Exam 1 - Thigh Flashcards
What are the muscles of the Anterior Thigh (flexors of the hip)?
Pectineus, Iliopsoas (Psoas major, Iliacus), Psoas minor, Sartorius
What are the muscles of the Anterior Thigh (Extensors of the knee)?
Quadriceps femoris (Rectus femoris, Vastus lateralis, Vastus medialis, Vastus intermedius).
What are the muscles of the Medial Thigh (Adductors of the Thigh)?
Adductor longus, Adductor brevis, Adductor magnus, Gracilis, Obturator Externus
What is the origin of Pectineus?
pecten of the pubis
What is the insertion of Pectineus?
pectineal line of the femur
What is the function of Pectineus?
adducts, flexes, and medially rotates the thigh
What compartment is Pectineus in?
Anterior Thigh
What innervates Pectineus?
femoral nerve and possibly the anterior division of the obturator nerve
What supplies blood to Pectineus?
medial femoral circumflex a.
What is the origin of Iliopsoas?
iliac fossa; bodies and transverse processes of lumbar vertebrae
What is the insertion of Iliopsoas?
lesser trochanter of the femur
What is the function of Iliopsoas?
flexes the thigh; flexes and laterally bends the lumbar vertebral column
What innervates the Iliopsoas?
branches of the ventral primary rami of spinal nerves L2-L4; branches of the femoral nerve
What compartment is Iliopsoas in?
Anterior Thigh
What supplies blood to Iliopsoas?
iliolumbar a.
What combines to make Iliopsoas?
Iliacus and Psoas major
What is the origin of Psoas major?
bodies and transverse processes of lumbar vertebrae
What is the insertion of Psoas major?
lesser trochanter of femur (with iliacus) via iliopsoas tendon
What are the functions of Psoas major?
flexes the thigh; flexes & laterally bends the lumbar vertebral column
What innervates Psoas major?
branches of the ventral primary rami of spinal nerves L2-L4
What compartment is Psoas major in?
Anterior thigh
What supplies blood to Psoas major?
subcostal a., lumbar aa.
What is the origin of Iliacus?
iliac fossa and iliac crest; ala of sacrum
What is the insertion of Iliacus?
lesser trochanter of the femur
What are the functions of Iliacus?
flexes the thigh; if the thigh is fixed it flexes the pelvis on the thigh
What innervates Iliacus?
femoral nerve
What supplies blood to Iliacus?
iliolumbar a.
What compartment is Iliacus in?
Anterior thigh
What does Iliacus combine with to make Iliopsoas?
Psoas major
What is the origin of Psoas minor?
bodies of the T12 & L1 vertebrae
What is the insertion of Psoas minor?
iliopubic eminence at the line of junction of the ilium and the superior pubic ramus
What are the functions of Psoas minor?
flexes & laterally bends the lumbar vertebral column
What innervates Psoas minor?
branches of the ventral primary rams of spinal nerves L1-L2
What supplies blood to Psoas minor?
lumbar aa.
What is the origin of Sartorius?
anterior superior iliac spine
What is the insertion of Sartorius?
medial surface of the tibia (pes anserinus)
What are the functions of Sartorius?
flexes, abducts and laterally rotates the thigh; flexes leg
What innervates Sartorius?
femoral nerve
What supplies blood to Sartorius?
lateral femoral circumflex a., saphenous a.
What does Sartorius mean?
“Tailor” It helps cross the leg.
What compartment is Sartorius in?
Anterior thigh
What compartment is Psoas minor in?
Anterior thigh
What is the origin for Quadriceps femoris?
lateral border of the ischial tuberosity
What is the insertion for Quadriceps femoris?
quadrate line of the femur below the intertrochanteric crest
What is the function of Quadriceps femoris?
laterally rotates the thigh
What innervates Quadriceps femoris?
nerve to the quadratus femoris m.
What supplies blood to Quadriceps femoris?
inferior gluteal a.
What muscles make up the Quadriceps femoris?
Rectus femoris, Vastus lateralis, Vastus intermedius, Vastus medialis
What compartment is the Quadriceps femoris in?
Anterior Thigh
What is the origin of Rectus femoris?
straight head: anterior inferior iliac spine; reflected head: above the superior rim of the acetabulum
What is the insertion of Rectus femoris?
patella and tibial tuberosity (via the patellar ligament)
What is the function of Rectus femoris?
extends the leg, flexes the thigh
What innervates Rectus femoris?
femoral nerve
What supplies blood to Rectus femoris?
lateral circumflex femoral a.
What muscle is Rectus femoris part of?
Quadriceps femoris
What compartment is Rectus femoris in?
Anterior thigh
What is the origin of Vastus lateralis?
lateral intermuscular septum, lateral lip of the linea aspera and the gluteal tuberosity
What is the insertion of Vastus lateralis?
patella and medial patellar retinaculum
What is the function of Vastus lateralis?
extends leg
What innervates Vastus lateralis?
femoral nerve
What supplies blood to Vastus lateralis?
lateral femoral circumflex a., perforating branches of the deep femoral a.
What muscle group is Vastus lateralis part of?
Quadriceps femoris
What is the origin of Vastus Intermedius?
anterior and lateral surface of the femur
What is the insertion of Vastus Intermedius?
patella
What is the function of Vastus Intermedius?
extends the leg
What innervates Vastus Intermedius?
femoral nerve
What supplies blood to Vastus Intermedius?
lateral femoral circumflex a.
What compartment is Vastus Intermedius in?
Anterior Thigh
What compartment is Vastus lateralis in?
Anterior Thigh
What muscle group is Vastus Intermedius part of?
Quadriceps femoris
What is the origin of Vastus medialis?
medial intermuscular septum, medial lip of the linea aspera
What is the insertion of Vastus medialis?
patella and medial patellar retinaculum