Bones and Muscles of Head and Neck

Movement accomplished by a muscle when the muscle fibers contract

Action

What muscles open the jaw

Anterior suprahyoids: Anterior belly of Digastric, Mylohyoid, and Geniohyoid

A muscle that assists the muscles of masstication by keeping the food on the occulsal surfaces

Buccinator

Muscle of the facial expression that forms a portion of the cheek

Buccinator

What mastication muscle holds the food in place

Buccinator

Muscles of the neck that include the SCM and trapezius muscles

Cervical

A muscle that is active while one is frowning

Corrugator supercilii

Suprahyoid muscle with an anterior and posterior belly

Diagastric

Into which cervical triangles does the SCM divide the neck

Diagonal into anterior cervical triangle and posterior cervical triangle

A V-shaped mucles attached to hyoid and mandibular bones

Digastric

A muscle with 2 bellies originates fromt eh occipital bone and mastoid process and inserts on the skin tissue of the eyebrow and root of nose

Epicranial

Muscle of facial expression in the scalp region that has a frontal and occipital belly

Epicranial

What mastication muscle inserts on the neck of mandibular condyle and articular disk

External (lateral) pterygoid

What mastication muscle protrudes the mandible

External (lateral) pterygoid

The opening fromt he oral region in the oropharynx is the

Fauces (facial isthmus)

The forehead bone

Frontal

A muscle which originates from the genial tubercles and inserts int he tongue and hyoid bone

Genioglossus

Extrinsic tongue muscle that arises from the genial tubercles

Genioglossus

Anterior suprahyoid muscles that is deep to the mylohyoid

Geniohyoid

The small buldge of tissue at the most anterior portion of the hard palate is

Incisive papilla

Hyoid muscles that are inferior to the hyoid bone

Infrahyoids

What is the medial (inner) canthus

Inner angle of the eye

End of the muscle that is attached to the more moveable structure

Insertion

What mastication muscle inserts on the medial surface of body of mandible

Internal (medial) pterygoid

What mastication muscle originates on the sphenoid only

Internal(medial) pterygoid

What separates the lower lip from the chin

Labiomental groove

A muscle that originates from teh infratemporal crest and the lateral surface of the lateral pterygoid plate, and inserts on the anterior surface of the mandubular condyle and the capsule of the TMJ

Lateral (external) pterygoid

Which muscles cause protrusion of the mandible

Lateral pterygoid (both sides)

Which muscles are active when a person is smiling

Levator anguli oris, zygomaticus major and minor, and levator labii superioris

What muscles insert on the lips

Levator labii superioris, depressor labii inferioris, orbicularis oris, and zygomaticus

Most obvious and strongest muscle of mastication that enlarges through grinding and clenching

Masseter

What mastication muscle inserts on the lateral surface of ramus and angle of mandible

Masseter

What mastication muscle originates on the zygomatic arch

Masseter

Muscles that can close the lower jaw

Masseter, medial (internal) pterygoid, and temporalis

The upper jaw

Maxilla

An area closer to the midline plane of the body is considered

Medial

Which of the following structures is NOT located in the frontal region

Medial canthus

Muscles of facial expression in the mouth region that raises the chin

Mentalis

The labial or buccal mucosa meets the alveolar mucosa at

Mucobuccal fold

Type of body tissue that shortens under neutral control, causing soft tissue and bony structures to move

Muscle

A muscle which forms the floor of the mouth

Mylohyoid

Anterior suprahyoid muscle that forms the floor of the mouth

Mylohyoid

Provides support for the floor of the mouth

Mylohyoid

A muscle that originates on the superior and medial orbital rim

Orbicularis oculi

Which muscle encircles the mouth and what is its function

Orbicularis oris; pursing lips, puckering, kissing, pouting, closing lips

End of the muscle that is attached to the least moveable structure

Origin

The firm irregular ridges of tissue directly posterior and lateral to the incisive papilla are

Palatine rugae

Loss of action of the muscle

Paralysis

The structure that is found on the midline of the dorsal surface of the tongue is

