Dissection 10: Hip and Posterior thigh

Question 1

What are the nerve roots of the posterior cutaneous nerve of the thigh

Answer 1

S1-S3

Question 2

What and where does the sciatic nerve divide into

Answer 2

the common fibular and tibial nerve at any point between the gluteal region and the popliteal fossa

Question 3

Name the four hamstring muscles

Answer 3

semimembranosus, semitendinosus, biceps femorus

Question 4

where do most of the hamstrings attach proximally

Answer 4

to the ischial tuberosity

Question 5

Where does the biceps femoris attach distally

Answer 5

to the lateral aspect of the head of the fibula

Question 6

Where does the rectus femoris attach proximally

Answer 6

to the linea aspera of the the femur not the ischial tuberosity

Question 7

What supplies rectus femoris

Answer 7

the common fibular branch of the sciatic nerve not the tibial branch

Question 8

What is the distal attachment of semimembranosis and semitendonosis

Answer 8

proximal tibia

Question 9

what is the action of the hamstrings

Answer 9

to extend and flex the knee (biceps does not contribute to hip movement)

Question 10

what ligament attaches the femur to the depth of the acetablum

Answer 10

ligament of the head of the femur

Question 11

What increases the depth of the acetablum

Answer 11

the acetablar labrum