Lecture 11 (2/26) Flashcards Preview

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Flashcards in Lecture 11 (2/26) Deck (20):
1

Anesthetic Drugs

Manufactured to do the following:

They block the release of neurotransmitters into the synaptic cleft

They form a stable complex with the receptors in the post-synaptic membrane, preventing them from combining with the neurotransmitters

Prevents the message to be sent through the chain of cells

2

Cytoarchitectonic Maps

Structural maps that define functions

2 regions:
Motor vs. Sensory

3

Association Areas

Areas of the brain that are not defined as motor or sensory

Examples: 18 and 19

4

Neocortex (Overview)

The portion of the cortex that we see from the outside.

Throught to be the newest portion of the brain in our evolutionary process

Largest portion of the cortex - about 90%

Found only in mammals

5

Neocortex (Structures)

Lobes
Gyri
Sulci

Cells divided into 6 distinguishable layers

6

Cellular Layers of the Neocortex

6 Total

Molecular Layer
External Granular Layer
External Pyramidal Layer
Internal Granular Layer
Internal Pyramidal Layer
Multiform Layer

7

Korbinian Brodmann

Divided the cortex into 47 numbered areas

8

4

Pre-central Gyrus

9

6

Region just before the primary motor cortex, the pre-motor cortex

10

3, 1, & 2

Primary somatosensory cortex

11

22

Wernicke's area

12

39

Area occupied by the angular gyrus

13

40

Supramarginal Gyrus

14

17

Primary visual cortex

15

44 & 45

Area Triangularis, Broca's area

16

42

Primary Auditory Cortex

17

20, 21, & 38

Involved in different aspects of language processing

18

Allocortex (Overview)

The remaining 10% of the cortex

Has early evolutionary history, oldest portion of the brain

Found in mammals, reptiles, birds, and amphibians

19

Allocortex (Structures)

Limbic Lobe
Thalamus
Hypothalamus

20

Limbic Lobe

Hippocampus
Amygdala
Parahippocampal Gyrus
Cingulate Gyrus
Septal area