Paratid papilla

On the midline of the upper lip, extending downward from the nasal septum is a vertical groove called

Philtrum

Muscle of the facial expression that runs from the neck to the mouth

Platysma

A narrow muscle that originates from fascia superficial to the masseter muscle

Risorius

Muscle of the facial region that is used when smilining widely

Risorius

Long muscle of the neck that extends from the mastoid process to the clavicle and sternum

SCM

Muscles that pull the head forward

SCM

What muscle inserts on the mastoid process

SCM

The plane that divides the body into right and left parts is

Sagittal plane

Posterior suprahyoid muscle that originates fromt eh styloid process of the temporal bone

Stylohyoid

A group of muscles which elevates the hyoid bone and larynx (occurs during swallowing)

Suprahyoid muscles: Digastric, mylohyoid, stylohyoid, and geniohyoid

Hyoid muscles located superior to the hyoid bone that can be further divided by their anterior or posterior relationship to the hyoid bone

Suprahyoids

The structure in the frontal region just under each eyebrow is

Supraorbital ridge (supercilliary ridge)

In which region of the head and nexk is the TMJ

Temporal

Cheekbone

Temporal and zygomatic

A muscle in which some of its fibers when active can cause the mandible to retract

Temporalis

A muscle which inserts on teh coronoid process of the mandible

Temporalis

Muscle of mastication that fills the temporal fossa

Temporalis

The small flap of tissue anterior to the external acoustic meatus is called

Tragus

A broad triangular muscle of the back that functions only partially as a neck muscle

Trapezius

Cervical muscles that cover the lateral and posterior surfaces of the neck

Trapezius

Midline muscular structure that hangs from the posterior margin of the soft palate

Uvula

What nerve innervates the muscles of mastication

V trigeminal and 3rd division of mandible

What nerve innervates the muscle of facial expression

VII cranial or Facial nerve

The lips are outlined from the surrounding skin by a transition zone that is called

Vermillion border

The space in the o.c which is located between the cheeks, lips and gum is called

Vestibule

What is the structure that extends from just inferior to the lateral margin of the eye towards the ear

Zygomatic arch

What mastication muscle inserts on the orbicularis oris

buccinator

What mastication muscle originates on the maxilla, mandible and pteromandibular raphae

buccinator

unpaired bones

ethmoid, frontal, mandible, occipital, sphenoid, vomer

What mastication muscle originates on the maxilla,sphenoid, and palatine bones

external(lateral) and internal (medial) pterygoids

sides of skull

frontal,parietal, occipital, temporal, zygomatic, sphenoid

What muscles insert on the eyebrows

frontalis

What muscles orginate on the frontal bone

frontalis and orbicularis oculi

What mastication muscle raises the mandible

internal (medial) pterygoid, masseter, and temporalis

A muscle which when contracted can cause the mandible to shift to the opposite side

lateral (external) pterygoid

A muscle that is active during sneering

levator labii superioris alaeque nasi

Lower jaw

mandible

A muscle that inserts in the skin tissue of the chin

mentalis

on walls of nasal fossa

nasal conchae

What muscles insert on the eyelid

orbicularis oculi

Which muscle is active when a person grimaces

platysma,orbicularis oculi,risorius

What are the broad sheetlike muscles on the sides of neck just under skin

playsma

The fold of tissue that extends from the junction of hard and soft palates down to the mandible, just behind the most distal mandibular tooth is

ptergomandibular fold

Anterior neck muscles that extends from the hyoid bone to the clavicle and manubrium

sternohyoideus

Anterior neck muscle that is attached to the thyroid carilage and part of the sternum

sternothyroideus

What mastication muscle inserts on the coronoid process of mandible

temporalis

What mastication muscle originates on the frontal, parietal, and temporal bones

temporalis

What mastication muscle retracts the mandible

temporalis

What mastication muscle lowers the mandible

temporalis and external (lateral) pterygoid

A muscle that can lift the clavicle and scapula

trapezius

What muscles orginate on the sygomatic bone

zygomaticus