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Anatomy Upper Resp I
| Question | Answer |
|---|---|
| Discuss the make-up of the external nose(5) | 1. root 2. free tip 3. ala 4. external nares (nostrils) 5. septum |
| List the functions of the nose and nasal cavity | Smell, warms and humidifies |
| identify and discuss the paranasal cavities | |
| Four parts of the nasal septum and where they are | 1. anterior- greater alar cartilage 2. posterior and lower- vomer 3. posterior and upper- perpendicular plate of the ethmoid bone 4. inferior(anterior and posterior)- anterior and posterior nasal crests of the maxilla and palatine bones, respectively |
| Bony framework of the nose includes: (3) | 1. nasal bones 2. frontal portions of the maxillary bones 3. nasal portion of the frontal bone |
| Muscles of the nose and what they do: (5) | 1. Nasalis (opens the nostrils) 2. Depressor septi (stabilizes the septum) 3. procerus 4 levator labii superioris alaque nasi (lifts lips) 5. orbicularis oris (kissing muscles) |
| What are the anterior and posterior borders of the nasal cavity? | Anterior- external nares posterior- choanae |
| Notable regions of the nasal cavity(4) | 1. vestibule (chamber of the external nose) 2. limen nasi (skin to mucus membrane connection 3. olfactory region (where the olfactory receptors are located) 4. respiratory region (nasal mucosa that warms and humidifies inhaled air) |
| Floor of the nasal cavity is formed by: | palatine processes of maxillary bone and horizontal plates of palatine bone |
| Roof of the nasal cavity is formed by: | cribriform plate of the ethmoid bone |
| Three conchae are made from: | 1. superior- ethmoid bone 2. middle- ethmoid bone 3. inferior- separate bone |
| Where are the conchae found? | lateral wall of the nasal cavity |
| What are the passageways of the nasal cavities called? | meati |
| Into which meati does the nasolacrimal gland drain into? | inferior |
| List the steps of the nasolacrimal system: | 1. lacrimal gland > lacrimal lake (with caruncle) > upper/lower lacrimal papillae with puncta > lacrimal canaliculi > lacrimal sac > nasolacrimal duct > opening of the nasolacrimal duct into the inferior meatus |
| What is the bulge lying underneath the middle conchae, caused by the middle ethmoid air cells? | ethmoid bulla |
| What is the cleft lying underneath the middle conchae? | Hiatus semilunaris |
| What sinuses drain into the hiatus semilunaris? | maxillary sinus, frontal sinus, anterior ehtmoidal air cells |
| What nerve supplies the nasal cavity with the sense of smell? | Olfactory (I) |
| What nerves supplies sensation? | Trigeminal (V) |
| What nerve supplies the septum? | nasalpalatine nerve |
| What nerves supply the conchae? | lateral posterior superior nerves and the lateral posterior inferior nerves |
| What nerves supply the medial and lateral internal nasal cavity? | anterior ethmoidal nerve |
| Primary blood flow to the nasal cavity is via: | the sphenopalatine artery |
| Which branch off that artery? | posterior septal branch |
| What branches of the sphenopalatine artery supply the nose? | anterior ethmoidal branches |
| What braches of the sphenopalatine artery supply the nares? | superior labial branches |
| What is the name of the site that is common for nosebleeds? | Kiesselbach's area |
| What is the reason for the sinuses? | give resonance to voice and lighten the skull |
| Name the sinus | Maxillary, frontal, ehtmoid or ethmoidal air cells, and shenoid |
| Where does the maxillary sinus drain? | middle meatus via the hiatus semilunaris |
| Where does the frontal sinus drain? | middle meatus via the hiatus semilunaris |
| How many cavities does the ethmoid have? | 3-18 |
| Where do the anterior ethmoid sinuses drain? | middle meatus via the hiatus semilunaris |
| Where do the middle sinuses drain? | drains into the middle meatus at an opening on the summit of the ethmoid bulla |
| Where do the posterior sinus drain? | drains into the superior meatus |
| Where does the sphenoid drain? | into the sphenoethmoidal recess |
| Three parts of cartilage forming the nose: | lateral cartilage, greater alar cartilage, lesser alar cartilage |
| Bones forming the root or bridge of the nose: | * 2 nasal bones * 2 frontal processes- maxillary bone * 2 nasal processes- frontal bone |
| Opening for the nasal cavity is formed mostly from this bone and the apex is formed by the nasal bones | maxilla |
| This valley above lips is formed by the depressor septi | philtrum |
| The area of the nasal cavity where external epithelium and mucosa meet. | Limen Nasi |
| What is the oval shaped opening that leads to the nasopharynx? | choanea |
| What forms the roof of the nasal cavity? | cribriform plate of the ethmoid bone |
| What forms the lower boundary of the nasal cavity? | hard palate( maxilla-palatine process, palatine bone- horizontal plate) |
| which meatus is the largest, path of least resistance? | inferior meatus |
| What is the inner corner of the eye called? | Lacrimal lake and the medial palpebrel commissure |
| What nerves supply the nasal cavity? | Olfactory nerve(I) and trigeminal (CN V , sensation) |
Created by:
wolfkris
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