cerebral cortex Flashcards

1
Q

convolutions

A

gyri

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2
Q

depressions

A

sulci

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3
Q

separates frontal from parietal

A

central sulcus (fissure of Rolando)

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4
Q

separates temporal from frontal

A

lateral sulcus

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5
Q

divides the brain into two hemispheres

A

median longitudinal fissure

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6
Q

between cuneus and precuneus

A

parieto occipital fissure

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7
Q

the parieto occipital fissure is between

A

cuneus and precuneus

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8
Q

divides occipital lobe into cuneus and lingual

A

calcarine fissure

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9
Q

the surface area of the cerebral cortex is increased by

A

convolutions

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10
Q

the cerebral cortex develops from the

A

pallium

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11
Q

2 divisions of pallium

A

paleo-/archipallium

neopallium

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12
Q

the neopallium is located b/n

A

hippocampus and the paleopallium

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13
Q

the paleopallium is located

A

lateral to the corpus striatum

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14
Q

the motor cortex contains a large amount of

A

pyramidal cells

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15
Q

sensory cortex is characterized by

A

granular cells

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16
Q

nerve cells of the cerebral cortex

A
  1. pyramidal cells
  2. stellate cells
  3. fusiform cells
  4. horizontal cells of cajal
  5. cells of martinotti
17
Q

large fusiform cells =

A

modified pyramidal cells

18
Q

smll multipolar cells present throughout the levels of the cortex

A

cells of martinotti

19
Q

layers of the cerebral cortex

A
molecular
external granular
external pyramidal
internal granular
internal pyramidal
multiform layer
20
Q

most superficial layer

A

molecular layer (plexiform layer)

21
Q

the molecular layer is located where

A

below the pia mater

22
Q

the external layer contains large number of

A

small pyramidal cells and stellate cells

23
Q

the external pyramidal layer is composed of pyramidal cells whose cell body size

A

increases from the superficial to the deeper borders of the layer

24
Q

this layer is composed of closely packed stellate cells

A

internal granular layer

25
Q

the internal granular layer is composed of

A

closely packed stellate cells

26
Q

the internal granular layer has a high conc of horizontally arranged fibers known as

A

External band of baillarger

27
Q

myelinated fibers of this layer form the ________

A

internal granular; stripe of Gennari

28
Q

the internal pyramidal layer gives rise to

A

corticospinal, corticobulbar, corticostriatal

29
Q

giant pyramidal cells in the motor cortex of the precentral gyrus

A

Betz cells

30
Q

the internal pyramidal layer contains a large number of horizontally arranged fibers that form the

A

internal band of Baillarger

31
Q

different types of cortex based on number of layers

A

neocortex

allocortex

32
Q

aka isocortex or homogenetic cortex

A

neocortex

33
Q

the allocortex includes

A

paleocortex

archicortex

34
Q

paleocortex includes

A

olfactory cortex

35
Q

archicortex includes

A

hippocampus and dentate gyrus