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COGS17 - Final > Review > Flashcards

Flashcards in Review Deck (12):
0

ionotropic (AMPA)

directly opens a channel that allows sodium to enter the cell

1

Metabotropic

when glutatate attaches at first nothing happens because mg2+ blocks it

repeated flood of sodium into the cell ejects the magnesium = turns NMDA site into AMPA site

repeated firings of the circuit: then it re-arranges - the more you use it the easier it is

receptor site separate from ion channel (usually)

2

activation of the AMPA sites changes...

...the post-synaptic cell

3

Dendritization

building new receptor sites

4

NE

jolt of emotion enables you to remember

absent during REM sleep = maybe why we're not storing those dreams

5

Spatial abilities involve

a variety of parts of the brain

hippocampus

6

Hippocampus and spatial memories

place cells: array of cells, create cognitive map

7

Retino-hypothalamic path

diaurnal clock - SCN (suprachiasmic nucleus): in the dark you will maintain a rhythm of awake and asleep
- regularity of 24 hours and flexibility to adapt to the seasons

interaction between the hypothalamus (SCN)

from the eye to the SCN to the pineal gland and back

8

zeitgeber

when full spectrum sunlight enters system it turns on ganglion cells (receptor cells) that follow their own path within the optic nerve to the SCN of the hypothalamus - to inform that nucleus whether it's day or night

influences exchange of info between pineal gland and SCN

9

pineal gland

releases melatonin

SCN tells it that it's day which shuts down production of melatonin

less sun = more melatonin

10

G-Protein

bonds with second messengers

opens the gate and allows ions to flow into the cell

Metabotropic process

11

Testes Determining Factor

on Y chromosome

turns on testosterone = directs changes, allows Wolffian system to develop