Muscles!! (Origin, Insertion, Action)

Front 1

Trapezius

Back 1

Origin: External occipital Protrubence. Spinous process C1-T12.
Insertion: Acromion, clavicle, superior spine of scapula.
Action: Elevates scapula, upward rotation of scapula.

Front 2

Soleus

Back 2

Origin: Fibula, Tibia,
Insertion: Calcaneus
Action: Plantar flexion of the foot.

Front 3

Gluteus Maximus

Back 3

Origin: Ilium, coccyx, saccrum.
Insertion: gluteal tuberosity of femur.
Action: extension of hip, rotation of thigh.

Front 4

Pectoralis Major

Back 4

Origin: clavicle, sternum, upper 6 ribs.
Insertion: bicipital sulcus.
Action: Adducts humerus, medially rotates humerus.

Front 5

Deltoid

Back 5

Origin: acromion of scapula, scapula spine.
Insertion: Deltoid tuberosity of humerus.
Action: abducts arm, medially and laterally rotates arm.

Front 6

Gastrocnemius

Back 6

Origin: Medial- just above medial condyle of femur. Lateral- above lateral condyle of femur.
Insertion: Calcaneus
Action: plantar flex ankle.

Front 7

Latismus Dorsi

Back 7

Origin: spinous process, T7-L5, iliac crest, lower ribs
Insertion: interubercle groove.
Action: adduction & rotation of humerus, downward rotation of scapula.

Front 8

Sternocleidoidmastoid

Back 8

Origin: sternum, clavicle
Insertion: mastoid process
Action: Rotates neck & flexion of neck

Front 9

Hamstrings Group
1. Biceps Femoris
2. Semitendonsus
3. Semimembranosus

Back 9

Origins:
1. Long- ischial tuberosity, Short- linea aspera of femur.
2. ischial tuberosity.
3. ischial tuberosity.
Insertions:
1. head of fibula & lateral condyle of tibia.
2. medial shaft of tibia.
3. medial condyle of tibia.
Actions:
1. knee flexion and hip extension
2. knee flexion and hip extension
3. knee flexion and hip extension

Front 10

Biceps Brachii

Back 10

Origin: long head- supra glenoid cavity, short head- coracoid process.
Insertion: radial tuberosity.
Action: Arm flexion @ elbow & shoulder.

Front 11

Quadriceps Group
1. Vastus Intermedius
2.Vastus Medialis
3.Vastus Lateralis
4. Rectus Femoris

Back 11

Origins:
1. anterior lateral surface of femur
2. linea aspea of femur.
3. greater trochanter of femur.
4. anterior inferior iliac spine
Insertions:
1. patella tendon to tibial tuberosity.
2. patella tendon to tibial tuberosity.
3. patella tendon to tibial tuberosity.
4. patella tendon to tibial tuberosity.
Actions:
1. knee extension and hip flexion.
2. knee extension and hip flexion.
3. knee extension and hip flexion.
4. knee extension and hip flexion.

Front 12

Rotator Cuff Group
1. Subscapularis
2. Supraspinatus
3.Infraspinatus
4. Teres Minor

Back 12

Origins
1. subscapularis fossa
2. supraspinatus fossa
3. infraspinatus fossa of scapula
4. lateral border of scapula
Insertions
1. lesser tubercle of the humerus
2. lesser tubercle of the humerus
3. greater tubercle of humerus.
4. greater tubercle of humerus.
Actions
1. medial rotation of humerus
2. shoulder abduction
3. shoulder lateral rotation
4. shoulder extension and internal rotation.

Front 13

Triceps

Back 13

Origin: Long- infraglenoid tubercle of the scapula
Lateral- upper half of the posterior surface of the shaft of the humerus.
Medial- posterior shaft of humerus, distal to radial groove.
Insertions: posterior of the olecranon process of the ulna, deep fascia of the antebrachium
Actions: arm adduction, elbow extension.

Front 14

Gluteus (Medius)

Back 14

Origin: Outer aspect of ilium, upper fascia
Insertion: superior aspect of greater trochanter
Action: abduction and medial rotation of the thigh

Front 15

Gluteus (Minimus)

Back 15

Origin: outer aspect of ilium
Insetion: greater trochanter
Action: abduct and medial rotation of the thigh.

Front 16

Diaphragm

Back 16

Origin:
Sternal- Ziphoid process
Costal- lower 6 ribs
Lumbar- upper 2-3 lumbar vertebrae
Insertion: central tendon
Action: draws central tendon down during inspiration, increases volume of thoracic cavity.

Front 17

Sartoris

Back 17

Origin: anterior superior iliac spine
Insertion: upper medial surface of tibia body.
Action: flexes hip and knee, laterally rotates thigh

Front 18

Gracils

Back 18

Origin: body of pubis and inferor pubic ramus
Insertion: medial surface of proximal tibia, inferior to tibial condyle.
Action: adducts thigh, flexes knee, medially rotates tibia.