Muscles of the Thigh (Division, Origin, Insertion, Function)
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Content
0:00 Introduction
0:25 Division of the Thigh Muscles
0:41 Anterior Group
1:00 Quadriceps Femoris
2:03 Sartorius Muscle
2:25 Medial Group: Pectineus
2:49 Adductor Brevis
3:08 Adductor Longus
3:27 Adductor Magnus
3:56 Gracilis
4:18 Posterior Group
4:37 Biceps Femoris
5:10 Semitendinosus
5:26 Semimembranosus
Muscles of the Thigh
Anterior Group [2]
Medial Group [5]
Posterior Group [3]
Anterior Group [2]
Cover the entire anterior surface of the thigh
Common innervation: Femoral Nerve
Quadriceps Femoris
musculus quadriceps femoris
Recus Femoris
○ O: Anterior Inferior Iliac Spine
Vastus Lateralis
○ O: Lateral Lip of Linea Aspera
Vastus Medialis
○ O: Medial Lip of Linea Aspera
Vastus Intermedius
○ O: Anterior Surface of Femus
I: Tibial Tuberosity through Patellar Ligament
F:
Extension of the Leg
Flextion of Femur
Sartorius Muscle
musculus sartorius
O: Anterior Superior Iliac Spine
I: Tibial Tuberosity
Tubebrositas tibiae
F:
Flexion of Thigh and Leg
External Rotation of Thigh
Internal Rotation of Leg
Medial Group [5]:
Pectineus
musculus pectineus
O: Pecten Pubis
I: Pectineal line of Femur'
F:
Adduction + Flexion of Thigh
External Rotation of Thigh
Adductor Brevis
musculus adductor brevis
O: Inferior Pubic Ramus
Ramus inferior ossis pubis
I: Medial Lip of Linea Aspera
labium mediale linea aspera
F:
Adduction + Flexion of Thigh
External Rotation of Thigh
Adductor Longus
musculus adductor longus
O: Between Pubic Symphysis and Pubic Tubercle
I: Medial Lip of Linea Aspera
labium mediale linea aspera
F:
Adduction + Flexion of Thigh
External Rotation of Thigh
Adductor Magnus
musculus adductor longus
O:
Inferior Pubic Ramus
Ischial Ramus and Ischial Tuberosity
I:
Medial Lip of Linea Aspera
Media Epicondyle of Femur
F:
Adduction + Extension of Thigh
Internal Rotation of Thigh
Gracilis
musculus gracilis
O: Inferior Pubic Ramus
I: Tibial Tuberosity
Tubebrositas tibiae
F:
Adduction of Thigh
Flexion of Leg
Internal Rotation of Leg
Posterior Group [3]:
Extensors of the hip joint and flexors of the knee joint
Common innervation - Sciatic Nerve
Biceps Femoris
musculus biceps femoris
Long Head
O: Ischial Tuberosity
tuber ischiadicum
Short Head
○ O: Lateral Lip of Linea Aspera
I: Head of Fibula
caput fibulae
F:
Flexion of the Leg
External rotation of the Leg
Extension of the Thigh (long head)
Semitendinosus
musculus semitendinosus
O: Ischial Tuberosity
tuber ischiadicum
I: Tibial Tuberosity
tiberositas tibiae
F:
Flexion of the Leg
Internal rotation of the Leg
Extension of the Thigh
Semimembranosus
musculus semimembranosus
O: Ischial Tuberosity
tuber ischiadicum
I: Medial Condyle of Tibia
condylus medialis tibiae
F:
Flexion of the Leg
Internal rotation of the Leg
Extension of the Thigh
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