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Flashcards in H&N Deck (409)
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391

Describe vallate papillae

Circular and large (2mm diameter)
About 12/13 in V-shaped arrow (towards oropharynx)
Each surrounded by circular depression (valley)
Numerous taste buds
Von Ebner minor salivary glands

392

What are the 2 types of tongue muscle?

Intrinsic
Extrinsic

393

Name the 3 intrinsic tongue muscles

1. Longitudinal
2. Transverse
3. Vertical

394

Name the 4 extrinsic tongue muscles

1. Genioglossus
2. Hyoglossus
3. Styloglossus
4. Palatoglossus

395

What are the 4 movements of the tongue and what muscles are responsible for each?

1. Protrusion: genioglossus
2. Retraction: styloglossus, hyoglossus
3. Depression: hyoglossus, genioglossus
4. Retraction and elevation: styloglossus, palatoglossus

396

Describe the motor innervation of the tongue muscles

All supplied by hypoglossal EXCEPT palatoglossus supplied by pharyngeal plexus

397

Describe the taste sensory innervation of the tongue muscles

Ant. 2/3 by facial nerve via chorda tympani
Post. 1/3 glossopharyngeal

398

What nerves supply general sensation to the tongue?

Ant. 2/3 lingual from mandibular nerve (V3)
Post. 1/3 glossopharyngeal

399

Describe the lymph drainage of the tongue

Apex: submental LN
Ant 2/3: submandibular and DCLN
Post. 1/3: DCLN

400

Name 3 clinical conditions affecting the tongue

Hairy tongue: filiform grow long trapping food, OB causing malodour
Glossitis: inflammation of tongue, tongue smooth and painful
Oral cancer: can initiate from foliate papillae

401

Describe acute tonsillitis

Inflammation of the tonsils usually due to infection

Swollen tonsils
Fever
Painful, sore throat
Difficulty swallowing

402

What nerves innervate the maxillary teeth?

1-3: ant. sup. alveolar
4-5: mid. sup. alveolar
6-8: post. sup. alveolar

403

What nerve innervates the mandibular teeth?

Inf. alveolar

404

What nerves innervate the maxillary soft tissue?

Ant., mid., post. sup. alveolar

405

What nerves innervate the mandibular soft tissue?

1-5: mental nerve (branch of inf. alveolar)
6-8: buccal

406

What nerves innervate the maxillary palate?

1-3: nasopalatine (branch of V2)
4-8: greater palatine (branch V2)

407

What nerve innervates the floor of the mouth?

Lingual

408

Compare infiltration and block LA

Target nerve ends; target main nerve supply
Localised affect; all sensation downstream lost

409

What are some of the complications that may arise from LA?

Pain, swelling when injected into muscle
Trauma as can't feel burning/chewing
Facial nerve palsy
Bleeding
Acute infection