Anatomy 3: Salivary galnds / Tongue / Palate / Pharynx Flashcards
What cranial nerves stimulate the 3 salivary glands?
Parotid = CN IX Submandibular = CN VII Sublingual = CN VII
What kind of muscle is the tongue made of?
Skeletal
What cranial nerves supply the tongue?
Anterior 2/3rds:
General sensory= CN V3
Special sensory = CN VII
Posterior 1/3rd:
General & Sensory = CN IX
Where is the origin of the thyroid gland
Foramen caecum
Where would you find thyroglossal duct cysts or ectopic thyroid tissue?
MIDLINE migratory pathway
What are the 4 tongue muscles?
Genioglossus
Hyoglossus
Palatoglossus
Styloglossus
What CN are the 4 tongue muscles innervated by
CN XII
How do you clinically test CN XII ?
Get patient to stick their tongue out
Should remain in midline
If unilateral, tongue points to the pathological side
What artery does CN XII pass on it’s way to the tongue?
It passes lateral to the LOOP of the lingual artery
What is the blood supply to the tongue
the lingual artery
List the 5 muscles of the soft palate
Levator veli palatini Tensor veli palatini Palatoglossus Palatopharyngeus Musculus uvulae
What muscle lifts the soft palate towards the base of the skull?
Levator veli palatini
What muscle tenses the soft palate?
Tensor veli palatini
Nerve supply to the skeletal muscles of the soft palate
CNX EXCEPT tensor veli palatini (CN V3)
How to clinically test CN X and CN V3
Ask patient to say ‘Aahh’
How do you know if there is pathology among CN X or CN V3
The uvula will be pulled AWAY FROM the non-functioning side
What type of muscles make up the pharynx
Circular muscles
Longitudinal muscles
What nerve innervates the circular muscles of the pharynx
CN X
Where do all the circular muscles of the pharynx insert into
Midline raphe
List the longitudinal muscles of the pahrynx
Stylopharyngeus
Palatopharyngeus
Salpingopharyngeus
Where do the longitudinal muscles of the pharynx inset into
Posterior border of thyroid cartilage
What muscles elevate the pharynx and larynx?
The longitudinal muscles
What cranial nerves innervate the longitudinal muscles of the pharynx?
CN X - Palatopharyngeus & Salpingopharyngeus
CN IX - Stylopharyngeus
What tonsils are involved in Waldeyer’s ring of lymphoid tissue?
Pharyngeal tonsil (‘adenoid’)
Tubal tonsils
Palatine tonsils
Lingual tonsils
