Face, Temporal and and infratemporal fossa Flashcards
Learn about the face, temporal and infraorbital foramen.
Describe the face.
The face is the anterior part of the head and provides identity as a human being.
What are some important roles of the face?
Communication with others and our interaction with the environment.
What forms the shape of the face?
The underlying bones.
Name some bones of the face and what features they underlie
Frontal bone - forehead Zygomatic bone - cheekbones Maxillary bone - cheek Mandible - jaw Mandibular process - chin
What do the muscles of facial expression do?
They close the eye and mouth and convey mood.
Which muscle elevates the eyebrows?
Occipitofrontalis
What does orbicularis oculi do?
Closes eyelids
Which muscle closes the mouth?
Orbicularis oris
Which muscle elevates labial commissure?
Zygomaticus major
What does the Platysma do?
It depresses the mandible against resistance, and tenses the fascia of the neck
What does the buccinator do?
Compresses the cheek
What is the supply of cutaneous innervation?
The trigeminal nerve (CN V)
What does the facial nerve (CN VII) supply?
All muscles of facial expression
What are the three branches of the trigeminal nerves?
Opthalmic nerve (V1) Maxillary nerve (V2) Mandibular nerve (V3)
What is the name of cranial nerve 7 and what type of innervation does it supply?
Facial nerve. Sensory, tase, general, motor and visceral motor
Where does cranial nerve 7 exit?
Internal acoustic meatus
Facial canal
Stylomastoid foramen
What are the motor branches of cranial nerve 7? (Hint: there are six)
Posterior auricular Temporal Zygomatic Buccal Marginal mandibular Cervical
Where does the parasympathetic part of CN VII branch to?
It branches to the pterygopalatine ganglion
What does the pterygopalatine ganglion do?
The pterygopalatine ganglion goes to the nasal passage and helps to regulate bloodflow to the nasal conchae
How does cranial nerve 7 supply taste information?
via the chorda tymphani via the lingual nerve
Which part of the tongue does the lingual nerve supply sensory innervation to?
The anterior two thirds of the tongue
Where does cranial nerve 7 supply general sensory innervation over?
The skin over the external auditory meatus