1. External obliques/obliques
Origin: Lower 8 ribs
Insertion: Iliac crest
Function: Flexes and rotates vertebral column
Flexion Rotation Extension
Dumbbell side bend stretches this
muscle.
Side jackknife strengthens.

2. Gastrocnemius/Calf muscle
Origin: Distal femur
Insertion: Calcaneous
Function: Plantar flexes foot and flexes knee
Plantar flexion Flexion Inversion
Work out on exercise bike to
strengthen.
Bend front knee, stretch out back
leg and put wait on front to stretch
muscle.

3. Biceps brachii/Biceps
Origin: Scapula of shoulder girdle
Insertion: Proximal radius
Function: Flexes elbow and supinates forearm.
Flexion Supination Extension
Use dumbbells to strengthen.
Position the arm against a wall and turn body away to
stretch.

4. Latissimus dorsi/Lats
Origin: Lower spine and iliac crest
Insertion: Proximal humerus
Function: Extends and adducts humerus
Extension Adduction Flexion
Pull-ups strengthen this muscle.
Overhead lat stretches this muscle.

5. Triceps brachii/Triceps
Origin: Shoulder girdle and proximal humerus
Insertion: Olecranon process of ulna
Function: Extends elbow
Extension Flexion Flexion
Pull arm over head and bend elbow to
stretch.
Push-ups strengthen.

6. SKELETAL MUSCLE SCRAPBOOK
Maritza Pérez-Díaz
Period 4
March 17, 2013