Station 2 Flashcards
1
Q
Palatoglossus
A
- Muscle of the soft palate and tongue
- Supplied by Vagus nerve
- Lesion of this nerve deviates the uvula to the opposite side of lesion
2
Q
Palatopharyngeus
A
- Muscle of the soft palate
- Supplied by pharyngeal branch of the vagus nerve via pharyngeal plexus
3
Q
Salpingopharyngeus
A
- Longitudinal muscle of the pharynx
4
Q
Palatine tonsils
A
- lodged in the tonsillar fossae of the oropharynx and are bounded by the palatoglossal and palatopharyngeal folds.
5
Q
Vallecula
A
- Epiglottic region of the tongue
- General and taste innervation by internal laryngeal branch of the vagus nerve
6
Q
Genioglossus
A
-
7
Q
Submandibular salivary gland
A
- Has a superficial and deep part
- Its duct arises from the Wharton’s duct
- Opening of its duct is at the summit of the sublingual papilla located lateral to the frenulum of the tongue
- innervated by parasympathetic secretomotor fibers from facial nerve, which reach gland through the chorda tympani and synapse in the submandibular ganglion
- Close relation of Facial artery and vein to the submandibular gland, these may be injured during surgery of gland
8
Q
Hypoglossal nerve
A
- Supplies the intrinsic and all but one extrinsic muscles of the tongue [- palatoglossus]
- Lesion of the hypoglossal nerve deviated the tongue to the same side of the lesion when protruding the tongue
- Crosses the loop of lingual artery superficially
- Runs below the submandibular gland
9
Q
Lingual nerve
A
- Carries general sensation for anterior 2⁄3 of tongue and sensory innervation of submandibular gland
- The sublingual gland is supplied by postganglionic parasympathetic fibers from the submandibular ganglion through the lingual nerve
- Know the relation of the Submandibular duct to the lingual nerve
- Pierces the Submandibular gland
10
Q
Inferior Alveolar nerve
A
-
11
Q
Anterior 2⁄3 of the dorsum of the tongue
A
- General sensation: Lingual nerve
- Taste sensation: Chorda tympani
- Sulcus terminalis divides the tongue into the anterior 2⁄3 and posterior 1⁄3
- Lingual papillae
- Circumvallate papillae found in front of the sulcus terminalis
12
Q
Superior constrictor
A
- Circular muscle of the pharynx
- Auditory tube + Levator palati muscle arise between base of skull and superior constrictor
- Stylopharyngeus + glossopharyngeal nerve arise between superior and middle constrictors
13
Q
Middle constrictor
A
- Circular muscle of the pharynx
- Stylopharyngeus + glossopharyngeal nerve arise between superior and middle constrictors
- Internal laryngeal nerve + Superior laryngeal vessels arise between middle and inferior constrictors
14
Q
Inferior Constrictor
A
- Circular muscle of the pharynx
- Has two parts:
- Thyropharyngeus [innervated by pharyngeal plexus]
- Cricopharyngeus [innervated by recurrent laryngeal nerve]
- Clinical significance of Killian’s dehiscence between them [Anatomic weakness where Zenker’s diverticulum can form posteriorly, due to incoordination of muscles]
- Internal laryngeal nerve + Superior laryngeal vessels arise between middle and inferior constrictors
- Recurrent laryngeal nerve + Inferior laryngeal vessels arises from the inferior border of inferior constrictor
15
Q
Glossopharyngeal
A
- Posterior 1/3 of tongue and circumvallate papillae receive both general and taste innervation from glossopharyngeal nerve
- Arises from the gap between the superior and middle constrictors, alongside the Stylopharyngeus
17
Q
Lateral Pterygoid muscle
A
18
Q
Medial pterygoid muscle
A
19
Q
Masseter
A
20
Q
Temporalis
A
