Posterior Thigh/Anterior thigh and Trunk

Question 1

Answer 1

Semitendimosus mm (post thigh)

Origin: ischial tuberosity
Insertion: medial surface of upper portion of tibia ( pes anserinus)
Action: Hip EXT, leg FLX + IR
Nerve: Tibial portion of sciatic (VR L4-S3)
Perfusion: Profundus Femoris

Question 2

Answer 2

semimembranosus mm (posterior thigh)

Origin: ischial tuberosity
Insertion: Medial condyle of tibia
Action: Hip EXT, leg FLX + IR
Nerve: Tibial portion of sciatic (VR L4-S3)
Perfusion: Profundus Femoris

Question 3

Answer 3

biceps femoris long head mm (posterior thigh)

Origin: ischial tuberosity
Insertion: head of fibula 
Action: Hip EXT, leg FLX + ER
Nerve: Tibial portion of sciatic (VR L4-S3)
Perfusion: Profundus Femoris

Question 4

Answer 4

biceps femoris short head mm (posterior thigh)

Origin: linea aspera, lateral supracondylar line
Insertion: head of fibula
Action: Leg FLX+ ER
Nerve: common fibular division of sciatic (VR L4-S3)
Perfusion: profundus femoris

Question 5

Answer 5

psoas major mm (trunk)

Origin: transverse processes, intervertebral disks and bodies of T12-L5
Insertion: lesser trochanter
Action: hip, trunk FLX
Nerve: Subcostal Nerve (VR T 12 , VR L1-L3)
Perfusion: 12th anterior intercostal aa/vv, 1-3 lumbar aa/vv

Question 6

Answer 6

psoas minor mm

Origin: Bodies and intervertebral disks of T12-L1
Insertion: pectineal line/lesser trochanter?
Action: aids in trunk FLX
Nerve: Subcostal Nerve (VR T 12 , VR L1-L3)
Perfusion: 12th anterior intercostal aa/vv, 1-3 lumbar aa/vv

Question 7

Answer 7

iliopsoas mm (trunk)

Origin: iliac fossa, ala of sacrum, transverse processes + intervertebral disks and bodies of T12-L5
Insertion: lesser trochanter 
Action: Hip Flx
Nerve: Femoral (VR L2-L4) 
Perfusion:  Femoral aa/vv

Question 8

Answer 8

iliacus mm (truck)

Origin: iliac fossa, ala of sacrum (anterior sacroiliac ligament, iliac crest)
Insertion: lesser trochanter 
Action: Hip FLX
Nerve: Femoral ( VR L2-L4)
Perfusion: external iliac aa/vv

Question 9

Answer 9

Sartorius mm (anterior thigh)

Origin: Anterior- superior iliac spine 
Insertion: Upper medial side of tibia  (pes anserinus)
Action: Hip FLX + ER + ABD; leg FLX + IR
Nerve: Femoral (VR L2-L4)
Perfusion: Femoral aa/vv

Question 10

Answer 10

Rectus Femoris mm (anterior thigh)

Origin: anterior-inferior iliac spine, the posterior superior rim of the acetabulum
Insertion: base of patella, tibial tuberosity
Action: Hip FLX; Leg EXT
Nerve: Femoral (VR L2-L4)
Perfusion: Femoral aa/vv

Question 11

Answer 11

Vastus medialis mm (quadriceps femoris) (anterior thigh)

Origin: intertrochanteric line, linea aspera, medial intermuscular septum
Insertion: medial side of patella, tibial tuberosity
Action: Leg EXT
Nerve: Femoral (VR L2-L4)
Perfusion: Femoral aa/vv

Question 12

Answer 12

Vastus Lateralis mm (quadriceps femoris) (anterior thigh)

Origin: intertrochanteric line, greater trochanter, linea aspera, gluteal tuberosity, lateral intermuscular septum
Insertion: lateral side of patella, tibial tuberosity
Action: leg EXT
Nerve: Femoral (VR L2-L4)
Perfusion: Femoral aa/vv

Question 13

Answer 13

Vastus intermedius mm (quadrecips femoris) (anterior thigh)

Origin: upper shaft of femur, lower lateral intermuscular septum
Insertion: upper border of patella, tibial tuberosity
Action: Leg EXT
Nerve: Femoral (VR L2-L4)
Perfusion: Femoral aa/vv

Question 14

Articular is Genu

Question 15

Answer 15

Adductor Longus mm (medial thigh)

Origin: body of pubis below its crest 
Insertion: middle third of linea aspera
Action: Hip ADD, FLX
Nerve: Obturator (VR (L2-L4)
Perfusion: obturator aa/vv

Question 16

Answer 16

Adductor brevis mm (medial thigh)

Origin: body and inferior pubic ramus
Insertion: pectineal line of femur, upper part of linea aspera
Action: Hip ADD, FLX
Nerve: Obturator (VR (L2-L4)
Perfusion: obturator aa/vv

Question 17

Answer 17

Adductor magnus mm (medial)

Origin: ischiopubic ramus, ischial tuberosity
Insertion: linea aspera, medial supracondylar line, adductor tubercle
Action: Hip ADD, EXT, FLX
Nerve: Obturator (VR (L2-L4) Sciatic (VR L4-S3)
Perfusion: obturator + profundus femoris aa/vv

Question 18

Answer 18

Gracilis mm (medial thigh)

Origin: Body and inferior pubic ramus
Insertion: medial tibia (pes anserinus
Action: Hip ADD + FLX; leg FLX + IR
Nerve: Obturator (VR (L2-L4)
Perfusion: obturator aa/vv

Question 19

Answer 19

Pectineus mm (medial thigh)

Origin: pectineal line of pubis
Insertion: pectineal line of femur
Action: Hip ADD, FLx
Nerve: Femoral + obturator (VR L2-L4)
Perfusion: Femoral + obturator aa/vv

Question 20

Answer 20

Obturator Externus mm (medial thigh)

Origin: margin of obturator foramen and obturator membrane
Insertion: intertrochanteric fossa of femur
Action: Hip ER, ADD
Nerve: Obturator (VR (L2-L4)
Perfusion: obturator aa/vv

Question 21

Sacrotuberous Ligament

Question 22

inguinal Ligament

Answer 22

From anterior superior iliac spine to pubic crest

Question 23

Sacrospionous ligament

Question 24

Posterior Thigh muscles (4)

Answer 24

semitendinosus, semimembranosus, biceps femoris long head/short head

Question 25

anterior thigh muscles (7)

Answer 25

vastus medialis, vastus lateralis, vastus intermedius, rectus femoris, sartorius, iliopsoas, articularis genu

Question 26

medial thigh muscles (6)

Answer 26

adductor brevis, adductor longus, adductor magnus, gracilis, obturator externus, pectineus