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Brain Power: First Aid Neurology > Neuroanatomy Pearls > Flashcards

Neuroanatomy Pearls Flashcards

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The Brain flashcards
1
Q

The central sulcus separates which lobes?

A

Frontal and parietal

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2
Q

What does the calcarine sulcus separate?

A

Superior and inferior halves of the occipital lobe

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3
Q

What does the sylvian sulcus separate?

A

Anterior part: temporal and frontal

Posterior part: temporal and parietal

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4
Q

Enumerate the parts of the homunculus from medial to lateral

A

Leg Trunk Arm Hand Face

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5
Q

Brodmann area and part responsible for:

  1. Auditory
  2. Visual
A
  1. Auditory B41, 42, 22 Transverse temporal gyri on the floor of sylvian fissure
  2. Visual B18, 19 Superior and inferior banks of the calcarine sulcus
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6
Q

What are the members of the limbic cortex?

A
  1. Amygdala
  2. Hippocampal formation
  3. Temporal lobe
  4. Hypothalamus
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7
Q

What parts are usually attacked by

  1. Rabies
  2. Herpes
A
  1. Rabies Hippocampus

2. Herpes Temporal lobe

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8
Q

What are the six tenets of the the neuron doctrine?

A

Each neuron is a/an ______ unit:

  1. Anatomic
  2. Functional
  3. Directional
  4. Genetic
  5. Pathologic
  6. Regenerative
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9
Q

How many pairs of spinal nerves are there?

A

8C 12T 5L 5S Total 30!

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10
Q

What does the law of Bell and Magendie state?

A

Dorsal roots convey sensory actions while the ventral roots convey motor axons

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11
Q 
What dermatome level?
1 Hood
2 Cape
3 Middle finger
4 Nipple
5 Umbilicus
6 Groin
7 Anus
8 Large toe
9 Small Toe
A 
1 Hood C2
2 Cape C3-4
3 Middle finger C7
4 Nipple T4
5 Umbilicus T10
6 Groin L1
7 Anus S5
8 Large toe L5
9 Small Toe S1
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12
Q

What forms the:

  1. Medial lemniscus
  2. Spinal lemniscus
  3. Lateral lemniscus
A

M: Fibers from the fasciculi gracilis and cuneatus
S: Spinal gray matter
L: Auditory pathway

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13
Q

What passes throught the medial longitudinal fasciculus?

A

Connects the vestibular nuclei with CN 3 4 6 and the spinal cord

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14
Q

Where does each the CN exit?

A 
I Cribriform plate
2 Optic foramen
3 4 6 V1 Superior orbital fissure
V2 Foramen rotundum
V3 Foramen ovale
7 and 8 Internal auditory meatus
9 10 and 11 Jugular foramen
12 Hypoglossal foramen
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15
Q

What are the 3 CN nuclei located on the midbrain?

A

Oculomotor M
Trochlear M
Trigeminal S

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16
Q

What are the 4 CN nuclei located on the pons?

A

5 M and S
6 M
7 M
8 S

17
Q

What are the 2 CN nuclei in the spine?

A

11 and 5

18
Q

The nucleus ambiguus is composed of?

A

Motor: 9 and 10

A for action

19
Q

The nucleus sollitarius is composed of?

A

Sensory: 7, 9 and 10

S for sensory and Seven

20
Q

What are the functions of the
rostral
caudal
parts of the reticular formation

A

Rostral above mid pontine to caudal end of diencephalon consciousness
Caudal below mid pontine to rostral end of spinal cord breathing and bp and feeding related actions (baboy)
B for baba

21
Q

The sensory component of the carotid body and sinus utilizes which cranial nerve?

A

9

22
Q

What is the ONLY sensory modality that DOES NOT pass through the thalamus?

A

Smell

23
Q

What thalamic relay nucleus is responsible for the 1 Trigeminal leminiscus
2 Medial lemniscus
3 Spinal lemniscus

A

1 Trigeminal leminiscus VPM
2 Medial lemniscus (N. gracilis) VPL
3 Spinal lemniscus VPL

24
Q

Where do the fibers from pain and temperature nerves decussate?

A

At or near the level of spinal cord entry

25
Q

Which 2 sensory modalities are exceptions to the contralaterality law?

A

Smell and hearing because they have equally decussated axons

26
Q

Where do fibers of the corticospinal component decussate?

A

Cervicomedullary junction

27
Q

Cerebellar hemisphere lesions causes paralysis/ ataxia of which side?

A

ipsilateral

28
Q

Where does the cortico ponto cerebellar pathway decussate?

How about the dentato thalamic pathway?

A

Basis pontis

Caudal midbrain

29
Q

Cerebellar lesions causes what kind of tremor?

How about basal ganglia lesions?

A

CEREBELLAR: Tremor during VOLITIONAL MOVEMENT NOT AT REST! Combined with uncoordinated contractions or ataxia of muscles during voluntary movement

BG: Tremors may have resting component and involuntary movements may also occur

30
Q

The neostriatum is composed of?

A

Putamen and caudate nucleus

31
Q

The lentiform nucleus is composed of?

A

Putamen and globus pallidus

32
Q

Where does the medial longitudinal fasciculus decussate?

A

Near the 6th nerve to make the medial rectus act equal to the lateral rectus

Brain Power: First Aid Neurology (10 decks)

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