December 26, 2024
A Level Biology Revision (Year 13)

A Level Biology Revision (Year 13) “Reflex Actions”

Author: Freesciencelessons via YouTube
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A Level Biology Revision (Year 13)

In this video, we look at reflex actions. First we look at why reflex actions are beneficial to an organism. We then explore the pathway of neurones in a reflex action. And finally, we look at the knee jerk reflex.

Image credits:

Grasp reflex
https://commons.wikimedia.org/wiki/File:Greifreflex.JPG
User:Mattes, Public domain, via Wikimedia Commons

Reflex
https://commons.wikimedia.org/wiki/File:Imgnotra%C3%A7at_arc_reflex_eng.svg
MartaAguayo, CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Knee reflex (used as template by S. Donnelly)
https://commons.wikimedia.org/wiki/File:Patellar_tendon_reflex_arc.png
Amiya Sarkar, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

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