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ASMT- A&P2 #5
Muscles of the Thigh
| Question | Answer |
|---|---|
| Anterior Thigh Muscles | vastus intermedius, vastus medialis, vastus lateralis, rectus femoris, sartorius |
| Medial Thigh Muscles | pectineus, adductor brevis, adductor longus, adductor minimis, adductor magnus, gracilis |
| Posterior Thigh Muscles | biceps femoris, semitendinosus, semimembranosus |
| Which three muscles make up the "Pes Ansirene"? | gracilis, sartorius, semitendinosus |
| Pectineus (origin) | sup. pubic ramus |
| Pectineus (insertion) | pectineal line of femur |
| Pectineus (function) | adduction of hip |
| Pectineus (structure/relationship) | superficial to adductor brevis |
| Adductor Brevis (origin) | body of pubis |
| Adductor Brevis (insertion) | proximal 1/2 of linea aspera |
| Adductor Brevis (function) | adduction of hip |
| Adductor Brevis (structure/relationship) | deep to pectineus & adductor longus |
| Adductor Longus (origin) | body of pubis |
| Adductor Longus (insertion) | distal 1/2 of linea aspera |
| Adductor Longus (function) | adduction of the hip |
| Adductor Longus (structure/relationship) | superficial to adductor brevis |
| Adductor Minimis (origin) | inferior pubic ramus |
| Adductor Minimis (insertion) | proximal 1/4 of linea aspera |
| Adductor Minimis (function) | adduction of hip |
| Adductor Minimis (structure/relationship) | smallest of adductors |
| Adductor Magnus (origin) | inferior pubic ramus and ischial tuberosity |
| Adductor Magnus (insertion) | Adductor: entire linea aspera, Hamstring: adductor tubercle |
| Adductor Magnus (structure/relationship) | largest of adductors |
| Adductor Magnus (function) | adduction of hip, extension of hip |
| Gracilis (origin) | inferior pubic ramus/body |
| Gracilis (insertion) | medial surface of tibia |
| Gracilis (function) | adduction of hip, flexion of knee |
| Gracilis (structure/relationship) | most superficial adductor muscle, only adductor to cross knee joint, typically injured when someone complains of groin injury |
| Vastus Intermedius (origin) | lat. surface of femur |
| Vastus Intermedius (insertion) | tibial tuberosity via the patellar tendon |
| Vastus Intermedius (function) | extension of knee |
| Vastus Intermedius (structure/relationship) | deep to rectus femoris, b/w other vastus muscles |
| Vastus Lateralis (origin) | G. trochanter & entire linea aspera |
| Vastus Lateralis (insertion) | tibial tuberosity via patellar tendon |
| Vastus Lateralis (function) | extension of the knee |
| Vastus Lateralis (structure/relationship) | only muscle on lat. side, directly deep to IT band, can relieve some knee pain |
| Vastus Medialis (origin) | linea aspera |
| Vastus Medialis (insertion) | tibial tuberosity via patellar tendon |
| Vastus Medialis (function) | extension of the knee |
| Vastus Medialis (structure/relationship) | medial quadricep |
| Rectus Femoris (origin) | AIIS (anterior inferior iliac spine) |
| Rectus Femoris (insertion) | tibial tuberosity via patellar tendon |
| Rectus Femoris (function) | flexion of hip, extension of knee |
| Rectus Femoris (structure/relationship) | most superficial quadricep, does not touch femur |
| Sartorius (origin) | ASIS (anterior superior iliac spine) |
| Sartorius (insertion) | medial surface of tibia |
| Sartorius (function) | flexion of hip, flexion of knee, lateral rotation of hip when hip and knee are flexed |
| Sartorius (structure/relationship) | longest muscle in the body, "tailor's" or "hackie sac" muscle |
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