The Head

Head & Tongue Muscles:

#11) 

The Masseter Muscle: Functions in closing the mouth.

• Originates at the zygomatic arches

• Inserts at the lateral mandible

#10)

The Mylohyoideus muscle: Functions in lifting the floor of the mouth.

• Forms the floor of the oral cavity

• Can be found in between the rami of the mandible

#5)

The Orbicularis Oris muscle: Functions in pursing and closing the lips.

• Originates at medial aspects of the maxilla and mandible, perioral and muscles, modiolus

• Inserts at the skin and mucous membrane of the lips

#2)

The Levator Labii Superioris muscle: Functions in lifting the upper lip and plays an important role in the Flehmen response.

• Originates at the zygomatic process of the maxilla

• Inserts at the upper lip

#1)

The Levator Nasolabialis muscle: Functions in lifting the lips and dilating the nostril.

Can be seen from the frontal bone to the upper lip, and the outer rim of the nostril

• Originates at the upper surface of the skull above the eye

• Inserts at the nose and angle of the lip

#3)

The Caninus muscle: Functions in flaring the nostrils.

• Originates at the maxilla

• Inserts at the lateral aspects of the nares

#7)

The Zygomaticus muscle: Functions in pulling the lips laterally or smiling.

• Originates at the epimysium of the masseter muscle and the angle of the mouth

• Inserts at the angle of the lips

#8) 

The Buccinator muscle: Functions in moving food between the teeth and the tongue, assists in the formation of food bolus

• Originates at the aspects of the maxilla and mandible

• Inserts at muscle fibers running in both directions toward the maxilla and the mandible

#12)

The Orbicularis Oculi muscle: Functions in closing the eye

• Originates at nasal part of the frontal bone, frontal process of maxilla, lacrimal bone

• Inserts at skin of orbital region, lateral palpebral raphe, superior and inferior tarsal plates

The Pyterygoideus Muscle:

The Temporalis Muscle:

The Digastricus Muscle:

Genioglossus Muscle:

Hyoglossus Muscle: