HNN Anatomy Flashcards
The facial artery is a branch of which large artery in the neck?
The external carotid artery
What vein does the facial vein drain into?
Internal jugular
Which blood vessels supply and drain the lips? What artery and vein are these vessels branches of?
Superior and inferior labial artery and vein.
Facial artery and vein.
What blood vessels run along the side of the nose and medial corner of the eye? What vessels are these branches of?
Angular artery and vein.
Facial artery and vein.
What blood vessels branch off the maxillary artery and vein to supply the face?
Transverse facial artery and vein and superficial temporal artery and vein.
What is the nerve supply of the parotid gland?
Glossopharangeal nerve (CNIX) via the otic ganglion.
What is the nerve supply of the submandibular and sublingual glands?
Facial nerve (CNVII) via the submandibular ganglion.
What are the consequences of a severed salivary duct?
A salivary mucocele.
What is the location of the parotid duct?
Inferior and anterior to the ears, between the skin and the masseter muscle, wrapped around the mandibular ramus.
What is the location of the submandibular glands?
Floor of the mouth, lateral to the lingual frenulum.
What facial muscle does the parotid duct pierce?
The buccinator muscle.
What is the location of the sublingual glands?
Inferior to the tongue, anterior superior to the submandibular glands.
List some of the main derivatives of ectoderm.
CNS and PNS sensory epithelium of ear, nose and eye epidermis, hair, nails subcutaneous, mammary and pituitary gland enamel of teeth
Which embryonic feature has an inductive relationship with the overlying ectoderm?
The notochord
What is the initial event in the process of neurulation?
The appearance of the notochord and and mesoderm induce the overlying ectoderm to thicken and form the neural plate.
What is the special sensory function of the facial nerve?
Supplies taste from the anterior 2/3rds of the tongue.
What is the sensory function of the facial nerve?
Supplies part of the external auditory meatus and the deeper auricle.
What is the parasympathetic function of the facial nerve?
Activates lacrimal glands, submandibular and sublingual glands, glands of the mucous membranes of the nasal cavity and hard and soft palates.
What is the motor function of the facial nerve?
innervates muscles of facial expression, scalp, stapedius, posterior belly of digastric and stylohyoid muscle.
Name the 5 branches of the facial nerve from superior to inferior.
Temporal branch Zygomatic branch Buccal branch Marginal mandibular branch Cervical branch
Describe the course of the facial nerve.
- originates in the pons, exits cranial cavity through external acoustic meatus.
- passes through the facial canal of the petrous part of the temporal bone.
- Exits the skull at the stylomastoid formamen.
The geniculate ganglion is a part of which cranial nerve?
CNVII - facial nerve
The greater petrosal nerve, nerve to stapedius muscle and the chorda tympani are branches of which cranial nerve?
CNVII - facial nerve
What are the sensory functions of the vestibulocochlear nerve?
Vestibular division - balance.
Cochlear division - hearing.