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27 Cards in this Set

  • Front
  • Back
what are the 5 layers of the scalp
1. skin
2. connective tissue
3. aponeurosis
4. loose connective tissue
5. cranial periosteum/ pericranium
what are the two muscles of the scalp
frontalis andoocipitalis connected by the aponeurosis
what are the reasons for profuse bleeding in the scalp?
1. there are many anastomoses in the scalp
2. connective tissue has alot of blood vessels which prevents contraction
what are the three partitions of the meningeal dura?
falx cerebri
falx cerebelli
tentorium cerebelli
is the epidural space in the spine real or potential? if yes what are its contents?
fat and veins
is the subarachnoid space realy or potential?
what artery does a lateral fx on the pterion bone affect?
what kind of hematoma does it lead to?
middle meningeal artery
epidural hematoma
what parts of the brain will an epidural hematoma compress due to a fx of the pterion bone?
cerebral hemispheres, medial part of the temporal lobe and brainstem (due to herniation)
what are the symptoms associated with a pterion fx?
after a lucid asymptomatic interval there is
1. weakness of limbs
2. dilated pupil due to the compression of CNIII
3. deterioration of the cardiovascular and respiatory functions.
what are the foramina called on the fourth ventricle that releases CSF to the subarachnoid space?
luschka and magendie
what is the function of the arachnoid granulations?
takes the CSF from the subarachnoid space to the venous sinuses (superior sagittal sinus)
where is the CSF produced?
in the choroid plexus of the lateral, third and fourth ventricles
what sinuses drain to the confluence?
superior sagittal, straight and occipital sinuses
where does the blood from the confluence drain to?
transverse sinus (which then carries blood to the sigmoid sinus)
which sinuses drain to the internal jugular v?
inferior petrosal and the sigmoid sinus
where does the cavernous sinus drains to?
superior and inferior petrosal sinuses
where does the vertebral aa originate?
subclavian artery
what is the pathway of the vertebral aa to the skull?
from the subclavian aa it comes up the foramina transversarium of C1-C6, comes through the foramen magnum with the spinal cord
what is the pathway of the internal carotid artery to the the skull?
comes from the common carotid through the carotid canal which turns to the foramen lacerum
what are the branches of the internal carotid aa?
the anterior cerebral and the posterior communicating and the ophthalmic aa
what are the branches of the vertebral aretery?
the posterior inferior cerebellar aa and the anterior and posterior (2) spinal aa.
what two structures goes through the optic canal?
the optic nerve (CNII) and the ophthalmic aa
what 5 structures goes through the superior orbital fissure?
the Oculomotor N (CN III), Trochlear (IV), Abducens (VI), Ophthalmic of Trigeminal Nerve (V) and Superior Ophthalmic vein
what two nerves goes through the internal acoustic meatus?
facial (VII) and the vestibulocochlear n(VIII)
what 4 structures goes through the jugular foramen?
internal jugular v, glossopharyngeal (IX), Vagus (X) and accessory (XI)
What nerve goes through the hypoglossal canal?
hypoglossal n (XII)
what nerve goes through the foramen magnum?
accessory nerve (XI) spinal root