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Anatomy > Exam II Lecture VII > Flashcards

Exam II Lecture VII Flashcards

1
Q

Layers of scalp

A 
SCALP
Skin
Connective tissue
Aponeurosis
Loose areolar tissue
Pericranium
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2
Q

Cutaneous nerve supply to scalp is via

A 
Trigeminal nerve (CN V)
Cervical spinal nerves:
-Greater auricular
-Greater occipital
-Lesser occipital
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3
Q

Vascular supply to scalp via

A

Branches of external carotid

Branches of internal carotid

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4
Q

Branches of external carotid include

A

Occipital
Posterior auricular
Superficial temporal

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5
Q

Branches of internal carotid include

A

Supratrochlear

Supraorbital

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6
Q

Brain is supplied by what arteries - these arteries are located where and anastomose to form what

A

Two internal carotid arteries
Two vertebral arteries
Located in subarachnoid space
Anastamose to form circle of willis

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7
Q

Circle of willis function

A

Interconnects the internal carotid and vertebral system to create alternative routes for blood flow in case of blockage

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8
Q

Components of circle of willis

A

Internal carotid arteries
Anterior/posterior/middle cerebral arteries
Anterior/posterior communicating arteries

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9
Q

Spaces in brain superficial to deep

A 
Epidural space
Dura mater
Subdural space
Leptomeninx
-arachnoid
-pia mater
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10
Q

Anterior meningeal arteries are from

A

Ethmoidal arteries and internal carotid

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11
Q

Middle meningeal artery is from

A

Maxillary artery

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12
Q

Emissary veins are between

A

Dural venous sinuses and external veins

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13
Q

Blood vessels of meninges includes

A

Anterior/middle meningeal arteries
Emissary veins
Diploic veins
Cerebral veins

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14
Q

Is there any epidural space in the skull

A

No

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15
Q

Dura mater

A

Around spinal cord, dura mater forms a CT tube that is separated from the bone of the vertebral foramina by a space called epidural space

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16
Q

Dura mater serves as the ______ in the cranial cavity

A

Periosteum

17
Q

Falx cerebri

A

Midline fold of dura mater between two cerebral hemispheres

18
Q

Tentorium cerebelli

A

Dural folds between cerebellum and occipital lobes of cerebral hemispheres

19
Q

Falx cerebelli

A

Dural fold between two cerebellar hemispheres

20
Q

Diaphragma sellae

A

Dural fold over hypophyseal fossa

21
Q

Dural sinuses are

A

Endothelial lined spaces between periosteal and meningeal layers of the dura

22
Q

Superior sagittal sinus

A

Lies along superior margin of falx cerebri

Begins at crista galli and ends at occipital protuberence

23
Q

Inferior sagittal sinus

A

Lies along inferior margin of falx cerebri

Ends in straight sinus

24
Q

Straight sinus

A

Lies at intersection of falx cerebri and tentorium cerebelli
Formed at intersection of inferior sagittal sinus with great cerebral vein
Joins confluence of sinuses

25
Q

Confluence of sinuses

A

Common confluence of superior sagittal, transverse, and straight sinuses

26
Q

Transverse sinuse

A

Begins at confluence of sinuses
Extends along edges of tentorium cerebri
Right receives blood from superior sagittal
Left (dominant) receives blood from straight sinus

27
Q

Sigmoid sinus

A

Continuations on either side of straight sinus
S shaped
End at jugular foramina
Become internal jugular veins

28
Q

Cavernous sinus

A

Large venous plexus on each side of sella turcica

29
Q

Superior petrosal sinus

A

Runs on either side from cavernous sinus to junction of transverse and sigmoid sinus

30
Q

Inferior petrosal sinus

A

Run on either side from cavernous sinus to junction of sigmoid sinus and internal jugular vein

31
Q

CSF flow chart

A 
Choroid plexuses-->
Ventricles-->
Through apertures-->
Into subarachnoid space-->
Through arachnoid villi-->
Into dural venous sinuses-->
Into internal jugular veins
32
Q

Space between the arachnoid and pia mater is _____ and is filled by

A

Subarachnoid space filled with CSF

33
Q

What allows CSF to flow from subarachnoid space into dural sinuses

A

Arachnoid villi

34
Q

What attaches arachnoid to pia mater

A

Delicate strands of CT arachnoid trabeculae

35
Q

Pia mater is what layer

A

Innermost layer

36
Q

Arterial supply to upper part of spinal cord

A

Anterior spinal artery
Sulcal branches
Posterior spinal arteries

37
Q

Anterior spinal artery is from

A

Union of vertebral arteries

38
Q

Sulcal branches that go into anterior median fissure are from

A

Anterior spinal artery

39
Q

Posterior spinal arteries branch from

A

Vertebral arteries or posteroinferior cerebellar arteries

Anatomy (34 decks)

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