Pimp Questions Flashcards
What are the layers of the eyelid?
Skin Orbicularis Septum (Preaponeurotic fat) Levator aponeurosis Tarsus / Muller's muscle Conjunctiva
What is the anatomy of the submandibular gland?
In the submandibular triangle
Between the mylohyoid and the digastrics
Enveloped by superficial layer of deep cervical fascia
Right near the marginal mandibular nerve
The Lingual nerve runs laterally to it under the mylohoid
Facial artery runs through it
What is the function of the submandibular gland?
Serous AND mucinous saliva
Where does the submandibular gland empty?
Wharton’s duct – lateral to lingual frenulum in anterior floor of mouth behind incisors
Innervation to the submandibular gland?
Parasymp: chorda tympani (via lingual nerve)
Symp: superior thoracic nerves
Contents of saliva
Water 99%, Ca++ salts, organic compounds and enzymes (amylase, lysozyme, IgA)
Words for excess saliva
Sialorrhea or Ptyalism
Word for deficient saliva
Xerostomia
Causes of xerostomia
Sjogren's Stress/anxiety Mouth-breathing Dehydrations Meds Radiation
Blood supply to the SMG
Facial artery
Functions of the marginal mandibular nerve
Innervate depressor mm for lower lip and chin
Boundaries of the submandibular triangle
Mandible/mastoid (ant)
Anterior belly of digastric (medial)
Posterior belly of digastric (lateral)
Stylohyoid (posterior)
Indications for SMG excision
Chronic sialadenitis
Sialolithiasis
Suspected neoplasm?
Sialarrhea
How to avoid damaging the marginal mandibular nerve?
Do a subcapsular excision, NOT a subplatysmal flap. That way you will lift the nerve up with the deep cervical fascia over the gland