Lab 1 Flashcards
Which muscles of facial expression and their intervening aponeurosis contribute to the formation of the scalp?
• ____
• ____
frontalis
occipitalis
Which branches of the external and internal carotid arteries anastomose freely in the scalp?
- ____ a.
- Supraorbital a.
- ____ a.
- Posterior Auricular a.
- ____ a.
• Anastamose in ____ layer
supratrochlear
superficail temporal
occipital
dense CT
In which plane do these blood vessels lie and why do scalp lacerations bleed so profusely?
- ____
- Scalp lacerations bleed profusely bc vessels are firmly attached to ____
dense CT
dense CT
What role is played by the arachnoid villi in the circulation of CSF?
• Resorb and filter ____ which bathes the CNS - within the ____
CSF
superior sagittal sinus
Tentorium Cerebelli
Separates the ____ as it rests in posterior cranial fossa from the overlying occipital bones
cerebellum
Tentorial Notch
____ passes through this during life
PATHOLOGY:
Hernia of ____ due to lesions may can important neurological symptoms
brainstem
forebrain
Cavernous Sinus Thrombosis will lead
to what clinically significant
consequences?
Cause: ____ spread of ____ from
several superficial regions of the head
hematogenous
infection
How could an aneurysm near the lateral aspect of ICA I cause medial strabismus?
- This area is in close proximity to the ____ n. which would lead to damage of ____
- ____ gaze paralysis aka ____
abducens
abducens nucleus
lateral
cross-eyed
Clivus
Slope b/w ____ and foramen magnum where
- ____
- ____
Rest during life
dorsum sella
pons
basilar artery
Internal Auditory Meatus
Region where CN ____ and CN ____ pass thru - facial more superior and courses thru facial canal
VII
VIII
Jugular foramen Foramen through which - CN \_\_\_\_ - CN \_\_\_\_ - CN \_\_\_\_ Pierce thru at conflence of inferior ends of inferior petrisal and simoid sinuses
IX
X
XI
Foramen spinosum
____ from branch of maxillary artery enter cranial cavity through this.
middle meningeal arteries
What are the functions and clinical significance of the anastomoses that occur between venous dural sinuses and the internal vertebral venous plexus? (around foramen magnum)
• Possibly having to do with spread of____? ____ plexus is important route for spread of infection/cancer and can also lead to emboli in ____ – these communicate freely with sinuses draining the brain and endocranium
infection
vertebral venous
endocranium
