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45 Cards in this Set
- Front
- Back
Where in general is the nasal cavity?
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Extending from external nares to choanae - opens into nasopharynx
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What does the oral cavity consist of?
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-Oral vestibule
-Oral cavity proper -Soft palate -Hard palate |
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What are the 3 portions of the pharynx?
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1. Nasopharynx
2. Oropharynx 3. Laryngopharynx |
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What does the larynx connect? What does it do?
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Connects oropharynx to trachea; functions in phonation.
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What is the vestibule?
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The buccal cavity
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What are the boundaries of the vestibule? What important feature lies within it?
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Lips, cheeks, teeth, gums.
-Parotid duct openings at 2nd upper molar teeth. |
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What are the boundaries of the oral cavity proper?
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Teeth, gums, palate, floor of mouth. Posterior boundary is the oropharynx.
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What is the region that is the boundary between the oral cavity proper and oropharynx called?
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Fauces - aka oropharyngeal isthmus.
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What is the frenulum?
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The line down the middle underside of tongue
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What gland can you consciously squirt saliva out of?
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Sublingual gland via the submandibular duct.
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What region is the soft palate a portion of?
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The pharynx
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What 3 areries supply blood to the soft palate?
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-Palatine branch of ascending pharyngeal artery
-Ascending palatine branch of facial artery -Greater palatine branch of maxillary artery |
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What provides sensory innervation of the soft palate?
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-Sensory branches of V2
-Sensory branches of glossopharyngeal nerve |
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What provides muscle innervation to the muscles of the soft palate?
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Vagus nerve via a pharyngeal plexus - EXCEPT TENSOR
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What is the exception to the soft palate motor innervation?
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Tensor - it is innervated by V3 the mandibular nerve.
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What folds are on either side of the palatine tonsils?
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-Palatopharyngeal (medial and posterior)
-Palatoglossal (lateral and anteror) |
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How many muscles of the soft palate are there, what are they?
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-Levator veli palatini
-Tensor veli palatini -Uvular muscle -Palatoglossal -Palatopharyngeal -Salpingopharyngeus |
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What are the 2 main parts of the tongue?
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-Body
-Root |
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What covers the surface of the tongue?
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Papillae
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What structure is between the body and root of the tongue?
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Lingual Tonsil
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What area is right in front of the lingual tonsil?
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Sulcus terminalis - a little trench where the tongue body terminates.
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What are the 4 bony attachments of the tongue?
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1. Mandible
2. Hyoid bone 3. Styloid process 4. Palate - All by extrinsic muscles |
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What gives sensory innervation to the anterior 2/3 tongue for:
-Taste -Touch |
Taste: Chorda tympani CN VII
Sense: Lingual nerve (CN V3) |
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What gives sensory innervation to the posterior 1/3 tongue for:
-Taste -Touch |
Glossopharyngeal nerve does it all!
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What gives motor innervation to the motor muscles of the tongue?
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Hypoglossal nerve (CN XII)
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What gives motor inneration to the very back of the tongue?
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Vagus nerve (X) via internal branches of the superior laryngeal nerve.
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What are the 4 extrinsic muscles of the tongue?
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1. Genioglossus
2. Hyoglossus 3. Styloglossus 4. Palatoglossus |
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What innervates all motor muscles of the tongue? What is the exception?
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Hypoglossal (XII)
-Except palatoglossus |
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What big muscle forms the floor of the mouth?
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Mylohyoid
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What is below the mylohyoid?
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Digastric - ant/post bellies
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What is above the mylohyoid?
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Geniohyoid
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What comprises the bone and cartilage framework of the nose?
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Dorsum
Bridge Alae Anterior nares |
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What bone is right behind the nasal cavity, at the level of the inferior concha?
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PTERYGOID part of the sphenoid
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What foramina are at the bottom of the pterygoid plate, where it makes a right angle w/ the maxilla soft palate?
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The greater and lesser palatine canals.
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What 2 Main Nerves innervate the nasal cavity?
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-Olfactory (CN II)
-Trigeminal (V2) |
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How does the maxillary nerve get to the nasal cavity?
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Via the pterygoid (aka sphenopalatine) canal
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What 2 arteries supply the nasal cavity?
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-Sphenopalatine branch of the Maxillary artery via pterygoid canal
-Ethmoidal branch of Opthalmic artery |
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What are the 4 paranasal sinuses?
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-Frontal
-Maxillary -Sphenoid -Ethmoid |
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What are the sinuses in general?
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mucous lined diverticula conneting the nasal cavity to the corresponding bone cavities.
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what sinuses drain into the nasal meatus?
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Paranasal sinuses
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What is the differnce btwn the fauces and choanae?
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Fauces = passage from mouth to pharynx
Choanae = passage from nose to pharynx |
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What nerves are you testing during an oral exam?
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VII - Facial
XII - Hypoglossal IX - Glossopharyngeal X - Vagus |
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How do u test the facial nerve?
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Smile
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What nerve is probly not working if the gag reflex is absent?
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9/10 - glossopharyng/vagus
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What nerve is likely a culprit when the soft palate fails to rise bilaterally during speaking, and the uvula deviates to the unaffected side?
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Vagus
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