100 Concepts (81 - 90)

Nosebleed

Epistaxis

Epistaxis most often occurs from _____ in the nose

Anterior nasal septum (Kieselbach's area)

What is in Kieselbach's area

Branches of sphenopalatine, anterior ethmoidal, greater palatine, and superior labial arteries converge

_____ receives opening of the sphenoidal air sinus

Sphenoethmoidal recess

______ receive opening of posterior ethmoidal air cells

Superior meatus

_____ receives openings from frontal and maxillary sinuses and anterior and middle ethmoidal air cells

Middle meatus

What makes up the middle meatus

Infundibulum

Ethmoidal bulla

Semilunar hiatus

_____ receives opening of nasolacrimal duct

Inferior meatus

Infection of _____ can erode the medial wall of the orbit resulting in orbital cellulites that can spread to the cranial cavity

Ethmoidal sinus

In orbital cavity infection may erode structures related to the medial orbital wall such as

Medial rectus muscle

Superior oblique muscle

Nasociliary nerve

What forms the cheeks

lateral, moveable walls of the oral cavity

Zygomatic prominences of hte cheeks over the zygomatic bones

Principal muscle of the cheek

Buccinator

Encapsulated collection of fat superficial to buccinator

Buccal fat pad

What structure pierces the buccinator

parotid duct

Muscles of mastication

Temporalis

Masseter

Medial pterygoid

Lateral pterygoid

What innervates the muscles of massication

CNV3

Function of temporalis

elevation and retraction of mandible

function of masseter

elevation of mandible

function of medial pterygoid

elevation of mandible

function of lateral pterygoid

protrusion of mandible

if a person damages CNV3, what happens

protrusion and deviation of mandible TOWARD the side of lesion

What is CNV3 also known as

mandibular branch of trigeminal nerve

What provides general sensory and taste innervation to anterior 2/3 of tongue

lingual n. (CNV3)

What provides taste sensation to anterior 2/3 of tongue

Chorda tympani (CN7)

What provides general and taste sensation to posterior 1/3 of tongue

Glossopharyngeal (CN9)

What provides motor innervation to the tongue

Hypoglossal (CN12)

What happens if there is a lesion on he chorda tympani

Loss of taste sensation to anterior 2/3 of tongue

what happens if there is a lesion on the lingual nerve

Loss of general and taste sensation to the anterior 2/3 of tongue

What happens if there is a lesion on the hypoglossal nerve within the hypoglossal canal

deviation and atrophy of tongue towards the paralyzed side

palatine tonsils receives main blood supply from

Tonsilar branch of facial artery

Palatine tonsil vein

External palatine vein to facial vein

Lymph drainage of the palatine tonsils mainly to

jugulodigastric lymph node

Most frequently enlarged lymph node

jugulodigastric lymph node

Palatine tonsil nerve suply

Tonsilar plexus of nerves formed by branches of CN9 and CN10

During a palatine tonsillectomy, what space facilitates tonsil removal except after capsular adhesion to the superior constrictor

peritonsillar space

what happens if there is a lesion to the glossopharyngeal nerve

loss of taste and general sensation to posterior 1/3 of tongue

During a tonsillectomy, what happens if the superior constrictor is penetrated

High facial artery or tortuous internal carotid artery may be injured

Afferent limb for gag reflex

CN9

Efferent limb for gag reflex

CN10

Injury to what nerve can cause a negative gag reflex (hyporeflex)

glossopharyngeal (CN9)

Muscles of soft palate

Tensor veli palatini

Levator veli palatini

Palatoglossus

Palatopharyngeus

Uvular muscle

Which muscles elevates the soft palate during swallowing to prevent food entering to the nasopharynx

Tensor veli palatini

Levator veli palatini

Which muscles depress soft palate and pulls walls of pharynx superiorly

Palatoglossus

Palatopharyngeus

Which muscle shortens the uvula and pulls it superiorly

Uvular muscle

What lymph nodes are involved when draining lymph from the head

Preauricular (parotid)

Submandibular

Submental

Mastoid

Occipital

Which lymph node receives lymph from anteriolateral part of scalp and lateral face

Preauricular lymph node

Which lymph node receives lymph from all air sinuses, nose and adjacent cheek, upper lip, and lateral parts of lower lip

Submandibular lymph node

Which lymph nodes are located in digastric or submandibular triangle

Submandibular lymph node

Which lymph nodes receive lymph from the chin, tip of the tongue and central part of the lower lip

Submental lymph nodes

Which lymph nodes are located in the submental triangle

Submental lymph nodes

Which lymph nodes receive lymph from posterior auricular and adjacent head region

Mastoid lymph nodes

Which llymph nodes receive lymph from the occipital region

Occipital lymph nodes

What is it called when you have a fracture of the orbital floor, typically not involving the orbital rim and is caused by blunt trauma to the orbital contents

Blow-out fracture

Contents of orbital cavity may go into what structure in a blow-out fracture

Maxillary sinus

Blow-out fractures may damage what structures

Inferior rectus muscle

Infraorbital nerve (CNV2)

Infraorbital artery

What forms when segments from he two medial nasal prominences fuse together at the midline

Intermaxillary segment

What does the intermaxillary segment form

Philtrum of lip

Four incisor teeth

Primary palate of adult

The intermaxillary segment forms _____ to the incisive foramen

anterior

the secondary palate is a derivative of

maxillary prominences

What happens if the maxillary priminences and medial nasal prominences fail to fuse

cleft of the lip or palate