lower limb muscles

Question 1

rectus femoris

Answer 1

origin - anterior inferior iliac spine
insertion - quadricpes tendon base of patella and onto tibial tuberosity
action - extends leg at knee, hip flexor

Question 2

vastus medialis

Answer 2

origin - medial Linea aspera
insertion - quadriceps tendon to base of patella ligament and onto tibial tuberosity
action - extends the knee joint

Question 3

vastus lateralis

Answer 3

origin - greater trochanter and the lateral lip of the Linea aspera of the femur
insertion - tibial tuberosity via patella ligament
action - help extend the knee joint

Question 4

glute maximus

Answer 4

origin - posterior third illum, coccyx, sacrum
insertion - IT band, gluteal tuberosity
action - Extends thigh at hip, laterally rotates thigh at the hip, abducts thigh at the hip

Question 5

glute Medius

Answer 5

origin - ilium
insertion - greater trochanter of femur
action - Adducts thigh at the hip joint and medially rotates thigh

Question 6

adductor longus

Answer 6

origin - superior aspect pubic bone
insertion - Linea aspera of femur
action - Adducts thigh at hip, flexes thigh at hip

Question 7

adductor Magnus

Answer 7

origin - Oblique head – inferior ramus of pubis & ischial ramus.
origin - Vertical head – ischial tuberosity.
insertion - Oblique head – gluteal tuberosity, Linea aspera and proximal supracondylar line of femur.
Insertion - Vertical head – adductor tubercle of femur.
action - Adducts thigh at hip, flexes thigh at hip, extends thigh at hip

Question 8

Semi-tendinosis

Answer 8

origin - ischial tuberosity
insertion - medial surface of tibia
action - Produces thigh flexion, internal rotation, pelvis stabilization, leg flexion

Question 9

semi-membranous

Answer 9

origin - ischial tuberosity
insertion - medial condyle of femur
action - Extends hip joint, flexes the knee joint, helps rotate knee medially

Question 10

Bicep femoris

Answer 10

origin - ischial tuberosity & Linea aspera
insertion - head of fibula & lateral condyle of tibia
action - hip extension and knee flexion

Question 11

tensor fascia Lata

Answer 11

origin - iliac crest
insertion - lateral condyle of tibia
action - Abducts the thigh at hip, flexes thigh at hip

Question 12

sartorius

Answer 12

origin - ASIS
insertion - medial surface of body of tibia
action - Abducts and externally rotates the thigh and flexes and internally rotates the leg

Question 13

Gracilis

Answer 13

origin - inferior border of pubic body near symphysis
insertion - proximal medial surface of tibia
action - medial rotates the joint at the knee

Question 14

Gastrocnemius

Answer 14

origin - Posterior surfaces of femoral condyles
insertion - Posterior of calcaneus via calcaneal tendon
action - Plantar flexing of foot and flexing leg at knee joint

Question 15

Tibialis anterior

Answer 15

origin - Lateral tibial condyle, Anterior lateral aspect of upper tibia and interosseous membrane
insertion - Medial cuneiform and first metatarsal bones of the foot
action - Dorsiflexion, inversion of foot, stabilise arch of foot

Question 16

Fibularis longus

Answer 16

origin - Head and lateral side of fibula
insertion - Plantar surface of foot, 1st metatarsal and first cuneiform
action - Lateral Eversion of the foot, extends the foot down (planter flexion)