Lower limb muscles Flashcards
Pectineus
Origin
Pecten pubis and superior ramus of the pubis
Part of anterior and medial thigh
Pectineus
Insertion
Pectineal line of the femur
Pectineus
Action
Adducts and flexes the thigh
Pectineus
Innervation
Femoral n. and obturator n.
Pectineus
Blood supply
Medial circumflex femoral artery,
obturator artery
Iliopsoas
Origin and Insertion
Origin: Iliac fossa and TP and bodies of vertebrae T12–L5 (psoas major)
Insertion: Lesser trochanter of the femur
(Part of anterior thigh)
Iliopsoas
Action
Flexes the thigh
Iliopsoas
Innervation
Femoral n.
Sartorius
Origin and Insertion
Origin: Anterior superior iliac spine
Insertion: Medial surface of the proximal tibia (at pes anserinus)
(Part of anterior thigh)
Iliopsoas
Blood supply
Iliolumbar artery
Sartorius
Action
Flexes and laterally rotates the thigh, flexes and medially rotates the leg
Sartorius
Innervation
Femoral n.
Tensor fasciae lata (TFL)
Origin
Anterior superior iliac spine
Tensor fasciae lata (TFL)
Insertion
Iliotibial tract
Part of anterior thigh, gluteal region
Sartorius
Blood supply
Femoral artery
Tensor fasciae lata (TFL)
Innervation
Nerve: Superior gluteal n.
Rectus femoris
Origin
Anterior inferior iliac spine
Part of anterior thigh, part of quadriceps femoris
Rectus femoris
Insertion
Tibial tuberosity
Rectus femoris
Action
Flexes the thigh and extends the leg
Tensor fasciae lata (TFL)
Blood supply
Ascending branch
of lateral circumflex femoral artery
Vastus medialis
Origin
Medial lip of the linea aspera and intertrochanteric line
Part of anterior thigh, part of quadriceps femoris
Vastus medialis
Insertion
Tibial tuberosity
Vastus medialis
Action
Extends the leg
Vastus medialis
Innervation
Femoral n.
Rectus femoris
Blood supply
Profunda femoris
and lateral circumflex
femoral arteries
Vastus lateralis
Origin and Insertion
Origin: Lateral lip of the linea aspera and greater trochanter
Insertion: Tibial tuberosity
(Part of anterior thigh, part of quadriceps femoris)
Vastus lateralis
Action
Extends the leg
Vastus lateralis
Innervation
Femoral n.
Vastus intermedius
Origin
Anterior and lateral surfaces of the femur
Part of anterior thigh, part of quadriceps femoris
Vastus medialis
Blood supply
Femoral and
profunda femoris arteries
Vastus intermedius
Action
Extends the leg
Vastus intermedius
Innervation
Femoral n.
Vastus lateralis
Blood supply
Lateral circumflex
femoral and profunda
femoris arteries
Vastus intermedius
Blood supply
Lateral circumflex
femoral and profunda
femoris arteries
Gracilis
Origin
Body of pubis and inferior pubic ramus
Part of medial thigh
Gracilis
Insertion
Superior part of medial surface of tibia
at pes anserinus
Gracilis
Action
Adducts the thigh; flexes and internally rotates the leg
Gracilis
Innervation
Obturator n.
Adductor longus
Origin
Body of pubis inferior to pubic crest
Part of medial thigh
Adductor longus
Insertion
Middle third of linea aspera
Gracilis
Blood supply
Profunda femoris
artery, medial circumflex
femoral artery
Adductor longus
Innervation
Obturator n.
Adductor brevis
Origin
Body of pubis and inferior pubic ramus
Part of medial thigh
Adductor brevis
Insertion
Pectineal line and proximal part of linea aspera
Adductor brevis
Action
Adducts the thigh
Pectineus
Blood supply
Medial circumflex femoral artery,
obturator artery
Adductor magnus
Origin
Ischiopubic ramus and ischial tuberosity
Part of medial thigh
Adductor magnus
Insertion
Adductor part: Gluteal tuberosity, linea aspera, medial supracondylar line
Hamstring part: adductor tubercle of the femur
Adductor magnus
Action
Adducts and extends the thigh
Adductor magnus
Innervation
Adductor part: Obturator n.
Hamstring part: Tibial division of the sciatic n.
Adductor longus
Blood supply
Profunda femoris
and medial circumflex femoral arteries
Obturator externus
Origin and Insertion
Origin: External margins of obturator foramen and obturator membrane
Insertion: Trochanteric fossa of femur
(Part of medial thigh)
Obturator externus
Action
Laterally rotates the thigh
Obturator externus
Innervation
Obturator n.
Adductor brevis
Blood supply
Profunda femoris,
medial circumflex femoral, and
obturator arteries
Adductor magnus
Blood supply
Femoral, profunda
femoris, and obturator arteries
Obturator externus
Blood supply
Medial circumflex femoral artery,
obturator artery
Gluteus maximus
Origin
- Ilium posterior to posterior gluteal line
- Dorsal surface of the sacrum and coccyx
- Sacrotuberous ligament
(A Gluteal region muscle)
Gluteus maximus
Insertion
Iliotibial tract and gluteal tuberosity
Gluteus maximus
Action
Extends and laterally rotates the thigh
Gluteus maximus
Innervation
Inferior gluteal n.
Gluteus medius
Origin
External surface of ilium between anterior and posterior gluteal lines and gluteal fascia
(A Gluteal region muscle)
Gluteus medius
Insertion
Lateral surface of greater trochanter of the femur
Gluteus medius
Action
Abducts and medially rotates the thigh
Gluteus medius
Innervation
Superior gluteal n.
Gluteus minimus
Origin
Lateral surface of the ilium between the anterior gluteal and inferior gluteal lines
(A Gluteal region muscle)
Gluteus minimus
Insertion
Anterior surface of greater trochanter of the femur
Gluteus minimus
Action
Abducts and medially rotates the thigh
Gluteus minimus
Innervation
Superior gluteal n.
Piriformis
Origin
Anterior surface of the sacrum
A Gluteal region muscle