Quiz 3- Thigh Muscles Flashcards Preview

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Flashcards in Quiz 3- Thigh Muscles Deck (26):
1

External Oblique

Origin: External Surfaces of Ribs 5-12
Insertion: Linea Alba, Pubic Tubercle, Anterior Half of Iliac Crest
Action: Compresses and Supports Abdominal Viscera, Flexes and Rotates Trunk
Nerve: Ventral Rami of 6 Inferior Thoracic Nerves
Blood Supply: Superior and Inferior Epigastric Arteries

2

Internal Oblique

Origin: Thoracolumbar Fascia, Anterior 2/3 of Iliac Crest, Lateral Half of Inguinal Ligament
Insertion: Inferior Borders of Ribs 10-12, Linea Alba, Pubis via Conjoint Tendon
Action: Compresses and Supports Abdominal Viscera, Flexes and Rotates Trunk
Nerve: Ventral Rami of 6 Inferior Thoracic and First Lumbar Nerves
Blood Supply: Superior and Inferior Epigastric and Deep Circumflex Iliac Arteries

3

Transverse Abdominis

Origin: Internal Surfaces of Costal Cartilages 7-12, Thoracolumbar Fasic, Iliac Crest, Lateral Third of Inguinal Ligament
Insertion: Linea Alba, Pubic Crest, and Pecten Pubis via Conjoint Tendon
Action: Rotation, Flexion, and Lateral Flexion0
Nerve: Ventral Rmai of 6 Inferior Thoracic and First Lumbar Nerves
Blood Supply: Deep Circumflex Iliac and Inferior Epigastric Arteries

4

Rectus Abdominis

Origin: Pubic Symphysis, Pubic Crest
Insertion: Xiphoid Process, Costal Cartilages 5-7
Action: Flexes Trunk, Compresses Abdominal Viscera
Nerve: Ventral Rami of 6 Inferior Thoracic Nerves
Blood Supply: Superior and Inferior Epigastric Arteries

5

Gluteus Maximus

Origin: Ilium Posterior to Posterior Gluteal Line, Dorsal Surface of Sacrum/Coccyx, Sacrotuberous Ligament
Insertion: Iliotibial Tract and Tuberosity of Femur
Action: Extends Flexed Thigh, Assists in Lateral Rotation, and Abducts Thigh
Nerve: Inferior Gluteal Nerve
Blood Supply: Inferior Gluteal Arteries

6

Gluteus Medius

Origin: Lateral surface of Ilium
Insertion: Lateral surface of Greater Trochanter of Femur
Action: Abducts/medially rotates thigh at hips and steadies pelvis on leg with opposite leg is raised
Nerve: Superior Gluteal Nerve
Blood Supply: Superior Gluteal Artery

7

Gluteus Minimus

Origin: Lateral surface of Ilium
Insertion: Anterior Surface of Greater Trochanter of Femur
Action: Abducts/medially rotates thigh at hips and steadies pelvis on leg when opposite leg is raised
Nerve: Superior Gluteal Nerve
Blood Supply: Superior Gluteal Artery

8

Tensor Fascia Latae

Origin: Anterior Superior Iliac Spine and Anterior part of Iliac Crest
Insertion: Iliotibial Tract
Action: Abducts, medially rotates, and flexes thigh at hip. Helps keep knee extended
Nerve: Superior Gluteal Nerve
Blood Supply: Ascending branch of Lateral Circumflex Femoral Artery

9

Sartorius

Origin: Anterior Superior Iliac Spine and notch below it
Insertion: Superior part of Medial surface of Tibia
Action: Abducts, Laterally Rotates, and Flexes thigh; Flexes knee
Nerve: Femoral Nerve
Blood Supply: Profunda Femoris and Lateral Circumflex Femoral Arteries

10

Rectus Femoris

Origin: Anterior Inferior Iliac Spine and Ilium Superior to Acetabulum
Insertion: Base of Patella and Tibial Tuberosity via patellar Ligament
Action: Extends leg at knee and flexes thigh at hip
Nerve: Femoral Nerve
Blood Supply: Profunda Femoris and Lateral Circumflex Femoral Arteries

11

Vastus Lateralis

Origin: Greater Trochanter, Lateral Lip of Linea Aspera of Femur
Insertion: Base of Patella and to Tibial Tuberosity via Patellar Ligament
Action: Extends leg at Knee
Nerve: Femoral Nerve
Blood Supply: Lateral Circumflex Femoral and Profunda Femoris Arteries

12

Vastus Medialis

Origin: Intertrochanteric Line, Medial lip of Linea Aspera of Femur
Insertion: Base of Patella and to Tibial Tuberosity via Patellar Ligament
Action: Extends leg at Knee
Nerve: Femoral Nerve
Blood Supply: Femoral and Profunda Femoris Arteries

13

Vastus Intermedius

Origin: Anterior and Lateral surfaces of body of Femur
Insertion: Base of Patella and to Tibial Tuberosity via Patellar Ligament
Action: Extends Leg at Knee
Nerve: Femoral Nerve
Blood Supply: Lateral Circumflex Femoral and and Profunda Femoris Arteries

