Face - Muscles And Nerves (1.5) Flashcards
What is the name of the muscle extending down the forehead? Name its two parts.
Occipitofrontalis: front belly and occipital belly (connected across the top of the head by the epicranial aponeurosis)
What is the name of the muscle that keeps the lips forcefully closed?
Orbicularis oris.
Sensory nerves of the face and scalp:
Anterior to the ear, the face is supplied by the _______ nerve.
Posterior to the ear, the scalp is supplied by the ________.
Anterior: Trigeminal nerve (CN5)
Posterior: Spinal nerves (C2-C3)
Name the 3 divisions of the Trigeminal nerve.
1 - ophthalmic
2 - maxillary
3 - mandibular
Name the 5 terminal cutaneous branches of the ophthalmic division of CN5.
- Supra-orbital
- Supratrochlear
- Lacrimal
- Infratrochlear
- External nasal
Where does the frontal nerve come from? Name its two terminal branches.
Comes from the ophthalmic division of CN5. Terminates in the Supra-orbital nerve and the Supratrochlear nerve.
What happens to the facial nerve as it passes through the parotid gland?
It divides into five branches, which are together called the parotid plexus.
Name the five terminal branches of the parotid plexus (facial nerve).
From superior to inferior:
- Temporal
- Zygomatic
- Buccal
- Marginal mandibular
- Cervical
What is the muscle that allows you to close your eye? What are its parts?
Orbicularis oculi. The palpebral part closes the eye gently. The orbital part closes it tightly.
Name the 3 terminal cutaneous branches of the mandibular division of CN V.
- Auriculotemporal
- Buccal
- Mental
Name the 3 terminal cutaneous branches of the maxillary division of CN V.
- Zygamaticotemporal
- Zygamaticofacial
- Infraorbital
Which nerve conveys taste sensation from the anterior 2/3 of the tongue?
Facial nerve (via the sensory fibres of the chorda tympani, with cell bodies in the geniculate ganglion)
Which nerve conveys taste sensation from the posterior 1/3 of the tongue?
Glossopharyngeal.
