5 Written questions
5 Matching questions
- What muscles responsible for adduction and abduction of the eye?
- What are the components of the gag reflex?
- What is the role of the otic ganglion?
- What are the different duramatter in the brain?
- What specific muscles of the eye are controlled by the abducent nerve (CNVI) and the trochlear nerve (CNIV)
- a Adduction: Medial, Superior, Inferior rectus
Abduction: Lateral, superior, inferior obliques
- b Abducent- Lateral rectus
Trochlear- Superior oblique
- c Sensory- glossopharngeal
- d Falx Cerebri: divides the cerebral lobes
Tentorium Cerebelli: Divides the cerebrum from the pons- except for the tentorial notch w/ allows communication
- e glossopharngeal (CNIX) sends preganglionic parasymphatetics to the parotid gland.
5 Multiple choice questions
- Has a cranial and spinal root. Spinal root comes to join the cranial root in the skull and then they leave the skull. Cranial root becomes apart of the vagus nerve and the spinal root innervates the traps and sternocleidomastoid. PAIN GOES TO CERVICAL NOT CRANIAL ROOTS.
- CN 7 and CN 8 (Facial and vestibulacoclear) leave the skull.
- Against Medial wall sits the carotid siphon and the sphenoid fossa.
CN III, IV, VI corse through to exit out the superior orbital fissure (between the wings of the sphenoid).
Trigeminal splits to exit (opthalmic out the superior orbital fissure, maxillary out the foramen rotunda, and mandibular out the foramen ovale).
- 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.
- Splits into:
1. opthalmic (eye supply)
2. Middle cerebral (lateral side of brain)
3. Anterior cerebral (anterior medial portion of the brain)
Anastomoses with the vertebral artery.
5 True/False questions
Explain the function of the hypoglossal nerve (CNXII) → Supplies muscle of the tongue. Especially the genioglossus muscle going from the tip of the mandible to the posterior portion of the tongue.
What are the parasympathetic ganglions in the face? → glossopharngeal (CNIX) sends preganglionic parasymphatetics to the parotid gland.
What is the difference between the optic nerve and the optic track? How does crossing work in the nerves of the optic nerve. → 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.
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
What divides the anterior, medial, and posterior cranial fossa? → Sphenoid ridge- Anterior from medial
Petrous ridge- medial from posterior