anterior thigh muscles

Question 1

Answer 1

Pectinous

Proximal attachment: superior ramus of pubis
distal attachment : pectineal line of femur, just inferior to lesser trochanter
action: adducts and flexes hip joint; assists with medial rotation of hip joint
innervation : femoral nerve (L2,L3)

Question 2

Answer 2

Sartorius

Proximal attachment: anterior superior iliac spine and superior part of notch inferior to it

distal attachment : superior part of medial surface of tibia

action: flexes, abducts, and laterally rotates hip joint; flexes knee joint

innervation : femoral nerve (L2, L3)

Question 3

Answer 3

Rectus femoris

proximal attachment: anterior inferior iliac spine and ilium superior to acetabulum

distal attachment: via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity

Question 4

vastus lateralis

Question 5

vastus medialis

Question 6

vastus intermedius

Question 7

Answer 7

articulates genu

tiny muscle, inserts on synovial membrane of knee joint, pulls synovial membrane out of the way as you extend the knee

innervation : femoral nerve