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Published byDayna Atkinson Modified over 9 years ago
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Anatomy Muscles
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Muscles of the Hip 1. Iliacus 2. Psoas Major 7. Gluteus minimus
8. Gluteus medius 10. Gluteus maximus
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1. Iliacus Origin – Iliac Insertion – tendon of Psoas
Action – Hip flexion, (with Psoas major)
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2. Psoas Major Origin – T12 and Lumbar vertebrae
Insertion – lesser trochanter, femur Action - hip flexion
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7. Gluteus Minimus 8. Gluteus Medius
Origin – Iliac, lateral surface Insertion – greater trochanter Action - abduction
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10. Gluteus Maximus Origin – iliac, sacrum, coccyx
Insertion – gluteal tuberosity, IT band Action – extension of thigh
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Anterior Muscles of the Thigh
11. Vastus lateralis 12. Vastus medialis 13. Vastus intermedius 14. Rectus Femoris 15. Sartorius
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Muscles of the Thigh Quadriceps
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11.Vastus Lateralis 13.Vastus Intermidius 12.Vastus Medilais Origin – Greater Trochanter Insertion – tibia via patella Action – leg extension
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14. Rectus Femoris Origin – Ilium, acetabulum
Insertion – tibia via patella Action – leg extension PLUS some hip flexion
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15. Sartorius I am the longest muscle Origin – iliac spine
Insertion – tibia, medial shaft Action – lateral rotation of thigh I am the longest muscle
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Posterior Muscles of the Thigh
16. Semimembranosus 17. Semitendinosus 18. Biceps femoris
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16.Semimembranosus 17.Semitendinosus
Origin – ischial tuberosity Insertion – tibia medial condyle Action – leg flexion
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18. Biceps Femoris Origin – ischial tuberosity (long)
linea aspera of femur (short) Insertion – head of fibula Action – leg flexion
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Adductor Muscles of the Thigh
19. Adductor magnus 20. Adductor brevis 21. Adductor longus
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19. Adductor magnus 20. Adductor brevis 21. Adductor longus
Origin – Pubis Insertion - Femur Action – adduction
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Muscles of the Leg
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24.Extensor digitorum longus
The tendon splits at the Ankle into 5 branches 4 to the lesser toes 1 to the lateral foot
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25.Extensor hallucis longus
Hallux means big toe
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26. Tibialis Anterior Origin – Tibia, lateral
Insertion – medial tarsal Action – dorsi flexion
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28. Flexor Hallucus longus 30. Flexor digitorum longus
Antagonists to the extensors!
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31. Gastrocnemius Origin – Femur lateral condyles
Insertion - Tendocalcaneus Action – Plantar flexion
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31a. Soleus
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Muscles of the Trunk
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Pectoralis Minor Origin Ribs Insertion – Coracoid
Action – brings extended arm down + adduction
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Pectoralis Major Origin Sternum Insertion – Humerus
Action – brings extended arm down + adduction
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Rectus and Transverse Abdominus
Linea Alba Aponeurosis
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Internal and External Obliques
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Muscles of the Back
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20. Latissumus Dorsi Origin – T7-T12, all lumbar and sacral, iliac crest Insertion – humerus, bicipital groove Action – brings extended arm down + adduction
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21. Trapezius Origin – Occipital, C7 and Thoracic
Insertion – spine of scapula Action on Scapula Cervical - up Middle - midline Lower - down
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16. Rhomboids Action – bring Scapula towards each other
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Muscles of the Shoulder
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Rotator Cuff Anterior 5. Subscapularis
Origin – Under Scapula Insertion – humerus Action – lateral rotation
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Rotator Cuff Posterior
Origin – 1.Supraspinatus, above spine 2.Infraspinatus, below 3.Teres minor, belower Insertion – Humerus Action – Outward Rotation
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6. Deltoid Origin – lateral 1/3 of clavicle, acromion, scapula
Insertion – humerus, deltoid tuberosity Action – raise the arm
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Deltoid Detailed look at the origin
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Muscles of the Arm
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8.Brachialis Origin – humerus, below deltoid insertion
Insertion – ulna Action – Arm Flexion
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9.Biceps Brachii Origin – LH, Scapula above GH articulation SH, corocoid process Insertion – Radial tuberosity Action – Arm Flexion
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10.Triceps Brachii O – Long, posterior Lateral, lateral Medial, lower
I – Ulna, Olecranon F – Extension, elbow
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Flexors Origin – Insertion – Action –
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Origin – Insertion – Action –
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8.Sternocleidomastoid Origin – manubrium, sternal head of clavicle
Insertion – mastoid process Action – turns the head, flexes the head if both are contracted
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15. Masseter
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3. Orbicularis Oculi Encircles the eye
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6. Orbicularis Oris Encircles the mouth
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Fin
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