5 Written questions
5 Matching questions
- Explain the pathway of the facial nerve (CNVII)
- What muscles responsible for extortion and intorsion of the eye?
- What are the branches of the facial nerve?
- Explain where the trigeminal nerve exits externally.
- Explain the peripheral pathway of the CNVII- oculomotor nerve.
- a Enters the internal acoustic meatus to hit the geniculate ganglion. Main branch goes out the stylomastoid foramen to supply face muscles, while it sends a chorda tympani branch to join lingual to go to submandibular/mental glands and carry taste. A smaller branch leaves geniculate ganglion called the greater petrosal nerve to hit the pterygopalatine ganglion and supply other glands.
- b 1. Supraorbital notch
2. Infraorbital foramen
3. Mental foramen
- c Extorsion: Inferior oblique and rectus
Intorsion: Superior oblique and rectus
- d Has voluntary movement and parasymphthetic constriction of the eye. As such- synapse in the ciliary ganglion behind the eye and the to the brain. REMEMBER THIS SYNAPSE before going to the brain.
- e 1. Cervical
5 Multiple choice questions
- glossopharngeal (CNIX) sends preganglionic parasymphatetics to the parotid gland.
- CN 7 and CN 8 (Facial and vestibulacoclear) leave the skull.
- 1. Cochlear (for hearing) in the spiral part of the middle ear goes to the spiral ganglion (cell bodies)
2. Vestibular (balance) in the vestibular appartus goes to the vestibular ganglion (cell bodies)
Axons from both of these converge to leave middle ear to the brain.
- Where the jugular vein leaves as well as CN 9, 10, 11. (Vagus, glosspharngeal, accessory).
- Optic Nerve: eye to chiasm
Optic Tract: chiasm to brain
Nasal portion nerves cross in chiasm while the lateral portions do not. Thus left field processed by right side of the brain and vice-versa.
5 True/False questions
Explain the function of the pterygopalatine ganglion. → Behind maxiallary sinus. Postganglionic sympathics from greater petrosal nerve (facial) for parasympth. of nasal/lacramal/palatine glands. also branches of the trigeminal
Explain the function of the submandibular ganglion. → Chorda typani (facial) post ganglionic parasympathtics to the submandibular gland and the submental gland.
What muscles responsible for looking up and down? → Up- Superior oblique and inferior rectus
Down- Inferior oblique and superior rectus
What are the structures of the:
1. anterior base of the skull
2. medial base of the skull
3. posterior base of the skull → Sensory/motor
Opthalmic- sensation to forehead and cornea
Maxillary- sensation to maxillary and upper teeth
Mandibular- sensation to madible and works chewing muscles
Where is the hypogloassal canal? → Where the jugular vein leaves as well as CN 9, 10, 11. (Vagus, glosspharngeal, accessory).