Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PSY1048 Intra > Cours 4 > Flashcards

Cours 4 Flashcards

1
Q

Seuil

A

Potentiel membranaire nécessaire ->

Na+ > K+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Phase ascendante

A

Potentiel interne négatif ->
Na+ -> dépolarisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Dépassement (overshoot)

A

Potentiel = 40 mV

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Phase descendante

A

Canaux Na+ fermés -> canaux K+ ouverts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Période réfractaire absolue

A

Dépolarisation = canaux Na+ inactifs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Hyperpolarisation (undershoot)

A

Retour au potentiel de repos.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Propagation orthodromique

A

Soma vers boutons terminaux

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Propagation antidromique

A

Boutons terminauxs vers soma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Axodendritique

A

Connection axone -> dendrite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Axosomatique

A

Connection axone -> soma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Axoaxonique

A

Connection axone -> axone -> soma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Types de neurotransmetteurs

A

Acide aminés, amines, peptides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Catégories de récepteurs

A

Ionotropique et métabotropique

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Potentiel post-synaptique excitateur (PPSE)

A

Récepteur -> Na+ = dépolarisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Potentiel post-synaptique inhibiteur (PPSI)

A

Récepteurs -> Cl- = hyperpolarisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Autorécepteurs

A

Avec protéine G -> production de second messagers

17
Q

Recyclage

A

Élimination -> neurotransmetteur -> rendre possible nouvelle communication

Peut se faire par diffusion passive

18
Q

Mécanisme agoniste

A

Augmente transmission

19
Q

Mécanisme antagoniste

A

Diminue transmission

20
Q

Systèmes modulateurs diffus du cerveau

A

Transmet messages par neurones (SNC)

21
Q

Systèmes modulateurs diffus ont en commun…

A

Associé -> neurotransmetteur
Petit ensemble de neurones
Dans tronc cérébral

22
Q

4 principaux systèmes modulateurs

A

Sérotonine
ACh
Dopamine
NA

23
Q

Inhibiteurs sélectifs de la recapture de la sérotonine (ISRS)

A

Prolongent action -> sérotonine -> réduisent sa recapture

24
Q

Noyau accumbens

A

Héroïne, nicotine, cocaïne le stimulent

PSY1048 Intra (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions