NECK

Deep fascia of neck

Neck flexion

Neck extension

Neck rotation

head flexion	longus colli
head extension	rectus capitis posterior (minor , major ) , semispinalis capitis , splenius capitis
Neck flexion	sternocleidomastoid (together) , longus colli , longus capitis , rectus capitis anterior
Neck extension
Neck and head rotation	obliqus capitis inferior ,
Neck and head lateral flexion / side bend	rectus capitis lateralis , longissimus capitis
Neck skin tension	Platysma
turning	Sternocleidomastoid
of sternum	sternocleidomastoid
opening jaw / of mandible	digastric , mylohyoid
swallowing - of hyoid	stylohyoid , mylohyoid , geniohyoid
of hyoid bone	sternohyoid , sternothyroid , thyrohyoid , omohyoid
of ribs	scalene (anterior,medius,posterior)

TRIANGLES OF NECK

ANTERIOR TRIANGLE OF NECK

POSTERIOR TRIANGLE OF NECK