Muscular System Pt. 9 - Muscles of the Pelvis & Thigh Flashcards
Which muscle combines with the Psoas Major?
Iliacus - Iliopsoas
Origin of Psoas Major
- Transverse processes of Lumbar Vertebrae
- Bodies of lumbar vertebrae
Insertion of Psoas Major
Lesser trochanter of femur
Actions of Psoas Major
- Hip (thigh) Flexion
- Lateral flexion of thigh
Hip flexion - lifting lower leg up in front of you
Origin of Iliacus
Iliac crest & Sacrum
Insertion of Iliacus
Lesser trochanter of femus
Actions of Iliacus
- Hip (Thigh) Flexion
- Lateral rotation of thigh
Same as psoas; hence why linked together
Origin of Tensor Fascia Lata (TFL)
Iliac Crest
Insertion of Tensor Fascia Lata
Into the Tibia via the iliotibial tract
Actions of Tensor Fascia Lata (TFL)
Hip abduction
Hip flexion
Origin of Gluteus Maximus
Sacrum, Coccyx and Iliac Crest
Most superficial of the lower limb muscles - more lateral and posterior
Insertion of Gluteus Maximus
Iliotibial Tract
Actions of Gluteus Maximus
- Hip extension
- Lateral rotation of hip
Extension of hip - lifting lower limb backwards
Where are Gluteal Medius & Minimus located with respect to the lower limb muscles?
More medial and anterior
Which gluteal muscles have a common origin, insertion and actions
Gluteal Medius and Minimus
Origin of Gluteal Medius and Minimus
Ilium
Medius is superficial to minimus
Insertion of Gluteal Medius and Minimus
Greater trochanter of femur
Actions of Gluteal Medius and Minimus
- Abduction of thigh
- Medial rotation of thigh
lower limb out to the side - abduction of thigh
What is the inguinal ligament?
Connective tissue attaching from ASIS to pubic bone
Origin of Sartorius
Anterior superior iliac spine
Muscle is connected to the hip joint and crosses the knee joint
Insertion of Sartorius
Medial surface of tibia
Actions of Sartorius
- Flexion of Thigh
- Lateral rotation of thigh
- Abduction of thigh
- Knee flexion
Knee flexion is possible because the muscle crosses the knee joint
What does Quadriceps Femoris mean?
4 muscles of the quad make up the femur
What are the muscles that make up the Quadriceps Femoris Group
Rectus Femoris (RF), Vastus Medialis (VM), Vastus Lateralis (VL) & Vastus intermedius (VI)