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MBBS III Sem II > Case 3 Anatomy > Flashcards

Case 3 Anatomy Flashcards

Learning anatomy for case 3

1
Q

the skull is comprised of the ___ and the ___

A

Neurocranium and the viscerocranium

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2
Q

The neurocranisum is the ___

A

bony covering of the brain and meninges

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3
Q

The viscerocranium is the

A

facial skelton + mandible

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4
Q

The coronal suture joins the

A

Frontal and 2 parietal bones

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5
Q

The sagittal suture joins the

A

2 parietal bones

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6
Q

The Bregma is the ___

A

Joining of the coronal and sagittal sutures

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7
Q

The lambdad joins which 3 bones?

A

Parietal, temporal and occipital bones

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8
Q

What is the superior nuchal line

A

The surface attachment of tentorium cerebrelli

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9
Q

What is the external occipital protuberance

A

Attachment of the nuchal ligament

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10
Q

Name the boundaries of the temporal fossa

A

Posteiro: super and inf temproal lines
Anterior : frontal and zygomatic bones
Inferior: zygomatic arch

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11
Q

What opens into the temporal fossa

A

External acoustic meatus and mastoid process

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12
Q

What is the pterion

A

Intersecion of the frontal, parietal, temporal and sphenoid bones

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13
Q

What are the 2 layers of the dura mater?

A

External endosteal and internal meningeal layer

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14
Q

What is another name for the periosteum of the neurocranium?

A

External endosteal dural layer

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15
Q

What does the arachnoid mater form?

A

Blood arachnoid barrier

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16
Q

What o the arachnoid villi project into?

A

Dural venous sinus

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17
Q

What is housed within the sub-arachnoid space?

A

The CSF

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18
Q

What are the arachnoid trabecular?

A

Fine extension to link the arachnoid and pia mater

19
Q

The blood supply to the periosteal dura mater is from the ___, whereas the internal meningeal later is supplied by the ___

A

Adjacent bone

Middle meningeal artery +/- occipital, ant ethmoidal

20
Q

What 3 nerves innervate the dura mater?

A

Ophthalmic, Maxillar and Mandibular division of CNV

21
Q

What part of the dura mater is innervated by the vagus nerve?

A

Posterior fossa cranial floow

22
Q

What is the location of the falx cerebri?

A

Midline of 2 cerebral hemispheres (longitudinal tissue); from frontal crest at crest galli to internal occipital protuberance

23
Q

Where is the free margin of the falx cerebri?

A

Above the corpus callosum

24
Q

The tentoriu cerebelli separates the ___ lobe from the ___

A

Occipital lobe from the cerebellum

25
Q

The diaghramga sella will surround which important structure?

A

Pituitary gland

26
Q

The falx cerebelli is located between what 2 structures

A

The 2 cerebellar hemispheres

27
Q

The superior sagittal sinus is located between the layers of what dura mater?

A

Falx cerebri

28
Q

What will the superior sagittal sinus become?

A

The transverse sinus

29
Q

Where does the inferior sagittal sinus begin and where does it run?

A

Begins at crista galli and runs between the free margins of falx cerebri

30
Q

The straight sinus connects what to sinuses?

A

Transverse and infeiror sagittal sinus

31
Q

Outline the path of the transverse sinus

A

Begins at internal occipital protuberance, runs horizontally and at temporal one junction, turns downwards to form sigmoid sinus

32
Q

The sigmoid sinus will run through what structure prior to forming got the IJV?

A

Jugular Foramen

33
Q

What are the relations of the Anterior, posterior and inferior horns of the lateral ventricles?

A

Anterior : inf = caudate nucleus, sup = corpus callosum
Postioer = occipital lobe
Infeiorn = amygdala, hippocampus

34
Q

What structure connects the fourth and third ventricles?

A

Interventricular foramen

35
Q

Which ventricle is located between the thalami?

A

Third Ventricle

36
Q

Where does the cerebral aqueduct lead?

A

To the fourth ventricle

37
Q

Where is th fourth ventricle located?

A

Posterior to the pons

38
Q

What are the cranial and caudal boders of th fourth ventricle?

A

cranial border = sup cerebellar peduncles

caudal border = inf cerebellar peduncles

39
Q

What will the fourth ventricle open into?

A

2 lateral and 1 medial foramen

40
Q

What cells form the CSF?

A

Ependymal cells of the choroid plexus

41
Q

Where is the CSF formed?

A

Inf horn of lat ventricles, IV foramen and third ventricle

42
Q

Define hydrocephalus

A

Abnormal increase in CSF within the skull

43
Q

Whilst Non-communicating hydrocephalus is characterised by an obstruction of CSF ___, communicating hydrocephalus is characterised by an obstruction of CSF___.

A

CSF flow

CSF reabsorption

44
Q

Non-communicating hydrocephalus typically shows compensatory ___ ___

A

Brain atrophy (look in gyri, ventricular size

MBBS III Sem II (16 decks)

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