FA - Muscles Of The Lower Limb

Question 1

What is the function, origin, insertion and innovation of the Iliacus Muscle

Answer 1

Function: Flexion at hip
Origin: Iliac Crest
Insertion: Lesser trochanter of Femur
Innovation: Femoral Nerve (L2-L3)

Question 2

What is the function, origin, insertion and innovation of the Psoas Major

Answer 2

Function: Hip Flexion
Origin: L1-5
Insertion: Lesser trochanter of the femur
Innovation: Femoral Nerve L1-3

Question 3

What is the function, origin, insertion and innovation of the Obturator Externus Muscle

Answer 3

Function: Lateral Rotation at hip
Origin: External surface of obturator Membrane
Insertion: trochanteric fossa of femur, posterior
Innovation: obturator nerve L3-4

Question 4

What is the function, origin, insertion and innovation of the Adductor Brevis

Answer 4

Function: Adduction at hip
Origin: body of the pubis
Insertion: linea aspera of femur
Innovation: obturator nerve

Question 5

What is the function, origin, insertion and innovation of the Adductor longus

Answer 5

Function: Adduction of Hip
Origin: body of pubis - anterior
Insertion: linea aspera
Innovation: obturator nerve L2-3

Question 6

What is the function, origin, insertion and innovation of the Adductor Magnus

Answer 6

Function: Adduction of hip
Origin: Ischial tuberosity
Insertion: linea aspera
Innovation: Obturator Nerve L2-3

Question 7

What is the function, origin, insertion and innovation of the Pectineus Muscle

Answer 7

Function: adducts and flexes hip joint
Origin: superior pubic ramus
Insertion: Pectineal line of femur
Innovation: Femoral (L2-L3) Obturator nerve (L2-L3)

Question 8

What is the function, origin, insertion and innovation of the Quadratus Femoris muscle

Answer 8

Function: lateral rotation of hip
Origin: Ischial tuberosity (lateral)
Insertion: tubercle of femur
Innovation: L5 - S1

Question 9

What is the function, origin, insertion and innovation of the Obturator Internus Muscle

Answer 9

Function: medial rotation at hip
Origin: internal obturator membrane
Insertion: greater trochanter
Innovation: obturator nerve L5-S1

Question 10

What is the function, origin, insertion and innovation of the Gracilis Muscle

Answer 10

Function: Medial rotation at hip, Flexion and medial rotation at knee joint
Origin: body of pubis and inferior pubic ramus
Insertion: medial aspect of proximal tibia
Innovation: obturator Muscle (L2-L3)

Question 11

What is the function, origin, insertion and innovation of the sartorius muscle

Answer 11

Function: flexes and medially rotates at knee, flexion, abduction and lateral rotation at hip
Origin: Anterior superior iliac spine
Insertion: Medial Aspect of Proximal Tibia
Innovation: Femoral Nerve (L2-L3)

Question 12

What is the function, origin, insertion and innovation of the Semimembranous Muscle

Answer 12

Function: flexion of knee and eve tension of hip
Origin: Ishiguro tuberosity
Insertion: medial Condyle of tibia
Innovation: Sciatic Nerve

Question 13

What is the function, origin, insertion and innovation of the Semitendinus Muscle

Answer 13

Function: flexion at knee, extension at hip
Origin: Ischial tuberosity
Insertion: medial aspect of proximal tibia
Innovation: Sciatic Nerve

Question 14

What is the function, origin, insertion and innovation of the Biceps Femoris Muscle

Answer 14

Function: flexion and lateral rotation at knee, extension at hip
Origin: Ischial tuberosity
Insertion: head of fibula
Innovation: Sciatic nerve

*has a long and a short head

Question 15

What is the function, origin, insertion and innovation of the Rectus Femoris

Answer 15

Function: extension of knee, flexion of hip
Origin: iliac spine
Insertion: tibial tuberosity
Innovation: femoral nerve

Question 16

What is the function, origin, insertion and innovation of the Vastus Medialis

Answer 16

Function: extension of knee
Origin: medial intertrochanteric line
Insertion: tibial tuberosity
Innovation: femoral nerve

Question 17

What is the function, origin, insertion and innovation of the Vastus Lateralis

Answer 17

Function: extension at knee
Origin: intertrochanteric line
Insertion: tibial tuberosity
Innovation: femoral nerve

