Neuroanatomy Flashcards

0
Q

What is the sea shell shaped structure in the brain ?

A

Hippocampus in the temporal lobe

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1
Q

What paired structure lies immediately medial to the putamen ?

A

Globus pallidus

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2
Q

Which structure is more rostral - optic chiasm or mammillary bodies ?

A

Optic chiasm

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3
Q

What cerebellar peduncles connect the pons to the cerebellum ?

A

Middle cerebellar peduncles

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4
Q

What cerebellar peduncles connect the midbrain to the cerebellum ?

A

Superior cerebellar peduncles

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5
Q

What cerebellar peduncles connect the medulla to the cerebellum ?

A

Inferior cerebellar peduncles

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6
Q

What fluid is produced in the ventricular system ?

A

Cerebrospinal fluid

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7
Q

Which structures of the ventricular system are connected by the interventricular foramen ?

A

The lateral and third ventricles

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8
Q

What is the interthalamic adhesion and where is it ?

A

It’s a gap between the third ventricles which had fibres passing through it to connect both sides of the thalamus

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9
Q

What is the clinical term for a rise in intracranial pressure due to obstruction of CSF ?

A

Hydrocephalus

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10
Q

What 2 structures does the cerebral aqueduct lie underneath ?

A

Runs the length of the BRAINSTEM underneath the inferior and superior colliculi

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11
Q

Where does the cerebral aqueduct open into 3rd ventricle ?

A

Junction between the midbrain and forebrain

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12
Q

What structures form the lateral walls of the 3rd ventricle ?

A

Thalamus and hypothalamus

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13
Q

What secretes CSF?

A

Choroid plexus

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14
Q

What is another name for interventricular foramen ?

A

Foramen of monro

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15
Q

At what level of the brain does the central canal open into the 4th ventricle ?

A

Medulla

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16
Q

What is the function of cerebral aqueduct ?

A

To connect the 3rd and 4th ventricles

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17
Q

Where are sensory neuron ganglions in the spinal cord ?

A

Dorsal root

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18
Q

Where are interneurons in the spinal cord ?

A

Dorsal horn

19
Q

In the spinal cord where are you most likely to find large neuronal cell bodies ?

A

Ventral horn which contains the motor neurons

20
Q

What neurons are present in the lateral column ?

A

Post ganglionic sympathetic neurons

21
Q

Which level of the spinal cord is the lateral horn seen most clearly ?

A

Thoracic

22
Q

Which tracts arise in the red nucleus and tectum and what one lies most dorsally ?

A

Rubrospinal tract from red nucleus and tectospinal tract from superior colliculus
Rubrospinal tract lies most dorsally
Rubrospinal - controls the tone of limb flexor muscles
Tectospinal - thought to mediate reflex movement in response to visual stimuli

23
Q

What is the fasiculus cuneatus and fasiculus gracilis?

A

They are dorsal column tracts which carry info about proprioception and discriminative touch
Gracilis- join spinal cord at sacral, lumbar, and lower thoracic levels
Cuneatus- join spinal cord at upper thoracic and cervical levels
Carry info from ipsilateral side of the body

24
Q

Which lies more laterally, fasiculus cuneatus or fasiculus gracilis ?

A

Fasiculus cuneatus

25
Q

What structures make up the basal ganglia ?

A

Caudate nucleus, putamen and globus pallidus

26
Q

Which electrodes in an EEG are positioned closest to the visual cortex ?

A

O1 and O2

27
Q

When would you expect to see beta waves ?

A

When you are awake and during REM sleep

28
Q

Which waves out of alpha and delta waves have the largest amplitude ?

A

Delta

29
Q

Why do delta waves have a larger amplitude ?

A

Because these waves are more active when you are sleeping so the firing is more consistent so they are more synchronised and therefore the waves can join together to create a bigger amplitude

30
Q

What types of clinical uses does the EEG have ?

A

Diagnosis of sporadic CJD - rare and fatal brain condition that causes brain damage to get worse and worse - due to an abnormal prion protein
Diagnosis of epilepsy
Diagnosis of brain death

31
Q

What are the cranial nerves in order ?

A
1- olfactory 
2- optic 
3- oculomotor 
4- trochlear 
5- trigeminal 
6- abducens
7- facial
8- vestibulocochlear 
9-glossopharyngeal 
10-vagus
11-accessory 
12- hypoglossal
32
Q

Which cranial nerves enter/exit the pons(pons/medulla boundary) ?

A

Abducens, facial, vestibuilocochlear and trigeminal

33
Q

Which cranial nerves enter/exit the midbrain ?

A

Occulomotor and trochlear

34
Q

Which cranial nerve exits on the dorsal surface ?

A

Trochlear

35
Q

Which cranial nerves have both afferent and efferent branches ?

A

Trigeminal
Facial
Glossopharyngeal
Vagus

36
Q

Which nerve would be used to carry info relating to very sweet food ?

A

Facial

37
Q

Which cranial nerve is used to carry info relating to bitter food ?

A

Glossopharyngeal

38
Q

Which cranial nerve is used to control chewing ?

A

Trigeminal

39
Q

What is the function of the pons ?

A

Connection between cerebrum and cerebellum involved in coordination of movements

40
Q

What is the function of the medulla ?

A

Peripheral control centre and origination of seven cranial nerves

41
Q

What does hemiplegia mean ?

A

An inability to move one side

42
Q

What are the clinical consequences of left optic tract lesion ?

A

Homonymous hemianopia- loss of sight in the right visual fields from both eyes

43
Q

What are the common causes of hemiballismus ?

A

Lesion, stroke or tumour

44
Q

What are common causes of upper motor neurons disease ?

A

Stoke or spinal cord transection

45
Q

What are the causes of Trigeminal neuralgia ?!

A

Pain in territory of one or more major subdivisions of trigeminal nerve caused by underlying osteitis of petrous temporal bone, compression of sensory nerve or unknown cause