3. El Potencial De Acción Flashcards

1
Q

¿Qué es un potencial de acción?

A

Secuencia rápida de eventos que aumentan y disminuyen el potencial de membrana en poco tiempo.

(Señales nerviosas. Lenguaje neuronal)

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

Fases generales del potencial de acción

A

Despolarización. Canales de Na+

Repolarizacion. Canales de K+

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

Tetrodotoxina

A

Parestesias
Entumecimiento
Náuseas y vomito
Parálisis
Disfunción cardíaca
Convulsiones
Coma y muerte

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

Para cada célula el potencial de acción siempre tendrá…

A

La misma amplitud

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

La codificación de la intensidad de estímulo no se da por la … del potencial sino por la …

A

Amplitud
Frecuencia

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

No todos los potenciales de acción son 100% iguales

A

Verdadero

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

Axones del nervio ciático

A

> 1.3 m

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

El potencial muscular permite

A

La contracción

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

Conducción saltatoria

A

Axón mielinizado

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

Type of Nerve Fibre

A

A-alpha
A-beta
A-delta
C

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

A-alpha

A

Propioception
Myelinated
Diameter (micrometers): 13-20
Conduction. Speed (m/s): 80-120. Plane ✈️

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

A-beta

A

Touch
Myelinated
Diameter (micrometers): 6-12
Conduction. Speed (m/s): 35-90. F1 🏎️

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

A-delta

A

Pain (mechanical and thermal)
Myelinated
Diameter (micrometers): 1-5
Conduction. Speed (m/s): 5-40. Bici 🚲

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

C

A

Pain (mechanical, thermal and chemical)
Non-myelinated
Diameter (micrometers): 0.2 - 1.5
Conduction. Speed (m/s): 0.5 - 2 . Caminar🚶‍♂️

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