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Flashcards in Imaging of the brain Deck (27)
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1
Q

Function of coronal suture

A

Separates frontal and parietal bones

2
Q

Function of sagittal suture

A

Separates parietal bones

3
Q

Function of lambdoid suture

A

Separates parietal from occipital

4
Q

Function of squamous suture

A

Separates temporal from parietal

5
Q

Which suture fuses early on in life?

A

Metopic

6
Q

What are the cranial fossa separated by?

A

Sphenoid and petrous bones

7
Q

Function of Sylvian fissures

A

Separates frontal from parietal lobe

8
Q

Where is primary motor cortex?

A

Anterior to central sulcus, within posterior frontal lobe

9
Q

Where is primary sensory cortex?

A

Posterior to central sulcus, within anterior parietal lobe

10
Q

Function of transverse fissure

A

Separates parietal from occipital lobe

Also called Pareto-occipital fissure

11
Q

Where are the temporal lobes?

A

Floor of middle cranial fossa

Extend towards occipital lobe

12
Q

What is the tentorium?

A

Thick band above cerebellum

13
Q

Where are the cerebellar tonsils?

A

Descend through foramen magnum in disease (e.g. increased ICP)

14
Q

What is a Chiari malformation?

A

Tonsils pointed inferiorly, issues with cervical spine and thoracic/cervical cord

15
Q

What is the lentiform nucleus made from?

A

Putamen and globus pallidus

16
Q

What is the corpus callousum?

A

Bundle of white matter tracts

17
Q

Function of corpus callous

A

Communication between hemispheres

18
Q

How does hydrocephalus form?

A

Cysts in pineal gland

19
Q

What connects the third ventricle to the lateral ventricle?

A

Foramen of Monro

20
Q

What are the basal cisterns?

A

CSF reservoirs around base of brain

21
Q

What is the internal carotid artery formed from?

A

Two middle cerebellar arteries

22
Q

What does the basilar artery separate into?

A

Posterior cerebral arteries

23
Q

Where is the most common site of an aneurysm?

A

Anterior communicating arteries

24
Q

Risk factors for venous thrombosis

A

Hormonal imbalance, prothrombotic, infection, tumours

25
Q

Symptoms of venous thrombosis

A

Headache, decreased consciousness, vomiting, vision

26
Q

Main drainage of the brain

A

Cortical veins, straight sinus, transverse sinus which runs into sigmoid sinus

27
Q

What do all veins drain into?

A

Internal cerebral veins