14

Adductor Longus

Origin: Body of Pubis Inferior to Pubic Crest
Insertion: Middle Third of Linea Aspera of Femur
Action: Adducts thigh at hip
Nerve: Obturator Nerve (Anterior Division)
Blood Supply: Profunda Femoris and Medial Circumflex Femoral Arteries

15

Adductor Brevis

Origin: Body and Inferior Pubic Ramus
Insertion: Pectineal Line and Proximal Part of Linea Aspera of Femur
Action: Adducts thigh at Hip, Weak Hip Flexor
Nerve: Obturator Nerve
Blood Supply: Profunda Femoris, Medial Circumflex Femoral, and Obturator Arteries

16

Adductor Magnus

Origin: Inferior Pubic Ramus, Ramus of Ischium (Hamstring part is the Ischial Tuberosity)
Insertion: Gluteal Tuberostiy, Linea Aspera, Medial Supracondylar Line (Hamstring Part is the Adductor Tubercle of Femur)
Action: Adductor Part: Adducts and Flexes Thigh; Hamstring Part: Extends Thigh
Nerve: Adductor Part: Obturator Nerve; Hamstring Part: Sciatic Nerve (Tibial Division)
Blood Supply: Femoral, Profunda Femoris, and Obturator Arteries

17

Gracilis

Origin: Body and Inferior Ramus of Pubis
Insertion: Superior Part of Medial Surface of Tibia
Action: Adducts thigh at hips and stabilizes joint, acts with Psoas Major
Nerve: Obturator Nerve
Blood Supply: Profunda Femoris Artery, Medial Circumflex Femoral Artery

18

Piriformis

Origin: Anterior Surface of Sacral Segments 2-4, Sacrotuberous Ligament
Insertion: Superior Border of Greater Trochanter of Femur
Action: Laterally rotates extended thigh, Abducts flexed thigh at hip
Nerve: Ventral Rami of L5, S1, S2
Blood Supply: Superior and Inferior Gluteal Arteries, Internal Pudendal Artery

19

Quadratus Femoris

Origin: Lateral Margin of Ischial Tuberosity
Insertion: Quadrate Tubercle on Intertrochanteric Crest of Femur
Action: Laterally Rotates Thigh at Hip
Nerve: Nerve to Quadratus Femoris
Blood Supply: Medial Circumflex Femoral Artery

20

Pectineus

Origin: Superior Ramus of Pubis
Insertion: Pectineal line of Femur
Action: Adducts and Flexes Thigh; Assists with Medial Rotation
Nerve: Femoral Nerve
Blood Supply: Medial Circumflex Femoral Artery and Obturator Artery

21

Psoas Major

Origin: Sides of T12-L5 and discs between; Transverse Processes of all Lumbar
Insertion: Lesser Trochanter of Femur
Action: Flexes thigh at hip joint and stabilizes the joint
Nerve: Anterior Rami of Lumbar Nerves (L1, L2, L3)
Blood Supply: Lumbar branches of Iliolumbar Artery

22

Psoas Minor

Origin: Sides of T12-L1 and discs
Insertion: Pectineal Line, Iliopectineal Eminence via Iliopectineal Arch
Action: Flexes thigh at hip joint and stabilizes the joint
Nerve: Anterior Rami of Lumbar Nerves (L1, L2)
Blood Supply: Lumbar branches of Iliolumbar Artery

23

Iliacus

Origin: Iliac Crest, Iliac Fossa, Ala of Sacrum, and Anterior Sacroiliac Ligaments
Insertion: Tendon of Psoas Major, Lesser Trochanter, and Femur
Action: Flexes thigh at hip joint and stabilizes the joint
Nerve: Femoral Nerve (L2,L3)
Blood Supply: Iliac Branches of Iliolumbar Artery

24

Semitendinosus

Origin: Ischial Tuberosity
Insertion: Superior Part of of Medial Surface of Tibia
Action: Flexes Knee, Extends Thigh
Nerve: Sciatic Nerve (Tibial Division)
Blood Supply: Perforating branch of Profunda Femoris and Medial Circumflex Femoral Arteries

25

Semimembranous

Origin: Ischial Tuberostiy
Insertion: Posterior part of Medial Condyle of Tibia
Action: Flexes Leg, Extends Thigh
Nerve: Sciatic Nerve (Tibial Division)
Blood Supply: Perforating branch of Profunda Femoris and Medial Circumflex Femoral Arteries

26

Biceps Femoris

Origin: Long Head: Ischial Tuberosity; Short Head: Linea Aspera and Lateral Supracondylar Line of Femur
Insertion: Lateral Side of Head of Fibula
Action: Flexes and Laterally Rotates Leg, Extends thigh at High
Nerve: Sciatic Nerve (Long=Tibial Division) (Short=Common Fibular Division)
Blood Supply: Perforating Branches of Profunda Femoris, Inferior Gluteal, and Medial Circumflex Femoral Arteries