2.2 Head + neck muscle actions

For Frank's section do ask if these answers are allowed, i pulled some from the lab manual and the insertion/origin file from BP

Frontalis (part of epicranius)

Raises Eyebrows

Orbicularis oculi (eyelid)

Closes eyes

Ciliary

FUNCTION NOT NEEDED

Galea aponeurotica ‐ An Aponeuroses (tendon)

ACTION NOT NEEDED

Occipitalis (part of epicranius)

Pulls Scalp Posteriorly

temporal fascia

ACTION NOT NEEDED

temporalis

closes jaw

Levator labii superioris

opens lips (superior lips)

Levator anguli oris

lower angle of mouth

Zygomaticus minor

Raise lips / smiling

Zygomaticus major

Raise lips / smiling

Masseter

Closes Jaw (chewing muscle)

Risorius

Draws lips laterally (also smiling muscle)

Mentalis

Wrinkles chin

Depressor labii inferioris

Draws lip inferiorly

Depressor anguli oris (Trangularis)

lower angle of the mouth

Orbicularis oris

Closes lips

Buccinator

Whistling (also holds food in mastication)

Mylohyoid

elevates hyoid

Digastric

elevates hyoid

Stylohyoid

elevates Hyoid

sternohyoid

depresses hyoid

Sternothyroid

depresses hyoid

THYROHYOID

depresses hyoid

Omohyoid

depresses hyoid

sternocleidomastoid (Sternal and clavicular position idk if func are needed for those yet)

neck flexion forward

platysma

tenses skin of neck

Levator scapulae

laterally flexes neck

scalenes - middle

flex/rotate neck

scalenes - anterior

flex/rotate neck

trapezius

extend head/extend scapula

splenius capitis

extend head/extend scapula

Semispinalis capitis

extend head and vertebral column