Lecture 28 Flashcards Preview

OT 716 - Unit III > Lecture 28 > Flashcards

Flashcards in Lecture 28 Deck (30)
Loading flashcards...
1
Q

Nose - External Features

A
  • free tip
  • root
  • external nares (nostrils)
  • ala
2
Q

The external nares are separated by

A

septum

  • anterior, cartilaginous part
  • posterior, bony part
3
Q

What does the posterior, bony part of the septum consist of?

A
  • vomer
  • perpendicular plate of ethmoid bone
  • perpendicular plate of palatine bone
  • anterior nasal spine of maxillary bone
4
Q

Bony framework of nose includes

A
  • nasal bones
  • frontal portions of maxially bones
  • nasal portion of the frontal bone
5
Q

In the cranium, the opening to the nose is…

A

the piriform fossa

6
Q

Muscles of the nose include…

A
  • nasalis (opens nostrils)
  • depressor septi (stabilizes septum)
  • levator palpebrae superioris alaque (scrunches nose)
7
Q

Areas near nasal septum

A
  • vestibule (airway of external nose)

- limen nasi (skin-to-mucus-membrane connection)

8
Q

Floor of nasal cavity

A
  • palatine processes of maxillary bone

- horizontal plates of palatine bone

9
Q

Roof of nasal cavity

A

formed by cribiform plate

10
Q

Nasal conchae/turbinate bones

A
  • found on lateral walls of nasal cavity
  • covered by mucous membrane (warms and humidifies air)
  • superior and middle conchae (inferior is its own bone) are part of ethmoid bone
11
Q

Meati (“passageways”)

A
  • superior, middle, & inferior

- where nasolacrimal duct drains

12
Q

Spheno-ethmoidal recess

A

where sphenoid sinus drains

13
Q

Ethmoid bulla

A
  • bulge lying underneath middle conchae

- caused by middle ethmoid air cells

14
Q

Haitus semilunaris

A

cleft underneath middle conchae where maxillary sinus, frontal sinus, and anterior ethmoidal air cells drain

15
Q

Opening for nasolacrimal duct

A

Lacrimal apparatus

16
Q

Parts of lacrimal apparatus (7)

A
  • lacrimal gland
  • lacrimal lake
  • lacrimal caruncle
  • lacrimal papillae
  • lacrimal canaliculi
  • lacrimal sac
  • nasolacrimal duct
17
Q

Lacrimal gland

A

releases tears that migrate medially across conjunctiva

18
Q

Lacrimal lake

A

collects tears

19
Q

Lacrimal caruncle

A

red tissue lake

20
Q

Lacrimal papillae

A

small bump on medial eyelid

21
Q

Lacrimal canaliculi

A

ducts from puncta lacrimalia to lacrimal sac

22
Q

Lacrimal sac

A
  • upper dilated end of nasolacrimal duct

- connects lacrimal canaliculi to nasolacrimal duct

23
Q

Nasolacrimal duct

A
  • drains into nasal cavity

- runny nose!

24
Q

Nasal cavity SENSE OF SMEEL is supplied by…

A

olfactory nerves

25
Q

Nasal cavity SENSATION is supplied by…

A

branches of trigeminal nerve

26
Q

What other innervation is also present in nasal cavity for control of secretions and blood flow?

A

Sympathetic/parasympathetic (by CN VII) innervation

27
Q

Primary blood floor to nasal cavity is via the (direction) entering _______________ artery

A
  • posteriorly

- sphenopalatine

28
Q

Sphenopalatine artery branches

A
  • anterior ethmoidal artery
  • posterior ethmoidal artery
  • greater palatine artery
  • nasal branch of facial artery
29
Q

What significance do the paranasal sinuses have?

A
  • give resonance to the voice

- lighten the skull

30
Q

Paranasal sinuses (4)

A
  • maxillary sinuses (surround the nasal cavity)
  • frontal sinuses (above the eyes)
  • ethmoidal sinuses (between the eyes)
  • sphenoidal sinuses (behind the ethmoids)