Functional Anatomy of Major Muscles - Leg/ Hip complex

Question 1

Anterior Tibialis

Answer 1

Isolated Function: Concentric - ankle plantar flexion and inversion
Integrated Function: Eccentric - ankle plantar flexion and eversion
Isometric - stabilizes arch of foot

Question 2

Posterior tibialis

Answer 2

Isolated function: concentric - ankle plantar flexion and inversion
Integrated function: Eccentric - ankle dorsiflexion and everion
Isometric - stabilizes the arch of the foot

Question 3

Soleus

Answer 3

Isolated function: concentric- accelerates plantar flexion
Integrated function: eccentric- decelerates ankle dorsiflexion
Isometric- stabilizes the foot and ankle complex

Question 4

Gastrocnemius

Answer 4

Isolated function: concentric-accelerates plantar flexion
integrated function: eccentric-decelerates ankle dorsiflexion
isometric-isometrically stable stabilizes the foot and ankle

Question 5

Peroneus longus

Answer 5

Isolated function: concentric-plantar flexes and everts the foot
Integrated function: eccentric-decelerates ankle dorsiflexion and eversion
Isometric-stabilizes the foot and ankle complex

Question 6

Biceps femoris- long head

Answer 6

Isolated function: concentric- accelerated knee flex ion, hip extension and tibial external rotation
Integrated function: eccentric- decelerates knee extension, hip flexion and tibial internal rotation
Isometric- stabilizes limbo pelvic hip complex and knee

Question 7

Biceps femoris- Short head

Answer 7

Isolated function: concentric- accelerates knee flexion and tibial external rotation
Integrated function: eccentric- decelerates knee extension and tibial internal rotation
Isometric- stabilizes the knee

Question 8

Semimebranosus

Answer 8

Isolated function: concentric accelerates,knee flexion,hip extension and tibial internal rotation
Integrated function: eccentric-decelerates, knee extension, hip flexion and tibial external rotation
Isometric-stabilizes the Lumbo-pelvic-hip complex and knee

Question 9

Gastrocnemius

Answer 9

Isolated function: concentric-accelerates plantar flexion
integrated function: eccentric-decelerates ankle dorsiflexion
isometric-isometrically stable stabilizes the foot and ankle

Question 10

Peroneus longus

Answer 10

Isolated function: concentric-plantar flexes and everts the foot
Integrated function: eccentric-decelerates ankle dorsiflexion and eversion
Isometric-stabilizes the foot and ankle complex

Question 11

Bicep demoted- long head

Answer 11

Isolated function: concentric- accelerated knee flex ion, hip extension and tibial external rotation
Integrated function: eccentric- decelerates knee extension, hip flexion and tibial internal rotation
Isometric- stabilizes limbo pelvic hip complex and knee

Question 12

Bevels genie is- Long head

Answer 12

Isolated function: concentric- accelerates knee flexion and tibial external rotation
Integrated function: eccentric- decelerates knee extension and tibial internal rotation
Isometric- stabilizes the knee

Question 13

Semitendinosus

Answer 13

Isolated function: concentric accelerates,knee flexion,hip extension and tibial internal rotation
Integrated function: eccentric-decelerates, knee extension, hip flexion and tibial external rotation
Isometric-stabilizes the Lumbo-pelvic-hip complex and knee

Question 14

Vastus lateralis

Answer 14

Isolated function: concentric-accelerates knee extension

Integrated function: eccentric-decelerates knee flexion isometric-stabilizes the knee

Question 15

Vastus medialis

Answer 15

Isolated function: concentric-accelerates knee extension integrated function: eccentric-decelerates knee flexion
Isometric-stabilizes the knee

Question 16

Vastus intermedius

Answer 16

Isolated function: concentric-accelerates knee extension integrated function: eccentric-decelerates knee extension
Isometric- stabilizes the knee

Question 17

Rectus femoris

Answer 17

Isolated function: concentric-accelerates knee extension and hip flexion
integrated function: eccentric-decelerates knee flexion and hip extension
Isometric-stabilizes the lumbo-pelvic-hip complex and knee