Motor unit | Organ Systems | MCAT | Khan Academy
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- Опубліковано 21 вер 2024
- Created by Matthew Barry Jensen.
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I am taking a physiology course online and I find having videos like this is extremely helpful! This video is very well explained and also uses good visual cues. It is also very helpful b/c it uses the same terminology as the course
Melody Hall I
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I'm taking health and nutrition and I find the video more compelling than about how helpful this can be and uses great cues!
Very well described.... Thank you ☺
Etymologies
ate 16th century: from French (verb), (noun), from late Latin , from Greek, ‘lack of food’, from ‘poorly nourished’, from ‘without’ + ‘food’.
The specific epithet is
derived from the Latin fascicularis 'in bundles' or 'clustered',
referring to its habit of growing in clumps.
Twitches happen in bundles? I guess, not sure, doesn't matter either, we get the meaning for this one.
hypo-under
Meaning: "tone" (from PIE root *ten- "to stretch") + abstract noun ending -ia. See definitions of .
early 16th century (as a noun denoting reflection): from Latin ‘a bending back’, from ‘bend back’ (see reflect).
late 16th century: modern Latin, from Greek, neuter of ‘dried up’, from ‘dry up’.
Which one is a part of motor unit?
A. Dorsal root
B. Peripheral nerve
C. Anterior horn cell
D. Muscle fiber
Please answer ?
Muscle fiber I guess
Too good explanation..short n to the point..👍made it v clear..thank you
Can u plz explain whats the basic difference between pyramidal and extra pyramidal tracts?
This is the best video ever
great use of using digital diagrams and illustrations, and your cadence in speech was good.
Well explained. Thank you!!!
Well commented... Thankyou
Yepp!!
So the amount of electricity flowing through the nerve determines how much the muscle will contract?
No. For clarification on this look up the all-or-none principle. The amount of charge has no effect on stimulation summation. Only the NUMBER of action potentials fired. You could also read up on temporal summation vs spatial summation.
Thank you!
When you're watching to study for a biomed exam but he's basically describing your current ongoing symptoms. That sad "Aha" moment.
1. If a person is diagnosed with motor neuropathy does this refer to a lower motor neuron disorder? 2. Does motor neuropathy refer to the peripheral nervous system? Thanks
This guy’s been waiting for 3 years. Can someone answer his question?
@@manofgod7622 5 years, he really deserves an answer now
@@sw_antoine 6 years.. Bro need help.. Please answer
what's the difference between hypotonia and atrophy?
Is there any way to increase motor neuron
شرح جميل 👍
English Translation: Nice explanation👍
thank u .......
Is the size of the motor unit at all related to whether its a fast or slow twitch muscle?
Yes, big motor units contain big number of fast twitch muscle fibers and small motor units contain small number of slow twitch muscle fibers.
*wow*
Lower Motor Neuron. Neuromuscular Junction
fucking top video mate. im training to be a personal trainer and the training modules arent very clear on this subject, so for the assement i've spent about an hour searching for a descriptive source/ video. thanks heaps
when u increase the number of muscle cell, does that mean u form new motor units that attach to the new muscle cell?
Gabriel Llanes no, what i believe is when you increase the number of muscle cells by working out, you form more actine + myosine filaments. no new motor units will be formed, but the contraction of the muscle will be stronger due to the higher amount of acetine and myosine and thats the reason you'll feel stronger and can lift up heavier things.
@@SaimonFictureNadiaze what you described is hypertrophy. But I think he asked about hyperplasia
@@manofgod7622 Oo okay - I'm sorry - could you provide me the correct answer :)
thanks