Compiled Lab Info Flashcards by Anna Farrell

The anterior cranial fossa is filled by the

frontal lobes of the cerebral hemispheres

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The lateral depressions of the middle cranial fossa are filled by the

temporal lobes of the cerebral hemispheres

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The midline depression in the middle cranial fossa is filled by the

pituitary gland

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The posterior cranial fossa is filled by what 2 things

brainstem (midline) &
cerebellum (lateral depressions)

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What goes through the foramen magnum of the occipital bone

brainstem as it transitions to the spinal cord

vertebral arteries

CN XI

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the _______ part of the occipital bone supports the pons and medulla regions of the brainstem

basilar

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the ________ artery travels along its internal surface

basilar

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the occipital condyles articulate with the

C1 vertebra

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External landmark that closely approximates the location of the confluence of the sinuses

External occipital protuberance

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Confluence of sinuses
overlies this landmark

Internal occipital protuberance

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Attachment site for the cerebral falx

Internal occipital protuberance

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Attachment site for the cerebellar falx

Internal occipital crest

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Transmits CN VII and CN
VIII

internal acoustic meatus

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What goes through the carotid canal

ICA and postGS fibers traveling on it

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Impression along the occipital & temporal bones as the transverse sinus runs in the attached edge of the cerebellar tentorium

Groove for the transverse sinus

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Impression along the temporal & occipital bones as the sigmoid sinus runs toward the jugular foramen

Groove for the sigmoid sinus

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Lies in between the petrous ridge of the temporal bone and the occipital bone

Jugular foramen

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Internal jugular vein begins here & receives direct drainage from the sigmoid & inferior petrosal sinuses

jugular foramen

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The __________ is filled by the pituitary gland and covered by the sellar diaphragm

hypohyseal fossa

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Attachment of the cerebellar tentorium

posterior clinoid processes

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Transmits the middle meningeal artery

foramen spinosum

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Attachment of the cerebellar tentorium

Anterior clinoid process

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the superior orbital fissure transmits what 5 things

CN III
CN IV
CN V1
CN VI
ophthalmic veins

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Transmits CN II and the ophthalmic artery

optic canal

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By birth, this opening is covered by cartilage and is not continuous into the middle cranial fossa

foramen lacerum

Attachment of the cerebral falx

frontal crest

The olfactory bulb is composed of the _______ for smell

2nd-order neurons

The optic nerves are composed of the axons of the _______ cells

retinal ganglion cells

CN III travels along the ________ of the cavernous sinus

lateral wall

CN III is composed of __________ fibers to almost all of the extra-ocular muscles and ________ fibers to the constrictor pupillae & ciliary muscles

somatic motor ; preganglionic parasympathetic

CN IV travels along the ________ of the cavernous sinus

lateral wall

CN IV is composed of _________ fibers to the _________ muscle

somatic motor ; superior oblique

Trigeminal ganglion is composed of _________ located on the floor of the middle cranial fossa

1st order somatic sensory CBs

CN V1 passes anteriorly through the ______ of the cavernous sinus

lateral wall

CN V1 is composed of ________ of 1st order cell bodies located in the trigeminal ganglion

peripheral (distal) processes

CN V1 carry sensations from the

cornea skin of forehead anterior scalp eyelids frontal sinus sphenoid sinus mucosa of anteriorsuperior aspect of the nasal cavity

CN V2 is composed of ________ of 1st order cell bodies located in the trigeminal ganglion

peripheral (distal) processes

CN V2 carry sensations from the

skin of the face over the maxilla upper lip maxillary teeth & gingiva mucosa of nasal cavity nasopharynx maxillary sinuses palate

V3 does _____ pass through the cavernous sinus

not

CN V3 is composed of _______ fibers to what muscles

Somatic motor ; muscles of mastication and pharyngeal arch 1 muscles

CN V3 has peripheral (distal) processes of _______ cell bodies located in the _______

1st order ; trigeminal ganglion

V3 fibers carry sensation from

skin of face over the mandible (except the angle) lower lip mandibular teeth & gingiva TMJ mucosa of oral cavity anterior 2/3rds of the tongue

CN VI is composed of _________ fibers to the _________ muscle

somatic motor ; lateral rectus

CN VII is composed of _________ fibers that supply the muscles of ________ and pharyngeal arch __

somatic motor ; facial expression ; 3

CN VII are composed of ________ fibers to most of the major glands of the head

Preganglionic parasympathetic

CN IX has special sensory fibers for taste from the

posterior tongue

CN IX has ______ fibers to the parotid gland

Preganglionic parasympathetic

CN XI is composed of ___________ fibers to the _______ and ______ muscles

somatic motor ; SCM ; trapezius

Attachment site of temporalis muscle

Coronoid process

Nerve and artery to masseter emerge here to reach the masseter muscle

Mandibular notch

Site of attachment of the medial and lateral pterygoid muscles

lateral pterygoid plate

the pterygoid fossa is filled by the muscle belly of the _______ muscle

medial pterygoid

the spine of the sphenoid is the attachment site for the

sphenomandibular ligament

the pterygomaxillary fissure transmits the _____ artery and ____ nerves

maxillary artery PSA nerves

the chorda tympani nerve from CN VII courses through the

petrotympanic fissure

what is the attachment site for the temporalis muscle

coronoid process

the nerve and artery to masseter emerge where to reach the masseter muscle

mandibular notch

what is one of the attachment sites for the lateral pterygoid muscle

pterygoid fovea

what is the attachment site for the masseter and medial pterygoid muscle

angle of mandible

what transmits the inferior alveolar nerve and artery

mandibular foramen

CN VI passes anterior within the _____ of the cavernous sinus along the lateral aspect of the ____________ and then enters the superior orbital fissure

middle ; internal carotid artery

the superior division of CN III pierces the deep aspect of the _________ and then passes to the ___________

superior rectus ; levator palpebrae superioris