Test Four Flashcards
Which nerves and other structures pass through the Superior orbital fissure
Ophthalmic Vein CIII oculomotor nerve CIV trochlear Nerve CVI trigeminal nerve CVII Abducent
Where does the facial nerve CR VII exit from the cranium
Styloid mastoid foramen
Describe left side bending pattern of the maxillae
Left side bending of maxillae
Left side is more superior to the right
Upper teeth would be assymetric
Nostrils and orbit and eyeball on left side would be superior to the right
How does the optic nerve relate anatomically to the pituitary gland and why might this be clinically significant
The optic nerve travels posteriorly through the optic canal to the optic chiasma
The optic chiasma is located anteriorly to the sella turcia in the sphenoid body which houses the pituitary gland
Optic nerve compression caused by restriction in sella turcia
Describe the origin, pathway and function of CR XI the accessory Nerve
Arises outside the cranium at C1-4 through dura, travels through foramen Magnum to jugular foramen to briefly bind with cranium division
Passes through to target trapezium and stereo-cleido mastoid muscles of neck and shoulder
Which pathways regulate the pupil construction
Parasympathetic branch of oculomotor CN III emerging from mid brain, passes through the ciliary Ganglion, along optic tract with CN IV, VI and CN V ophthalmic branch through the superior orbital fissure to the ciliary muscle, muscle that contracts the pupil
Which pathways regulate pupil dilation
Sympathetic CN III
Nerve fibres emerge in the Superior Cervical ganglia T1/T2
Passes through carotid plexus on the carotid artery to the muscle of the pupil
Describe the pathway of the mandibular branch of the Trigeminal Nerve CN V from its root to its final destination
Trigeminal Nerve V3
Motor Division Pons goes underside of Trigeminal ganglion through foramen ovale through mental foramen to target muscles of mastication
Sensory division Pons through Trigeminal ganglion through foramen ovale anterior through mental foramen to sensations of teeth, jaw and lower face
Meningeal branch passes back up through foramen spinosum to meninges
What are symptoms of Bells Palsy?
Eye dripping on one side Dribbling Loss of control of face CN VII Fascial Nerve muscles and glands of face
What are the effects of Ménière’s disease and what CN is affected.
CN VIII Vestibule-cochlear Nerve and CN VII Fascial Nerve that controls muscle to the stapes Motion sickness Vertigo Loss of hearing
Describe the motion of the following bones during flexion phase:
Maxillae
Zygoma
Maxillae
Front portion rises superiorly coming up to meet the frontal bone while at same time spread laterally at posterior part of inter maxillary suture
Back teeth move apart
Zygoma
Externally rotate with temporals and arching down and our
With which bones does the Vomer articulate?
Palantine Bones
Ethmoid
Sphenoid
Maxillae
Describe the CS motion of the orbit during flexion phase
Orbit flattens on vertical plane and gets larger on horizontal plan as they get squeezed between frontal and maxillae
List two cranial contacts and one Fascial contact which might be beneficial and significant to assist drainage of the middle ear and treatment of ear infections
Explain why
Ear hold Mastoid process Temporal hold TMJ/Palantine hold All holds engage with CN VIII vestibular cochlear nerve-and internal auditory foramen Eustachian tube nasal muscosa glands and lacrimal glands for enabling better drainage of middle ear and release blockages
What aspect of a person do you associate with the ethmoid
Enlightenment 3rd eye Spiritual aspect Foresight Vision Intuition
