APU6.7 Naming Skeletal Muscles

Section 7 Notes

1. Unit 6 The Muscular System DeFord Section 7 Naming Skeletal Muscles

2. Naming Skeletal Muscles By direction of muscle fibers rectus (straight, along long axis) transverse (perpendicular to long axis) oblique (at an angle) By relative size of the muscle maximus (largest) minimus (smallest) longus (longest) brevis (shortest)

3. Naming Skeletal Muscles By number of origins biceps (2 heads) triceps (3 heads) quadriceps (4 heads) By shape of muscle deltoid (triangular) trapezius (trapezoid shaped) serratus (saw- toothe ) rhomboid (rhombus shaped) orbicularis (circle) latissiumus (wide)

4. Naming Skeletal Muscles By action of muscle flexor (flexes bone) extensor (extends bone) adductor (moves bone toward midline) By location of muscle temporalis (temporal bone) frontalis (frontal bone) Anterior (front) By origin and insertion sterno (sternum) c leiodo ( clavical )