Muscles based on direction
-Rectus, transverse, oblique
Rectus
straight and parallel to the midline
Transverse
Perpendicular to the midline
Oblique
diagonal to the midline
Size
Maximus, minimus, longus, brevis, latissimus, longissimus, Magnus, major, minor, vastus
Maximus
largest
Minimus
smallest
Longus
long
Brevis
short
Latissimus
widest
Longissium
longest
Magnus
large
Minor
smaller
Vastus
huge
Shape
Deltoid, trapezius, serrates, rhomboid, pectinate, piriformate, pirifromis, platys, quadratus, gracillis
Deltoid
triangle
Trapezius
trapezoid
serratus
toothed together
Rhomboid
diamond shaped
Piriformis
Pear shaped
Platys
flat
Quadratus
Square
Gracilis
Slender
Flexer
Flexion: inward motion