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Anatomy > Dural Sinuses > Flashcards

Dural Sinuses Flashcards

1
Q

At the point of crossing

A

Trochlear Nerve

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2
Q

In font of the crossing point

A

Oculomotor Nerve

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3
Q

Anterior clinoid process

A

Free margin

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4
Q

Posterior clinoid process

A

Attached margin

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5
Q

Occipital sinus

A

Falx cerebelli

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6
Q

Attached to the anterior and posterior clinoid processes

A

Diaphragma sellae

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7
Q

Attached to the internal occipital crest and inferior surface of tentorium cerebelli

A

Falx cerebelli

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8
Q

It ends by passing through the posterior compartment of the jugular foramen to continue as the internal jugular vein.

A

Sigmoid sinus

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9
Q

The right sinus is usually bigger than the left, because?

A

it is usually the continuation of the superior sagittal sinus.

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10
Q

It may open into a dilatation called confluence of sinuses at the internal occipital protuberance.

A

Superior sagittal sinus

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11
Q

They form with the cavernous sinuses a venous circle (circular sinus) around the hypophysis cerebri.

A

Intercavernous sinuses

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12
Q

It is the smallest of the cranial sinuses.

A

Occipital sinus

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13
Q

It is situated in the attached margin of the falx cerebelli.

A

Occipital sinus

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14
Q
  • It is usually single, but occasionally there are two, right and left sinuses. They arise from the right and left transverse sinuses. They fuse together to form a single sinus which ends into the sigmoid sinus in each side. It communicates around the margin of the foramen magnum by several small meningeal veins.
A

Occipital sinus

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15
Q

Occipital artery

A

External carotid artery

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16
Q

Supratrochlear and supraorbital

A

Internal carotid artery

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17
Q

Superifical temporal

A

External carotid artery

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18
Q

Posterior auricular

A

External carotid artery

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19
Q

Angular artery

A

Facial artery

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20
Q

It has a lower border which is concave and free

A

Falx cerebri

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21
Q

It forms the tentorial notch around the midbrain

A

Free margin of tentorium cerebelli

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22
Q

It runs along the posterior half or two thirds of the free margin of falx cerebri

A

Inferior sagittal sinus

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23
Q

SS is formed by?

A

The union of ISS and great cerebral vein

24
Q

Uncus of temporal bone and trigeminal ganglion

A

Lateral relation of cavernous sinus

25
Q

Sphenoidal air sinus

A

Medial boundary of cavernous sinus

26
Q

Speration of the scalp from the skull occurs at which layer

A

4th

27
Q

A layer in the scalp that bleeds profusely of injured?

A

Second layer

28
Q

Bleeding in this layer may reach eyelids and cause black eyes

A

4th layer

29
Q

Facial artery terminates as

A

Angular artery

30
Q

Dangerous position of external jugular vein

A

1 inch above the clavicle where it pierces the deep fascia of the roof of the posterior triangle

31
Q

Opthalmic nerve

A

Supraorbital supratrochlear lacrimal infra trochlear external nasal

32
Q

Maxillary

A

Infraorbital, zygomaticotemporal, zygomaticofacial

33
Q

Mandibular sensory branches

A

Meningeal
Buccal
Auriculotemporal
Lingual
Mental

34
Q

Cavernous sinus comminicates with
With the facial vein through

A

through the superior ophthalmic vein.

35
Q

Cavernous sinus communicates With the pterygoid and pharyngeal plexus of veins through emissary veins passing through

A

foramen ovale or foramen lacerum.

36
Q

Cavernous sinus drains to transverse sinus and internal jugular vein through

A
  1. Through the superior petrosal sinus to end in the transverse sinus.
  2. Through the inferior petrosal sinus to end in the internal jugular vein
37
Q

Infection of cavernous sinus is transmiited to the brain through

A

middle cerebral vein.

38
Q

Infection of cavernous sinus causes exopthalmos through

A

Internal carotid artery

39
Q

Sphenoparietal

A

Paired venous sinuses
Tributaries of cavernous sinus

40
Q

Greater auricular nerve is related to the auricle

A

Posterior

41
Q

auriculotemporal nerve is related to the auricle

A

Anteriorly

42
Q

Nerves posterior to the auricle are supplied by

A

Cervical spinal nerves

43
Q

Sternomastoid (sternocleidomastoid) muscle

A

spinal accessory nerve (XI), with sensory supply from C2 & C3 (for proprioception).

44
Q

Omohyoid muscle

A

ansa cervicalis.

45
Q

Transverse cervical nerve is from which category of the nerves in the posterior triangle

A

Cutanous branches of the cervical plexus

46
Q

Which auricular nerve is present in the posterior triangle, is it in front of the ear or posterior to it

A

Great auricular, posterior

47
Q

Which belly of omohyoid is in the posterior triangle

A

Inferior belly

48
Q

Which lymph nodes are present in posterior triangle

A

Occipital and supraclavicular lymph nodes

49
Q

Which s is the first s in the posterior triangle

A

Scalenus medius

50
Q

Superomedial boundary

A

rectus capitis posterior major.

51
Q

Superolateral boundary of suboccipital triangle

A

superior oblique of head (= obliquus capitis superior).

52
Q

Which part of nerve 11 is present in posterior triangle

A

Spinal

53
Q

Floor of suboccipital triangle

A

posterior atlanto-occipital membrane and posterior arch of atlas

54
Q

semispinalis capitis & splenius capitis.

A

-Floor of the posterior triangle
-roof of suboccipital triangle

55
Q

Infrahyoid muscles supply

A

All infrahyoid muscles are supplied by ansa cervicalis (Cl, C2&C3) except thyrohyoid
muscle (supplied by Cl only).

56
Q

Anterior facial vein is present in which triangle

A

Digastric

57
Q

Nerve to mylohyoid

A

Submental triangle
Digastric triangle

Anatomy (7 decks)

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