Lab 6: Myology- superficial, dorsal & ventral hind limb

Iliopsoas (composed of iliacus and psoas major) and sartorious

Anterior and medial hip has 2 muscle groups which are…

Flexion of thigh and medial rotation of the femur

Iliopsoas action

Iliac fossa, ala of sacrum and vertebrae T12-L5

Iliopsoas origin

Lesser trochanter of femur

Iliopsoas insertion

Flexion of thigh and lateral rotation of the femur

Sartorius action

Anterior superior iliac spine

Sartorius origin

Proximal shaft of the tibia

Sartorius insertion

Adductor magnus, adductor longus and brevis, pectineus, and gracilis

The medial thigh muscle group has 4 muscles, name them

Adduction and extension of the thigh

Adductor magnus action

Pubis and ischium

Adductor magnus origin

Gluteal tuberosity and linea aspera of the femur

Adductor Magnus insertion

Adduction of thigh

Adductor longus and brevis action

Body and inferior ramus of pubis

Adductor longus and brevis origin

Linea aspera

Adductor longus and brevis insertion

Adducts, flexes, and medially rotates thigh

Pectineus action

Body and superior ramus of pubis

Pectineus Origin

proximal shaft of femur

Pectineus insertion

Adduction of thigh, flexion of leg

Gracilis action

Body and superior ramus (pubis) G

Gracilis origin

Proximal shaft of tibia

Gracilis insertion

Rectus femoris (quads), vastos lateralis (quads), vastus medialis (quads), vastus intermedius (quads), tensor fasciae latae

The anterior thigh muscle group consists of 5 muscles, name them

Extension of leg and flexion of thigh

Rectus femoris action

Anterior inferior iliac spine

Rectus femoris origin

Extension of the leg

Vastus lateralis, vastus medialis, and vastus intermedius action

Greater trochanter of the femur

Vastus lateralis origin

Intertrochanteric line and linea aspera of femur

Vastus medialis origin

Anterolateral shaft of femur

Vastus intermedius origin

Patella and tibial tuberosity

Rectus femoris & vastus lateralis, medialis, and intermedius all insert where?

Flexion, abduction and medial rotation of thigh

Tensor fasciae latae action

Anterior superior iliac spine

Tensor fasciae latae origin

Iliotibial tract

Tensor fasciae latae insertion

Psoas major

1

Iliacus

2

Tensor fasciae latae

3

Rectus femoris

4

Vastus lateralis

5

Vastus intermedius

6

Pectineus

8

Adductor brevis

9

Adductor longus

10

Jacob Sartorius

11

Adductor magnus

12

Gracilis

13

Vastus medialis

14

Gluteus medius and maximus

There are 2 muscles in the gluteal muscle group, name them

Abduction of thigh

Gluteus medius action

Ala of ilium

Gluteus medius origin

Greater trochanter of femur

Gluteus medius insertion

Extension, lateral rotation and abduction of thigh

Gluteus maximus action

Ala of ilium, sacrum and coccyx

Gluteus maximus origin

Gluteal tuberosity

Gluteus maximus insertion

Biceps femoris (hammies), semitendinosus, and semimembranosus

The posterior thigh muscle group consists of 3 muscles, name them

Flexion of leg, and extension of thigh

Biceps femoris (hammies), semitendinosus, and semimembranosus action

Ischial tuberosity

Biceps femoris (hammies), semitendinosus, and semimembranosus origin

Head of fibula

Biceps femoris insertion

Proximal shaft of tibia

Semitendinosus insertion

Medial condoyle of tibia

Semimembranosus insertion

Gluteus medius

1

Biceps femoris

2&3

Semitendinosus

4

Semimembranosus

5

Gluteus maximus decimus meridius

6

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Sad sponge break

Tibialis anterior, extensor digitorum longus, extensor hallucis longus and the fibularis tertius

the anterior lower leg muscle group is composed of 4 muscles, name them

Dorsiflexes and inverts foot

Tibialis anterior action

Metatarsal I, medial cuneiform

Tibialis anterior insertion

Extension of toes, dorsiflexion and eversion of foot

Extensor digitorum longus action

Distal phalanges II-V

Extensor digitorum longus insertion

Lateral condoyle shaft (tibia), and interosseous membrane

Extensor digitorum longus and Tibialis anterior origin

Extension of toes, inversion and dorsiflexion of foot

Extensor hallucis longus action

Dorsiflexion and eversion of foot

Fibularis tertius action

Fibula and interosseous membrane

Extensor hallucis longus and fibularis tertius origin

Distal pharynx of the great toe

Extensor hallucis longus insertion

Fibularis brevis and fibularis longus

the lateral lower leg muscle group consists of 2 muscles, name them

Plantar flexion and extension of foot

Fibularis brevis and longus action

Distal shaft of fibula

Fibularis brevis origin

Metacarpal V

Fibularis tertius and brevis insertion

Proximal shaft of fibula

Fibularis longus origin

Metatarsal I: Medial cuneiform

Fibularis longus insertion

Gastrocnemius (medial and lateral head), plantaris, and soleus

The posterior superficial lower leg muscle group consists of 3 muscles, name them

Plantar flexion of foot, flexion of leg

Gastrocnemius and plantaris action

Medial and lateral condyles of femur

Gastrocnemius Origin

Distal shaft of femur

Plantaris origin

Plantar flexion of foot

Soleus action

Proximal shafts to tibia and fibula

Soleus origin

Calcaneous

Gastrocnemius, plantaris and soleus all insert where?

Flexor digitorum longus and flexor hallucis longus

The posterior deep lower leg muscle group consists of 2 muscles, name them

Tibialis anterior

1

Fibularis longus

2

Extensor digitorum longus

3

Fibularis brevis

4

Gastrocnemius

5

Extensor hallucis longus

6

Plantaris

7

Soleus

8

Flexor digitorum longus

9

Flexor hallucis longus

10

Fibularis tertius

11

Tensor fasciae latae

1

Gluteus Maximus

2