, passes deep to flexor retinaculum and crosses under foot to go to big toe

Question 16

flexor hallucus longus occupies shallow groove on

Answer 16

sustentaculum tali, and crosses deep to FDL tendon

Question 17

where is the groove for the flexor hallucus longus tendon on the talus bones located?

Answer 17

between the tubercles of the talus on the posterior side

Question 18

does the FHL cross deep or superficial to the FDL?

Answer 18

it crosses deep to it

Question 19

Function of the FHL

Answer 19

flexes great toe

plantarflexion of foot

Question 20

where is the origin of the FDL

Answer 20

posterior tibia

Question 21

function of FDL and where on the phalanx does it attach

Answer 21

flexes lateral four digits
plantarflexes foot at the ankle joint
attaches at the distal phalanxs of these digits

Question 22

Location of Tibialis posterior

Answer 22

between FDL and FHL and deepest muscle

on interosseous membrane

Question 23

function of tibialis posterior

Answer 23

inversion and plantarflexion

Question 24

Tibial nerve ends by dividing into the what

Answer 24

medial and lateral plantar nerves