Where is the Adductor Brevis?
Function of the Adductor Brevis?
Adduction of the thigh
Origin of the Adductor Brevis?
Pubis (body and inferior ramus)
Insertion and Innervation of the Adductor Brevis?
Femur (linea aspera)
Obturator nerve
Where is the Adductor Longus?
Function of the Adductor Longus?
Adduction of thigh
Origin of the Adductor Longus?
Pubis (body and inferior ramus)
Insertion and Innervation of the Adductor Longus?
Femur (linea aspera)
Obturator nerve
Where is the Adductor Magnus?
Function of the Adductor Magnus?
Adduction of thigh
Extension of thigh
Origin of the Adductor Magnus?
Pubis (inferior ramus)
Ischium (ramus and tuberosity)
Insertion and Innervation of the Adductor Magnus?
Femur (gluteal tuberosity, linea aspera, and adductor tubercle)
Obturator and tibial nerves
Where is the Gracilis?
Function of the Gracilis?
Adduction of thigh
Flexion of leg
Origin of the Gracilis?
Pubis (body and inferior ramus)
Insertion and Innervation of Gracilis?
Tibia (proximal medial shaft)
Obturator nerve
More facts about the Gracilis
Weak muscle in humans
Used for muscle transplants
Where is the Illiopsoas?
Function of the Iliopsoas?
Flexion of thigh
Origin of the Iliopsoas?
Iliacus part: ilium (iliac fossa)
Psoas part: body of T12 and all lumbar vertebrae (bodies, transverse processes, and associated intervertebral discs)
Insertion and Innervation of the Iliopsoas?
Femur (lesser trochanter)
Iliacus part: femoral nerve
Psoas part: ventral rami of L2-3 spinal nerves
Additional Info of Iliopsoas?
Iliopsoas formed by union of iliacus and psoas muscles
Most powerful flexor of thigh; also active during trunk flexion, especially against resistance (e.g., during sit-ups)
Iliopsoas has minor role as a lateral rotator of thigh
Where is the Obturator Externus?
Function of the Obturator Externus?
Lateral rotation of thigh
Origin of the Obturator Externus?
Pubis
Ischium
Obturator membrane (external surface)
Pubis and ischium at margin of obturator membrane
Insertion and Innervation of the Obturator Externus?
Femur (greater trochanter)
Obturator nerve
Where is the Pectineus?
Function of the Pectineus?
Adduction of thigh
Flexion of thigh
Medial rotation of thigh
Origin of the Pectineus?
Pubis (body and superior ramus)
Insertion and Innervation of the Pectineus?
Femur (proximal posterior shaft)
Femoral nerve
Where is the Quadriceps Femoris?
Function of the Quadriceps Femoris?
Extension of leg
Flexion of thigh at hip joint (rectus femoris only)
Origin of the Quadriceps Femoris?
Vastus lateralis, vastus intermedius, vastus medialis: femur (shaft)
Rectus femoris: ilium (anterior inferior iliac spine)
Insertion and Innervation of Quadriceps Femoris?
Patella (via a common, quadriceps tendon)
Femoral nerve
What muscles make up the Quadriceps Femoris?
rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis
Function of the Quadriceps tendon?
extends from patella to tibial tuberosity as patellar ligament
What muscle of the quadriceps group is the only one that acts on the thigh
Rectus femoris
Where is the Rectus Femoris?
Function of the Rectus Femoris?
Extension of leg
Flexion of thigh
Origin of the Rectus Femoris?
Anterior inferior iliac spine
Groove superior to acetabulum
Insertion and the Innervation of the Rectus Femoris?
Patella
Femoral
Where is the Sartorius?
Function of the Sartorius?
Flexion of thigh
Lateral rotation of thigh
Abduction of thigh
Flexion of leg
Origin of the Sartorius?
Ilium (anterior superior iliac spine)
Insertion and Innervation of the Sartorius?
Tibia (proximal medial shaft)
Femoral nerve
What is the longest muscle in the body?
Sartorius
Where is the Tendon of the Quadriceps Femoris?
Function of the Tendon of the Quadriceps Femoris?
Extension of leg
Flexion of thigh at hip joint (rectus femoris only)
Origin of the Tendon of the Quadriceps Femoris?
Vastus lateralis, vastus intermedius, vastus medialis: femur (shaft)
Rectus femoris: ilium (anterior inferior iliac spine)
Insertion and Innervation of the Tendon of the Quadriceps Femoris?
Patella (via a common, quadriceps tendon)
Femoral nerve