Nerves
These run through the superior orbital fissure
CN 3, 4, V1, 6
What major artery is responsible for blood flow to the superficial aspect of the face?
ECA
What veins form the brachiocephalic v?
IJV and subclavian
This muscle causes protrusion and elevation of the lower lip.
Mentalis
This bone has a greater wing and a lesser wing, with each wing sitting in a different part of the cranial fossa.
Sphenoid
(greater in middle cranial, lesser in anterior cranial fossa)
This nerve tenses the tympanic membrane, and why would we want that tensed?
V3, to dampen noise from chewing
What cranial hole does the ECA travel through?
None, it stays outside!
What does the common facial v drain into?
internal jugular v
Name the muscles of the infrahyoid muscles
omohyoid: inferior belly
omohyoid: superior belly
sternohyoid
sternothyroid
thryohyoid
This muscle acts to stabilize the stapes, used for protection against loud sounds.
Stapedius m
Name the function of V3.
sensory: lower teeth/face/ear
motor: mm of mastication, tensor tympani, tensor vali palatini, anterior digastric, mylohyoid
Name the branches of the ECA
superior thyroid, (ascending pharyngeal), lingual, facial, occipital, posterior auricular, maxillary, superficial temporal.
What is the difference between the drainage pathway when comparing superior and inferior sagittal sinuses?
Inferior has to go to straight sinus before confluence.
This muscle forms the floor of the mouth.
Mylohyoid
Dilator pupillae m is under what control?
sympathetic
Name the cutaneous branches of the cervical plexus.
OATS
lesser occipital
great auricular
transverse cervical
supraclavicular
Write out the course/branches of the ICA.
ICA > carotid canal > gives off opthalmic branch > terminates in MCA and ACA
What two veins come together to form the external jugular v?
posterior auricular and posterior division of retromandibular
Name the suprahyoid muscles.
"Give my daughter Daphne sugar"
Geniohyoid
mylohyoid
digastric: anterior
digastric: posterior
stylohyoid
Describe the falx cerebri and what it attaches to.
Dural fold in between the two cerebral hemispheres, attaches to crista gali and fusion site with tentorium cerebelli.
What forms the ansa cervicalis?
Inferior root (c2/c3)
superior root (c1/c2)
Draw and label the circle of willis
Willis.
From the superior sagittal sinus, name the drainage to the internal jugular vein.
SS > confluence of sinuses > transverse > sigmoid > IJV
Which mm of mastication do retraction of the mandible?
Deep masseter
temporalis
What are the 3 meningeal spaces, which are potential versus true?
epidural space: potential
subdural space: potential
subarachnoid space: real-with CSF