Muscles of the Thigh Flashcards
1
Q
Rectus femoris
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Anterior inferior iliac spine (straight head), ilium (superior to acetabulum)(reflected head)
- Distal Attachment: Tibial tuberosity
- Action: Extend leg at knee, flex thigh at hip joint
- Innervation: Femoral nerve
- Blood Supply: Profunda femoris, lateral circumflex femoral arteries
2
Q
Vastus Intermedius
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Anterior and lateral surfaces of body of femur
- Distal Attachment: Tibial tuberosity
- Action: Extends leg at knee
- Innervation: Femoral nerve
- Blood Supply: Profunda femoris, lateral circumflex femoral arteries
3
Q
Vastus lateralis
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Greater trochanter, lateral lip of linea aspera of femur
- Distal Attachment: Tibial tuberosity
- Action: Extends legs at knee
- Innervation: Femoral nerve
- Blood Supply: Profunda femoris, lateral circumflex femoral arteries
4
Q
Vastus medialis
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Intertrochanteric line, medial lip of linea aspera of femur
- Distal Attachment: Tibial tuberosity
- Action: Extends leg at knee
- Innervation: Femoral nerve
- Blood Supply: Femoral artery, profunda femoris artery
5
Q
Sartorius
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Anterior superior iliac spine
- Distal Attachment: Upper medial surface of tibia
- Action: Abducts, laterally rotates, flexes thigh; flexes knee joint
- Innervation: Femoral nerve
- Blood Supply: Femoral artery
6
Q
Pectineus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Superior ramus of pubis
- Distal Attachment: Pectineal line of femur
- Action: Adducts thigh, flexes thigh at hip, medially rotates thigh
- Innervation: Femoral nerve
- Blood Suppy: Medial circumflex artery, obturator artery
7
Q
Iliacus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Iliac fossa, iliac crest
- Distal Attachment: Lesser trochanter of femur
- Action: Flexes thigh at hip, stabilizes hip joint
- Innervation: Femoral nerve
- Blood Supply: Iliac branches of ilolumbar artery
8
Q
Psoas Major
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Transverse process of lumbar vertebrae, side bodies of T12-L5
- Distal Attachment: Lesser trochanter of femur
- Action: Flexes hip
- Innervation: L1, 2, 3 nerves
- Blood Supply: Lumbar arteries of iliolumbar artery
9
Q
Adductor brevis
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Body and inferior pubic ramus
- Distal Attachment: Medial side of linea aspera of femur
- Action: Adducts thigh at hip
- Innervation: Obturator nerve
- Blood Supply: Profunda femoris, medial circumflex femoral, obturator arteries
10
Q
Adductor longus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Body of pubis inferior to pubic crest
- Distal Attachment: Medial side of linea aspera of femur
- Action: Adducts thigh at hip, weakly flexes thigh
- Innervation: Obturator nerve
- Blood Supply: Profunda femoris, medial circumflex femoral arteries
11
Q
Adductur magnus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment:
- Adductor part: Ischiopubic ramus
- Hamstring part: Ischial tuberosity
- Distal Attachment:
- Adductor part: Gluteal tuberosity, linea aspera of femur
- Hamstring part: Adductor tubercle of femur
- Action:
- Adductor part: Adducts and weakly flexes thigh
- Hamstring part: Adducts and weakly extends thigh
- Innervation:
- Adductor part: Obturator nerve
- Hamstring part: Sciatic nerve (tibial division)
- Blood supply: Profunda femoris, femoral artery, obturator artery
12
Q
Gracilis
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Body and inferior ramus of pubis
- Distal Attachment: Upper medial surface of tibia (immediately posterior to attachment of sartorius)
- Action: Adducts thigh, flexes and medially rotates leg
- Innervation: Obturator nerve
- Blood Supply: Profunda femoris artery, medial circumflex femoral artery
13
Q
Gluteus maximus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Posterior gluteal line, sacrum (dorsal surface), occyx, sacrotuberous ligament
- Distal Attachment: Gluteal tuberosity, iliotibial tract
- Action: Extend thigh, lateral rotation of thigh, abduction of thigh
- Innervation: Inferior gluteal nerve
- Blood Supply: Inferior gluteal arteries
14
Q
Gluteus medius
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Between anterior and posterior gluteal lines of ilium
- Distal Attachment: Lateral surface of greater trochanter of femur
- Action: Abducts thigh, medially rotates thigh, stabilizes pelvis when opposite leg is raised
- Innervation: Superior gluteal nerve
- Blood Supply: Superior gluteal artery
