lab practical 3

What is the general action of the anterior hip muscles?

Hip flexion

Which muscle is this?

Psoas major

Which muscle is this?

Psoas major

What is the origin of the psoas major?

transverse processes

Where does the psoas major insert?

Lesser trochanter

What is the action of the psoas major?

Flex hip

What is the synergist of the psoas major?

Iliacus

What is the antagonist of the psoas major?

Gluteus maximus

Which muscle is this?

iliacus

Which muscle is this?

iliacus

What is the origin of the iliacus?

Iliac fossa

Where does the iliacus insert?

Lesser trochanter

What is the action of the iliacus?

Flex hip

What is the synergist of the iliacus?

Psoas major

What is the antagonist of the iliacus?

Gluteus maximus

Which muscle is this?

iliopsoas

Which muscle is this?

sartorius

What is the origin of the sartorius?

ASIS (anterior superior iliac spine)

Where does the sartorius insert?

Tibial tuberosity

What is the action of the sartorius?

Flex hip

What is the antagonist of the sartorius?

Gluteus maximus

What is the general action of the posterior hip muscles?

Hip extension

Which muscle is this?

gluteus maximus

What is the origin of the gluteus maximus?

coccyx

Where does the gluteus maximus insert?

IT tract (iliotibial band)

What are the actions of the gluteus maximus?

Extends hip and

laterally rotates thigh

What is the antagonist of the gluteus maximus?

Iliopsoas

which muscle is this?

gluteus medius

What is the synergist of the gluteus medius?

Gluteus minimus

What is the general action of the medial thigh muscles?

Thigh adduction

Which muscle is this?

pectineus

What are the actions of the pectineus?

Adducts,

flexes,

and medially rotates thigh

What is the synergist of the pectineus?

Adductor longus

What is the antagonist of the pectineus?

Hip abductors

Which muscle is this?

adductor longus

What are the actions of the adductor longus?

Adducts,

flexes,

and medially rotates thigh

What is the synergist of the adductor longus?

Adductor magnus

What is the antagonist of the adductor longus?

Hip abductors

Which muscle is this?

adductor magnus

What are the actions of the adductor magnus?

Adducts,

flexes,

and medially rotates thigh

What is the synergist of the adductor magnus?

Adductor longus

What is the antagonist of the adductor magnus?

Hip abductors

Which muscle is this?

gracilis

What are the actions of the gracilis?

Adducts,

flexes,

and medially rotates thigh

What is the general action of the anterior thigh muscles?

Leg extension

What is the synergist of the gracilis?

Adductor longus

What is the antagonist of the gracilis?

Hip abductors

Which muscle is this?

rectus femoris

What is the origin of the rectus femoris?

AIIS (anterior inferior iliac spine)

Where does the rectus femoris insert?

Tibial tuberosity

What are the actions of the rectus femoris?

Extends knee

and flexes hip

What is the synergist of the rectus femoris?

Vastus lateralis, vastus medialis, vastus intermedius

What is the antagonist of the rectus femoris?

Hamstrings

Which muscle is this?

vastus lateralis

What is the action of the vastus lateralis?

Extends knee

What are the synergists of the vastus lateralis?

Vastus medialis, vastus intermedius, rectus femoris

What is the antagonist of the vastus lateralis?

Hamstrings

Which muscle is this?

vastus intermedius

What is the action of the vastus intermedius?

Extends knee

What are the synergists of the vastus intermedius?

Vastus lateralis, vastus medialis, rectus femoris

What is the antagonist of the vastus intermedius?

Hamstrings

Which muscle is this?

vastus medialis

What is the action of the vastus medialis?

Extends knee

What are the synergists of the vastus medialis?

Vastus lateralis, vastus intermedius, rectus femoris

What is the antagonist of the vastus medialis?

Hamstrings

Which muscle is this?

tensor fasciae latae

What are the actions of the tensor fasciae latae?

Extends knee,

flexes thigh,

abducts thigh,

and medially rotates thigh

What is the antagonist of the tensor fasciae latae?

Hip adductors

What is the general action of the posterior thigh muscles?

Leg flexion

Which muscle is this?

biceps femoris

What is the origin of the biceps femoris?

Ischial tuberosity

Where does the biceps femoris insert?

Tibia

What are the actions of the biceps femoris?

Flexes knee

and extends thigh

What are the synergists of the biceps femoris?

Semitendinosus, semimembranosus

What is the antagonist of the biceps femoris?

Quadriceps

Which muscle is this?

semitendinosus

What is the origin of the semitendinosus?

Ischial tuberosity

Where does the semitendinosus insert?

Medial tibia

What are the actions of the semitendinosus?

Flexes knee

and extends thigh

What are the synergists of the semitendinosus?

Biceps femoris, semimembranosus

What is the antagonist of the semitendinosus?

Quadriceps

Which muscle is this?

semimembranosus

What is the origin of the semimembranosus?

Ischial tuberosity

Where does the semimembranosus insert?

Medial tibia

What are the actions of the semimembranosus?

Flexes knee

and extends thigh

What are the synergists of the semimembranosus?

Biceps femoris, semitendinosus

What is the antagonist of the semimembranosus?

Quadriceps

What is the general action of the anterior leg muscles?

Dorsiflexion (foot upward)

Which muscle is this?

tibialis anterior

What are the actions of the tibialis anterior?

Dorsiflexes and inverts the foot

Where does the tibialis anterior insert?

Tarsals and metatarsals

What is the antagonist of the tibialis anterior?

Gastrocnemius, soleus

Which muscle is this?

extensor digitorum longus

Where does the extensor digitorum longus insert?

Phalanges 2–5

What are the actions of the extensor digitorum longus?

Extends digits 2–5 and dorsiflexes foot

What is the antagonist of the extensor digitorum longus?

Flexor digitorum longus

Which muscle is this?

extensor hallucis longus

Where does the extensor hallucis longus insert?

Hallux (big toe)

What are the actions of the extensor hallucis longus?

Extends hallux and dorsiflexes foot

What is the antagonist of the extensor hallucis longus?

Flexor hallucis longus