H & N Anatomy

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61 terms

Process

general term for any prominence on a bony surface

Tuberosity

Large, often rough prominence on the surface of bone

Eminence

Tubercle or rounded elevation on a bony surface

Crest

Roughened border or ridge on the bone surface

Fossa

Depression on a bony surface

Foramen

Short, windowlike opening in a bone

Canal

Opening in bone that is long, narrow and tubelike

Meatus

Opening or canal in bone

Ostium

Small opening in bone

Aperture

Opening or orifice in bone

Articulation

Area where bones are joined to each other

Median Palatine Suture

What suture divides the palatine bones from right and left portions?

Transverse Palatine Suture

What suture divides the palatine bones from the maxillary bone?

Bones of the Cranium

Occipital bone
Frontal bone
Parietal bones
Temporal bones
Sphenoid bone
Ethmoid bone

Facial bones

Vomer
Lacrimal bones
Nasal bones
Inferior nasal conchae
Zygomatic bones
Maxillary bones
Mandible

The 4 paranasal Sinuses

Frontal
Maxillary
Sphenoidal
Ethmoidal

3 Functions of Sinuses

Serve to lighten the skull bone
Acts as a sound resonator
Provide mucus for the nasal cavity

4 Muscles of Mastication

Masseter
Temporalis
Lateral Pterygoid
Medial Pterygoid

masseter and lateral pterygoid

Which muscles of mastication have 2 heads

Lateral pterygoid

Which muscle of mastication is responsible for depressing the mandible?

hyoid muscles

Which muscles assist in mastication and swallowing?

What are the suprahyoid muscles?

Digastric
Geniohyoid
Mylohyoid
Stylohyoid

What are the infrahyoid muscles?

Sternohyoid
Sternothyroid
Omohyoid
Thyrohyoid

What are the 3 extrinsic tongue muscles?

Genioglossus
Hyoglossus
Styloglossus

What are the paired bones of the cranium?

Parietal
Temporal

Foramen Ovale

larger anterior opening of the spenoid bone

Suprahyoid muscles

Which muscles are responsible for elevating the hyoid bone and depressing the mandible?

Buccinator muscle

Which muscle compresses the cheeks during chewing, assisting the muscles of mastication?

Function of Genioglossus

protrudes tongue, and depresses portions

Functions of Styloglossus

retracts tongue

Functions of hyoglossus

depresses tongue

Masseter

What is the most powerful closer of the mandible?

Elevate

close

Depress

Open

Pharynx

a muscular tube that connects the respiratory tract with the digestive tract.
it also connects to the nasal and oral cavities.

The 3 pharynx are

Nasopharynx
Oropharynx
Laryngopharynx

Muscles of the soft palate

Palatoglossus muscle
Palatopharyngeus muscle
Levator Veli palatini muscle
Tensor Veli palatine muscle

What do the muscles of the pharynx do?

Assist in speaking, swallowing and functions of the middle ear.

Muscles of the Pharynx

Pharyngeal constrictor muscles- superior, middle and inferior

TMJ

What is the only freely moving bone in the skull?

What are the 2 movements of the TMJ?

Gliding- allows mandible to move forward and backward
Gliding + rotation= allows elevation and depression of mandible

Sternocleidomastoid

What muscle allows bending and rotating of the neck?

Trapezius

What muscle is used to shrug your shoulders?

Epicranial aponeurosis

What muscle raises eyebrows and scalp, surprised expression?

Orbicularis Oculi muscle

What muscle closes the eye?

Corrugator supercilli

What muscle draws eyebrows down for a frown?

Orbicularis Oris muscle

What muscle presses lips together, pursing lips, grimacing, pouting and kissing?

Risorius muscle

What muscle stretches the lips?

Levator Labii Superioris muscles

What muscle raises the upper lip?

Levateor Labii Superioris Alaeque Nasi

What muscle elevates upper lip and dilates nostrils as in a sneering expression?

Zygomaticus Major muscle

What muscle elevates angle of upper lip up and pulls it laterally as in smiling?

Zygomaticus Minor muscle

What muscle assists in smiling?

Depressor Anguli Oris muscle

What muscle is used for frowning?

Depressor Labii Inferioris muscle

What muscle depresses lower lip?

Mentalis muscle

What muscle raises chin, causing lower lip to protrude thereby narrowing oral vestibule?

Platysma

What muscle raises the skin of the neck to form noticeable vertical and horizontal ridges and depressions? Also can pull the corner of mouth down, in a grimace.

Slightly open

What is the resting position of the TMJ?

What muscles close the jaw?

masseter
temporalis
medial pterygoid

What is TMD?

Temporomandibular disorder
joint tenderness, swelling, muscle spasms, limited opening, joint noise/pain history of subluxation

What is subluxation?

It is when the head of each condyle moves too far anteriorly on the articular eminence.

How do you treat subluxation?

Relax the muscles and carefully move the mandible downward and back.

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