October 31, 2024

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

Author: Freesciencelessons via YouTube
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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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