Muscles of Facial Expression: Anterior View

Home , Buccinator muscle, Cricothyroid muscle, Digastric muscle, Longus capitis muscle, Mylohyoid muscle, Nasalis muscle

Muscles ofFacial Expression: Anterior View

SEE ALSO PLATE 48 )

Galea aponeurotica

Frontal belly (frontalis) of epicranius muscle

Procerus muscle

Corrugator supercilii muscle

O rbitbal Part } of orbicularis oculi muscle Pa1 pe ra 1part

Levator labii superioris alaeque nasi muscle

Transvers e part } of nasalis muscle Alar part

Levator labii superioris muscle

-1-.:..l~:-;::::._,..:----- Depressor anguli oris muscle

--=-~~71--;------Depressor labii inferioris muscle '""li":-;;=-;t~c ~\("f-;;filiW5i.7.;:i;;i~-L------Mentalis muscle

Platysma muscle Co urse of wrinkle lines of sk in is transverse to fiber direction of facial muscles. Elliptical incisions for removal of skin tumors conform to direction of wrinkle lines

, .... --- ...... _,. lr~ -;: ... ______, .~~ ~ CIBA·GEIGY Muscles of Facial Expression: Lateral View

Ga lea aponeurotica Auricularis anterior muscle

Auricularis superior muscle Orbital part Orbicularis ocu li muscle p b Auricu laris posterior muscle { a1 pe ra 1part Occipital belly Frontal belly (frontalis) of epicra nius muscle of epicran ius (occipitalis) muscle

Corrugator su percilii muscle (frontalis and orbiculari s oculi , partially cut away)

Procerus muscle

Levator lab ii superi o ri s muscle\

Levator labii superi oris \ ~ alaeque nasi muscle (partia ll y cut away)

Parotid fascia

Zygomaticus minor muscle Superficial ce rvi ca l fascia of posterior (lateral) triangle over levator scapulae and splenius capitis muscles

Dep ressor anguli oris muscle

Buccinator muscle

Risorius muscle

Clavicle

Pectoralis majo r fascia

01 AT£: ')1 Muscles of Neck: Lateral View

Parotid gland (cut) Masseter muscle

Mastoid process

Styloid process

Digastric muscle Body of (posterior belly) mandible

Middle pharyngeal constrictor muscle Digastric muscle (anterior belly) Splenius muscle

Levator scapulae muscle

Posterior Omohyoid muscle Scalene muscles Middle (superior belly) { Anterior Sternohyoid muscle Brachial plexus Inferior pharyngeal constrictor muscle

Acromion

Omohyoid muscle (inferior belly)

Sternal head } Sternocleidomastoid muscle Clavicular head Pectoralis major muscle

PLATE 22 Muscles of Neck: Anterior View

Digastric muscle (anterior belly) Masseter muscle Mylohyoid muscle Parotid gland~ ~ Submandibular gland

Platysma muscle ~ Fibrous loop for (cutaway) intermediate digastric tendon

Mastoid process Stylohyoid muscle

External carotid artery

Internal jugular vein

·:...:----r-.J-..:;...... ,,....----.1------Omohyoid muscle ~l~t"jtf{f-~.:_-f-____ (superior belly) Sternohyoid muscle Superficial (investing) cervical fascia and cut edge , _L~,._-- Sternothyroid muscle

Cricoid carti Iage -----r;;::.:::_-=----2.:._.:__---;--~ Trapezius muscle

Deltoid muscle

Clavicle

Omohyoid muscle (inferior belly)

Visceral (pretracheal) fascia Pectoralis major muscle over thyroid gland and trachea Sternocleidomastoid Suprasternal space (of Burns) } muscle

Manubrium of sternum jugular notch

lf;? .~/ ~ CIBA-GEtGY lnfrahyoid and Suprahyoid Muscles