Question 18

What is the function, origin, insertion and innovation of the Vastus Intermedius

Answer 18

Function: extension at knee
Origin: body of femur
Insertion: tibial tuberosity
Innovation: femoral nerve

Question 19

What is the function, origin, insertion and innovation of the Gluteus Maximus

Answer 19

Function: Extension, lateral rotation and abduction at hip joint
Origin: posterior gluteal line, posterior sacrum
Insertion: tubercle of Iliotibial tract
Innovation: inferior gluteal nerve

Question 20

What is the function, origin, insertion and innovation of the Gluteus Minimus

Answer 20

Function: medial rotation and abduction at hip
Origin: between anterior and posterior gluteal lines
Insertion: greater trochanter of femur
Innovation: superior gluteal nerve

Question 21

What is the function, origin, insertion and innovation of the Gluteus Medius

Answer 21

Function: medial rotation and abduction at hip
Origin: area between anterior and posterior gluteal lines
Insertion: greater trochanter of the femur
Innovation: superior gluteal nerve

Question 22

What is the function, origin, insertion and innovation of the Superior Gemellus Muscle

Answer 22

Function: lateral rotation and abduction at hip
Origin: Ischial spine
Insertion: greater trochanter of femur
Innovation: obturator Internus

Question 23

What is the function, origin, insertion and innovation of the Inferior Gemellus Muscle

Answer 23

Function: lateral rotation and abduction of thigh
Origin: Ischial Tuberosity
Insertion: greater trochanter of femur
Innovation: Quadratus Femoris

Question 24

What is the function, origin, insertion and innovation of the Tensor Fasciae Latae

Answer 24

Function: flexion, abduction and medial rotation fo hip
Origin: iliac spine,
Insertion: tubercle of iliotibial tract
Innovation: superior gluteal nerve

Question 25

What is the function, origin, insertion and innovation of the Piriformis

Answer 25

Function: lateral rotation and abduction of hip Origin: pelvic surface of the sacrum Insertion: greater trochanter of femur Innovation: nerve to Piriformis

Question 26

What is the function, origin, insertion and innovation of the Popliteus

Answer 26

Function: Unlocks close packed position, laterally rotates femur on tibia, can medially rotate too Origin: groove for Popliteus Muscle Insertion: posterior surface of tibia Innovation: Tibial Nerve

Question 27

What is the function, origin, insertion and innovation of the medial / lateral heads of gastrocnemius

Answer 27

Function: plantarflexion at ankle and flexion at the knee Origin: lateral / medial Condyle Insertion: posterior surface of calcaneus Innovation: tibial nerve

Question 28

What is the function, origin, insertion and innovation of the Tibialis Posterior Muscle

Answer 28

Function: plantar flexes foot at ankle joint inverts for at subtalar and transverse tarsal joints Origin: posterior surface of tibia Insertion: plantar aspects of bases of second to fourth metatarsals Innovation: tibial nerve

Question 29

What is the function, origin, insertion and innovation of the Tibialis Anterior Muscle

Answer 29

Function: Origin: Insertion: Innovation:

Question 30

What is the function, origin, insertion and innovation of the Fibularis longus

Answer 30

Function: plantar flexion at ankle, everting the foot Origin: head and lateral surface of fibula Insertion: plantar surface of medial cuneform bone Innovation: superficial Fibular nerve

Question 31

What is the function, origin, insertion and innovation of the oblique head of Adductor Hallucis Muscle

Answer 31

Function: Adducts great toe Origin: plantar aspects of bases of second to fourth metatarsal bones Insertion: base of proximal phalanx of great toe Innovation: lateral plantar nerve

Question 32

What is the function, origin, insertion and innovation of the Transverse head of Adductor Hallucis Muscle

Answer 32

Function: Adducts great toe Origin: plantar ligaments of metatarsophalangeal joints Insertion: base of proximal phalanx of great toe Innovation: lateral plantar nerve

Question 33

What is the function, origin, insertion and innovation of the Fibularis Brevis Muscle

Answer 33

Function: plantar flexion, everts foot Origin: lateral surface of fibula Insertion: tuberosity of fifth metatarsal bone Innovation: superficial fibular nerve

Question 34

What is the function, origin, insertion and innovation of the Fibularis Longus Muscle

