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Anatomy > Skull > Flashcards

Skull Flashcards

0
Q

Foramen spinosum

A
  1. Middle meningeal artery

2. Meningeal branch of mandibular nerve

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1
Q

Foramen ovale

A
  1. Otic ganglion
  2. mandibular division of trigeminal
  3. Accessory meningeal artery
  4. Lesser petrosal nerve
  5. Emissary veins
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2
Q

Foramen rotundum

A

Maxillary division of trigeminal

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3
Q

Foramen lacerum

A
  1. Base of medial pterygoid plate
  2. Internal carotid artery - transverses upper 3rd
  3. Nerve and artery of pterygoid canal
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4
Q

Jugular foramen

A
  1. Anterior - inferior petrosal sinus
  2. Intermediate - glossopharyngeal, vagus, accessory
  3. Posterior - sigmoid sinus (becoming the internal jugular vein) and some meningeal branches from the occipital and ascending pharyngeal arteries
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5
Q

Foramen magnum

A
  1. Anterior and posterior spinal arteries
  2. Vertebral arteries
  3. Medulla oblongata
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6
Q

Stylomastoid foramen

A
  1. Stylomastoid artery

2. Facial artery

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7
Q

Superior orbital fissure

A

tendons of lateral rectus divide fissure in to superior and inferior parts
Superior part
1. Trochlear nerve (IV)
2. Frontal and lacrimal nerves branches of opthalmic nerve V1
3. Superior orbital vein

Inferior

  1. Occullomotor nerve (III)
  2. nasociliary branches of opthalmic nerve V1
  3. Abducent nerve (VI)
  4. Inferior orbital vein
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8
Q

Blood supply to scalp

A
  1. External carotid artery - superficial temporal, posterior Auricular, occipital branches
  2. Internal carotid artery - supratrochlear and supraorbital branches of opthalmic artery
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9
Q

Cribriform plate

A

Olfactory nerve (CN I)

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10
Q

Carotid canal

A

Internal carotid artery

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11
Q

Inferior orbital fissure

A
  1. Zygomatic branch of maxillary nerve
  2. Infraorbital artery
  3. Infra orbital vein
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12
Q

Optic canal

A

Optic nerve (CN I)

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13
Q

Nerve supply to scalp

A
  1. Supratrochlear and supraorbital branches of trigeminal nerve - anterior
  2. Posterior rami of C2 and C3 - posterior
  3. Auricotemporal nerve - lateral
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14
Q

What does the nasociliary nerve supply

A
  1. Ethmoidal sinuses
  2. Sphenoidal sinuses
  3. Skin upper eyelid and nose
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15
Q

Inferior ramus of Oculomotor nerve

A
  1. Inferior rectus
  2. Medial rectus
  3. Inferior oblique
16
Q

The superior ramus of Oculomotor nerve

A
  1. Levatorpalpebrea superioris

May give rise to Ptosis if cut

17
Q

Facial nerve - intracranial branches

A
  1. Greater petrosal nerve
  2. Nerve to stapedius
  3. Chorda tympani
18
Q

Facial nerve - extra cranial branches

A
  1. Posterior Auricular nerve
  2. Branch to posterior belly of digastric as well as stylohyoid muscle
  3. Temporal branch of facial nerve
  4. Zygomatic branch of facial nerve
  5. Buccal branch of facial nerve
  6. Marginal mandibular branch of facial nerve
  7. Cervical branch of facial nerve
19
Q

Cavernous sinus

A

Situated bilaterally on each side of the sella turcica on the upper body of the phenoid
Lies both beneath and lateral to pituitary gland
Each sinus extends from superior orbital fissure in front to the apex of the PETROUS part of temporal bone behind
Both opthalmic and maxillary divisions of the trigeminal nerve run forward of the lateral walls of sinus
Both 3rd and 4th CN run through the lateral wall of the sinus

20
Q

Unpaired cranial venous sinus

A

Superior Sagittal sinus

21
Q

Cranial venous sinuses

A
  1. Superior Sagittal sinus
  2. Inferior Sagittal sinus
  3. Straight sinus
  4. Transverse sinus
  5. Sigmoid sinus
  6. Confluence of sinuses
  7. Occipital sinus
  8. Cavernous sinus
22
Q

What does the inferior Sagittal sinus drain in to?

A

Strait sinus

23
Q

What does the superior Sagittal sinus drain in to?

A

Typically becomes right transverse sinus or confluence of sinus

24
Q

What does the strait sinus drain in to?

A

Typically becomes left transverse sinus or confluence of sinuses

25
Q

What does the occipital sinus drain in to?

A

Confluence of sinuses

26
Q

What does the sphenoparietal sinus drain in to?

A

Cavernous sinuses

27
Q

What does the cavernous sinuses drain in to?

A

Superior and inferior petrosal sinus

28
Q

What does the superior petrosal sinus drain in to?

A

Transverse sinus

29
Q

What does the transverse sinus drain in to?

A

Sigmoid sinus

30
Q

What does the inferior petrosal sinus drain in to?

A

Internal jugular vein

31
Q

What does the sigmoid sinus drain in to?

A

Internal jugular vein

Anatomy (28 decks)

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