Muscles of the Thigh + leg

Question 1

Name the Quadraceps and where the loacted ?

Answer 1

4 quadraceps - Anterior Thigh

0 Rectus Femorsis - crosses hip and knee - involve din hip flexion and knee extension. ( Covers Vastus intermedias )

0 Vastus lateralis
0 Vastus Intermedias
0 Vastus medialis
* All three only cross knee - attach to quadraceps tendon then continue into patella tendon.

Question 2

What part of the thigh does the femoral nerve innervate ?

What nerve root is the femoral nerve derived from ?

Answer 2

Anterior Thigh

Innervates Quadraceps and hip flexors

L2 -L4

Passes through femoral triangle ( Sartorius , inguinal L , Adductor Longus )
* Femoral a , n, v , femoral canal - containing deep lymph nodes ( contained within femoral sheath )

Question 3

Name the muscles contained in the anterior thigh ?

Answer 3

0 Rectus Femorsis
0 Vastus lateralis
0 Vastus Intermedias
0 Vastus medialis

Hip Flexors

0 Sartorius
0 Pectineus (dual innervation - femoral & obturator n (medial thigh nerve ) - base of femoral triangle.
0 Psoas major - originates from lumbar spine
0 illacus - orginates from the iliac fossa of pelvis

Psoas + illiacus = illiopsoas - combine and insert on the lesser trocanter of femur.

Question 4

Function of Sartorius ?

Answer 4

hip flexion & Hip extension .

Question 5

Name the Hamstrings and where the loacted ?

Places of attachment

Answer 5

Hamstrings - 3 muscles

0 Semimembranous - mostly covered by semitendious

0 Semitendinous

0 Long head of Biceps Femoris

Attach to ischial tuboristy - bottom of pelvis , tails attach to medial surface of tibia.

ALL CROSS HIP AND KNEE - involved in Hip extension and knee flexion.

Posterior compartment

Question 6

Muscles in the posterior compartment of thigh ?

Answer 6

0 Semitendious

0 Semimembraneous

0 Long head of Biceps Femoris

0 Short head of Biceps Femoris - not a hamstring does not cross both hip and knee - only knee.

Question 7

What part of the thigh does the Sciatic nerve innervate ?

What nerve root is the Sciatic nerve derived from ?

Answer 7

Posterior Thigh

L4 - S3

Innervates Hamstrings +

Question 8

Muscles in the Medial compartment of thigh ?

Answer 8

Great Major League Basket players - GMLBP

G - Gracilis - inserts on linea aspera (LP)
M - Magnus (adductor)
L - Longus (adductor )
B - Brevis (adductor)
* these L AND B insert very close to LP
P - Pectineus 
M inserts on linea aspera. 

Hip adduction ( movement of leg closer ot body )

Longus more superfical , brevis & magnus behind it.

Magnus - adductor & posterior part - so involved in hip extension & adduction

Question 9

What part of the thigh does the Oburator nerve innervate ?

What nerve root is the nerve derived from ?

Answer 9

Medial Thigh

L2 -L4

Question 10

What muscles abduct the Hip ?

Answer 10

G - Gracilis -

M - Magnus (adductor)

L - Longus (adductor )

B - Brevis (adductor)

P - Pectineus

Great major league Baseball Players

Question 11

What muscles abduct the Hip ?

Answer 11

POSTERIOR

0 Gluteus Medius

0 Gluteus Maximus

ANTERIOR

0 Fasciae Latae.

0 Saritorius ( not sure )