15
Q
Gluteus minimus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Between inferior and anterior gluteal lines
- Distal Attachment: Anterior surface of greater trochanter of femur
- Action: Abducts thigh, medially rotates thigh, stabilizes pelvis when opposite leg is raised
- Innervation: Superior gluteal nerve
- Blood Supply: Superior gluteal artery
16
Q
Tensor fascial latae
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Suppy
A
- Proximal Attachment: Iliac crest between anterior superior iliac spine and tuberculum
- Distal Attachment: Iliotibial tract
- Action: Tenses fascia lata and counteracts backward pull of gluteus maximus, abducts thigh, medially rotates thigh, flexes thigh, aids in knee extension
- Innervation: Superior gluteal nerve
- Blood Supply: Lateral circumflex femoral artery
17
Q
Piriformis
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Sacrum (anterior surface)
- Distal Attachment: Greater trochanter
- Action: Laterally rotates extended thigh, abducts flexed thigh
- Innervation: Ventral rami of L5, S1, S2
- Blood Supply: Superior and inferior gluteal arteries, internal pudendal artery
18
Q
Superior gemellus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Ischial spine (outer surface)
- Distal Attachment: Greater trochanter of femur (medial surface)
- Action: Laterally rotates extended thigh
- Innervation: Nerve to obturator internus
- Blood Supply: Inferior gluteal artery, internal pudendal artery
19
Q
Obturator internus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Pelvic surface of obturator membrane and obturator foramen
- Distal Attachment: Greater trochanter of femur (medial surface) (posterior to neck of femur)
- Action: Laterally rotates extended thigh
- Innervation: Nerve to oburator internus
- Blood Supply: Internal pudendal artery, obturator artery
20
Q
Inferior gemellus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Upper ischial tuberosity
- Distal Attachment: Greater trochanter of femur (medial surface)
- Action: Laterally rotates extended thigh
- Innervation: Nerve to quadratus femoris
- Blood Supply: Medial circumflex femoral artery
21
Q
Quadratus femoris
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Ischial tuberosity (lateral margin)
- Distal Attachment: Intertrochanteric crest
- Action: Laterally rotates thigh at hip
- Innervation: Nerve to quadratus femoris
- Blood Supply: Medial circumflex femoral artery
22
Q
Obturator externus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: External surface of obturator foramen and obturator membrane
- Distal Attachment: Trochanteric fossa (posterior to neck of femur)
- Action: Laterally rotates thigh
- Innervation: Obturator nerve
- Blood Supply: Medial circumflex femoral artery, obturator artery
23
Q
Biceps femoris
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment:
- Long head: Ischial tuberosity
- Short head: Lateral side of linea aspera (NOT A HAMSTRING MUSCLE)
- Distal Attachment: Head of fibula (lateral side)
- Action: Flexes leg, laterally rotates leg when knee is flexed, extends thigh at hip
- Innervation:
- Long head: Sciatic nerve (tibial division L5-S2)
- Short head: Sciatic nerve (common fibular division)
- Blood Supply: Profunda femoris, inferior gluteal, medial circumflex femoral arteries
24
Q
Semitendinosus
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
A
- Proximal Attachment: Ischial tuberosity
- Distal Attachment: Tibia (upper medial surface)
- Action: Flexes leg, extends thigh, extends leg medially when knee is flexed
- Innervation: Sciatic nerve (tibial division)
- Blood Supply: Profunda femoris artery, medial circumflex femoral artery
25
**Semimembranosus**
Proximal Attachment
Distal Attachment
Action
Innervation
Blood Supply
* Proximal Attachment: Ischial tuberosity
* Distal Attachment: Medial tibial condyle (medial posterior surface)
* Action: Flexes leg, extends thigh, rotates leg medially when knee is flexed
* Innervation: Sciatic nerve (tibial division)
* Blood Supply: Profunda femoris artery, medial circumflex femoral artery
26
**Pes anserinus**
Made from what muscle tendons?
* Sartorius (anterior compartment)
* Gracilis (medial compartment)
* Semitendinosus (posterior compartment)
* Attached to proximal anteromedial part of tibia
27
**Popliteal fossa**
Boundaries
Contents
* Boundaries
* Gastrocnemius (lateral and medial heads) - inferior boundary
* Semimembranosus - upper medial boundary
* Biceps femoris - upper lateral boundary
* Contents:
* Tibial nerve (off sciatic nerve)
* Common fibular nerve (off sciatic nerve)
* Popliteal artery
* Popliteal vein
* Small saphenous vein
