Muscle stretch reflex | Organ Systems | MCAT | Khan Academy

Created by Matthew Barry Jensen.

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[Lukeee]

Khan academy helped me get into dental school and now they still got my back!!

[beyla]

Thanks so much! I've been reading and reading trying to find out what this stretch reflex is, but this had me understand in les than 10 minute!

[TheDeadlyBees]

THANK YOU. I'm studying for a neuroanatomy final, the Powerpoints for which are a confusing-ass mess, and now I actually understand how the stretch reflex works. Very clear and descriptive.

[jermainejguillory]

This was an AMAZING explanation of Gamma Loop activity. Thanks so much for this.

[silvertix]

Got me into med school
Keeping me going while I’m here
KUDOS! ❤️

[czicky]

your videos are amazing. I love the different colors and the clear, simple explanations!

[BZSPIRIT]

This is the most straightforward explanation on this subject that I could find.  Thank you so much.

[gahanasrinivas]

Finally I understand what's knee jerk

[Bhuji]

Etymology

late Middle English: from French, from Latin, diminutive of ‘mouse’ (some muscles being thought to be mouse-like in form).

early 16th century (as a noun denoting reflection): from Latin ‘a bending back’,
from ‘bend back’ (see reflect).mid 19th century:
from Latin ‘bringing towards’, from the verb, from ‘to’ + ‘bring’.mid 19th century:
from Latin ‘carrying out’, from the verb, from ‘out’ + ‘carry’.

late Middle English: shortening of Old French, or from Latin ‘thorn, prickle, backbone’.

[anniealcantara]

ok you are awesome! thank you so much. After much reading on the subject i had nothing until i saw this video. you just helped my lab report grade :)

[nickscurvy]

I'm just here to learn about my body and also understand why bouncing out of the hole on my squat makes it stronger. Thanks for the info :)

[hannibalchaw]

u just earn one more fan, thank you a lot!

[mermaidtale]

This makes much more sense than our Lecturers

[kabab]

Anyone else absolutely destroy their kneecaps trying to get the knee jerk while he was talking 😂

[tgastrula]

Wow I never knew that the ventral region was above the dorsal sensory segment! Good job Khan!

[mariospiteri]

Very well and simple explanation..! You earned another you tuber...! I want to understand why sometimes i have some tingiling in my foot...!? About 10 years ago i felt down walking on a garage ramp hitting my horse tail. I feld a big pain in my lower back when i felt down hitting on the horse tail..! Do you think that the tingiling in my foot its because of this..?? I have never feld this before a 1 year ago...!! What do you think about this plsss..??🤔

[cristinaferri]

very simple and clear! Thank you very much!!

[leomasterking]

Can you describe how foot drop occurs with injury at the lower back?

[funtimes]

I was under the impression that in a reflex arc the afferent neuron connect to an interneuron in the spinal cord before connecting to an efferent neuron

[mariepreuer]

Thank you so much, you are a life safer! :)