Answer 34

Function: plantar flexion, eversion Origin: head of lateral surface of fibula Insertion: medial cuniform bone Innovation: superficial fibular nerve

Question 35

What is the function, origin, insertion and innovation of the Extensor Digitorium brevis

Answer 35

Function: Extends 2nd to 4th toes Origin: lateral calcaneus Insertion: extensor expansions of second to fourth toes Innovation: deep fibular nerve

Question 36

What is the function, origin, insertion and innovation of the Flexor Digitorium longus muscle

Answer 36

Function: plantar flexes ankle, flexes 2nd to 4th toes Origin: posterior surface of tibia Insertion: bases of the distal phalangesof the 2nd to 4th phalanges Innovation: tibial nerve

Question 37

What is the function, origin, insertion and innovation of the Plantaris Muscle

Answer 37

Function: plantar flexion of foot, flexion of knee Origin: lateral supercondyle line of femur Insertion: posterior surface of calcaneus Innovation: tibial nerve

Question 38

What is the function, origin, insertion and innovation of the Soleus Muscle

Answer 38

Function: plantar flexion Origin: head of fibula Insertion: posterior surface of calcaneus Innovation: tibial nerve

Question 39

What is the function, origin, insertion and innovation of the Fibularis Tertius

Answer 39

Function: Dorsi flexes, eversion Origin: medial surface of fibula Insertion: dorsal aspect of base and body of fifth metatarsal bone Innovation: deep fibula nerve

Question 40

What is the function, origin, insertion and innovation of the Quadratus Plantae

Answer 40

Function: flexion of the 2nd - 4th toes Origin: medial and lateral aspects fo the plantar surfaces of calcaneus Insertion: tendon of flexor digitorum longus muscle Innovation: lateral plantar nerve

Question 41

What is the function, origin, insertion and innovation of the Abductor Digiti Minimi

Answer 41

Function: abducts and flexes little toe Origin: medial and lateral processes calcaneal tuberosity Insertion: lateral aspect of base of proximal phalanx of little toes Innovation: lateral plantar nerve

Question 42

What is the function, origin, insertion and innovation of the Extensor Hallucis Longus

Answer 42

Function: Dorsiflexion foot, extends great toe Origin: medial surface of fibula Insertion: base of distal phalanx of great toe Innovation: deep fibular nerve

Question 43

What is the function, origin, insertion and innovation of the Extensor Digitorium longus

Answer 43

Function: Dorsiflexion, extends 2nd to 4th toes Origin: lateral Condyle of tibia Insertion: base of phalanges Innovation: deep fibular nerve

Question 44

What is the function, origin, insertion and innovation of the flexor Hallucis longus

Answer 44

Function: plantar flexion, flexes great toe Origin: posterior surface of fibula Insertion: base of distal phalanx of great toe Innovation: Tibial Nerve

Question 45

What is the function, origin, insertion and innovation of the Extensor Hallucis Brevis

Answer 45

Function: Extends great toe Origin: calcaneus Insertion: proximal phalanx of great toe Innovation: deep fibular nerve

Question 46

What is the function, origin, insertion and innovation of the Dorsal Interossei

Answer 46

Function: abduction of toes Origin: Metatarsals Insertion: proximal phalanges Innovation: lateral plantar nerve

Question 47

What is the function, origin, insertion and innovation of the abductor Hallucis

Answer 47

Function: Abducts great toe Origin: calcaneal tuberosity Insertion: proximal phalanx of great toe Innovation: medial plantar nerve

Question 48

What is the function, origin, insertion and innovation of the Lumbricals

Answer 48

Function: flexion, support arch shape Origin: flexor Digitorium tendon Insertion: phalanges Innovation: plantar nerve

Question 49

What is the function, origin, insertion and innovation of the

Answer 49

Function: Origin: Insertion: Innovation:

Question 50

What is the function, origin, insertion and innovation of the

Answer 50

Function: Origin: Insertion: Innovation:

Question 51

What is the function, origin, insertion and innovation of the

Answer 51

Function: Origin: Insertion: Innovation:

Question 52

What is the function, origin, insertion and innovation of the

Answer 52

Function: Origin: Insertion: Innovation:

Question 53

What is the function, origin, insertion and innovation of the

Answer 53

Function: Origin: Insertion: Innovation:

Question 54

What is the function, origin, insertion and innovation of the

Answer 54

Function: Origin: Insertion: Innovation: