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brain and behavior week 3 > week 3- cranial base > Flashcards

week 3- cranial base Flashcards

1
Q

Foramen Cecum

Bone

specific area

nerves & vessels

A

Bone: ethmoid bone

specific area: anterior to the cribiform plate

nerves & vessels : emissary venous connections

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2
Q

Foramina of CribiformPlate

Bone

specific area

nerves & vessels

A

Bone: ethmoid bone

specific area:. A horizontal plate of bone forms the superior horizontal border of the ethmoid bone

nerves & vessels: olfactory nerves

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3
Q

Anterior Ethmoidal foramina

Bone

specific area

nerves & vessels

A

Bone: ethmoid

specific area:​ along the ethmoidal border of the medial orbital wal

nerves & vessels:​the anterior ethmoidal vessels and nerve

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4
Q

Posterior Ethmoidal Foramina

Bone

specific area

nerves & vessels

A

Bone: Ethmoid

specific area: sits in the suture between the ethmoid bone and frontal bone

nerves & vessels:posterior ethmoidal nerve

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5
Q

Optic canal

Bone

specific area

nerves & vessels

A

Bone: sphenoid

specific area: at the base of the lesser wings

nerves & vessels: The optic nerve and artery

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6
Q

superior orbital fissure

Bone

specific area

nerves & vessels

A

Bone: sphenoid bone

specific area: elongated gap between the lesser and greater wings of the sphenoid bone. This fissure opens into the posterosuperior orbit

nerves & vessels: CN II, IV, V1, VI

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7
Q

Foramen Rotundum

Bone

specific area

nerves & vessels

A

Bone: sphenoid

specific area: floor of the middle cranial fossa at the junction of the body and greater wing of the sphenoid

nerves & vessels: maxillary division of the trigeminal nerve (V2)

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8
Q

Foramen Ovale

Bone

specific area

nerves & vessels

A

Bone: sphenoid

specific area: posterior part of the greater wing of the sphenoid,

nerves & vessels: Otic ganglion, V3, Accessory meningeal artery, Lesser petrosal nerve, and Emissary veins from pterygoid plexus to cavernous sinus

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9
Q

Foramen spinosum

Bone

specific area

nerves & vessels

A

Bone: sphenoid

specific area: posterior laterally to the foramen ovale

nerves & vessels: middle meningeal artery along with the meningeal branch of the mandibular nerve

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10
Q

Carotid foramen

Bone

specific area

nerves & vessels

A

Bone: petrous portion of temporal bone

specific area

nerves & vessels: internal carotid

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11
Q

foramen lacerum

Bone

specific area

nerves & vessels

A

Bone: temporal

specific area: At the apex of the petrous temporal bone is a gap where temporal bone does not reach the suture formed between the occipital and sphenoid bones, junction of petrous temporal, sphenoid, and occipital bones

nerves & vessels: small emissary vein and very small branches of the ascending pharyngeal artery (carotid artery passes over this)

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12
Q

Internal acoustic meatus

Bone

specific area

nerves & vessels

A

Bone: temporal bone

specific area: posteromedial aspect of the petrous portion of the temporal bone.

nerves & vessels: vestibulocochlear and facial nerves

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13
Q

Stylomastoid Foramen

Bone

specific area

nerves & vessels

A

Bone: temporal bone

specific area: petrous portion of temporal bone lateral to the jugular foramen

nerves & vessels: facial nerve

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14
Q

Jugular Foramen

Bone

specific area

nerves & vessels

A

Bone: temporal

specific area: between the petrous portion of the temporal bone and the occipital bone in the petro-occipital suture inferior to the internal auditory meatus

nerves & vessels:

anterior region- vagus, glossopharyngeal, and accessory nerves, along with the inferior petrosal venous sinus.

posterior region- sigmoid venous sinus as it transitions to the internal jugular vein.

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15
Q

Hypoglossal canal

Bone

specific area

nerves & vessels

A

Bone: occipital

specific area: superior to the occipital condyles

nerves & vessels: CN XII

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16
Q

Foramen Magnum

bone

nerves & vessels

A

Bone: occipital

nerves & vessels: spinal accessory nerves (XI) and vetebral arteries

17
Q

what structures enter and exit the Pterygopalatine Fossa

A

enter: 3rd part of the maxillary artery, V2, Nerve of pterygoidcanal
exit: Infraorbitaland zygomatic nn, Greater and lesser palatine nn, Nasopalatine nerve and sphenopalatine artery

18
Q
A
19
Q

describe where the PPF is located

A

PPF lies posterior to the maxilla and anterior to the lateral pterygoid plate

20
Q

what is the significance of the ptergoidmaxillary fissure

A

It is the lateral entrance of the PPF. The maxillary artery enters the PPF from the infratemporal fossa by traveling through the pterygomaxillaryfissure.

21
Q

describe the enterance of V2 into the PPF

A

The maxillary division of CNV enters the PPF from the middle cranial fossa by traveling through the foramen rotundum.

22
Q

how do autonomics enter the PPF

A

Autonomics (nerve to the pterygoid canal) enter the PPF through the pterygoid (Vidian) canal

This opening is located inferior and medial to the foramen rotundum.

23
Q

significance of the inferior orbital fissure

A

The infraorbital and zygomatic nn exit the PPF and enter the orbit by traveling through the inferior orbital fissure

24
Q

what is the significance of the greater palatine canal

A

The greater and lesser palatine nn exit the PPF by traveling through the greater palatine canal. This canal bifurcates into the greater and lesser palatine foramina and delivers the greater and lesser palatine nerves to the roof of the oral cavity

25
Q

what is the significance of the greater palantine canal

A

The greater and lesser palatine nn exit the PPF by traveling through the greater palatine canal. This canal bifurcates into the greater and lesser palatine foramina and delivers the greater and lesser palatine nerves to the roof of the oral cavity

26
Q

significance of the sphenopalatine foramen

A

Recall that the maxillary artery enters the PPF through the pterygomaxillary fissure. A branch of that artery, the sphenopalatine artery (represented by the blue pipe cleaner), passes from the pterygopalatine fossa through the sphenopalatine foramen and into the nasal cavity

27
Q

significance of the incisive canal

A

nasopalatine nerve exits the pterygopalatine dossa here

brain and behavior week 3 (6 decks)

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