General Anatomy Flashcards
Name the only two cranial nerves that originate from the cerebrum.
CN 1 - Olfactory
CN 2 - Optic
Which Cranial nerves also provide taste sensation in addition to their main/primary function.
7,9,10
Where does the Oculomotor cranial nerve originate from?
Midbrain-pontine junction
Where does the Trochlear originate from?
The posterior side of the midbrain
Where does the trigeminal nerve originate from?
Pons
Where do cranial nerves 6,7,8 originate from?
Pontine-medulla junction
Where precisely do cranial nerves 9-12 originate from in the brain stem.
9-11 - Posterior to the olive in the medulla oblongata
12 - Anterior to the olive in the medulla oblongata
Which cranial nerves carry sympathetic nerve fibres in addition to their primary functions.
3,7,9
A) What is the name of the suture that lies between the Parietal, frontal, squamous temporal and greater wing of the sphenoid “weak”?
B) What is the clinical significance of this suture?
A) Pterion
B) The weak point with the middle meningeal artery deep to it which can get injured
From a superior view of the skull, state the internal foramina/canals anteriorly to posteriorly with each nerve that goes through.
- Cribriform plate: CN 1
- Optic Foreman: CN 2
- Superior orbital fissure: 3,4,6 + 5 V1
- Foreman rotundum: Maxillary nerve
- Foreman ovale: Mandibular
- Foreman spinosum:
- Foreman lacerum: nothing
- Internal acoustic meatus: 7,8
- Jugular foreman: Internal jugular vein + CNs 9,10,11
- Hypoglossal canal: CN 12
Name the three bones that form the orbital margin.
Frontal, Maxilla, and zygoma
What is the anatomical/functional significance of the pterygopalatine fossa?
- The maxillary division of the trigeminal nerve
- Pterygopalatine ganglion
What is the name of the joint in the jaw and what type of joint is it?
Temporomandibular joint
Synovial joint
What is the clinical significance of the superior and inferior ophthalmic veins?
Pass posteriorly through the orbit and its fissures to empty into intracranial venous sinuses. This is a potential route for the dangerous spread of infection from superficial, facial structures to the cranial cavity
What is the clinical significance of the anterior fontanelle?
Location for Intracranial Pressure Examination in the newborn
