Smooth Muscle Tissue Anatomy - Mnemonic, Structure, Contraction, Single-Unit, Multi-Unit

Smooth muscle tissue anatomy review. In this video, I review the key concepts of smooth muscle tissue.

This video covers smooth muscle location (with included mnemonic to help you remember). It also covers the basics of the smooth muscle cell's structure, smooth muscle layers (longitudinal, circular, and oblique), smooth muscle contraction, single-unit smooth muscle vs multi-unit smooth muscle, and more.

Smooth muscle cells develop into a fusiform shape. They do not contain myofibrils or sarcomeres, but they do utilize thin (actin) and thick (mysoin) filaments to contract via a sliding filament mechanism.

Because smooth muscle lacks myofibrils and sarcomeres, it lacks the striated (striped) appearance that characterizes skeletal and cardiac muscle tissue.

Smooth muscle cells also contain intermediate filaments that connect to dense bodies. During smooth muscle contraction, myosin heads rise up and attach to thin (actin) filaments, pulling them forward. This causes the dense bodies to be pulled, which also pulls on the network of intermediate filaments (consisting of desmin and vimentin), causing contraction.

Smooth muscle develops in layers in some organs. The common layers include longitudinal and circular, but the stomach also has a third layer: an oblique layers.


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[RegisteredNurseRN]

Hey, everyone! Thanks for watching. Don't forget:

[zawarudo]

in just 9 minutes this video helped me to understand upto 50 slides in my chapter in physio plus the time of trying to understand the slides. Your a life saver thank you!!! plus I did the quiz in the description and got 100 first try :D

[nyimalhamo]

I cleared my NCLEX recently on my first attempt .
Can’t thank you enough Sarah and Ben for your lectures . It really helped me .

[rachael]

This is so incredible for med school. Tysm for the clear explanation and lots of images!

[abigailparker]

Thanks Ben ! I recently started nursing school and your A&P videos have really been helping me remember and understand ! Love the channel 🤣🤣🤣 the singing .. Love from Jamaica 🇯🇲

[vincentm]

Your channel is my favorite. It is a lifesaver for nurses who wants to keep on track.

[-mintsmedictutorials]

Thank you sir Ben work n well taught....great " STOVE "....
MIDDLE ur mini singing talent never made me bore...

[debranelson]

He explains the components and physics of smooth muscle tissue so well.

[PerfectlySpoiled]

This 9min video has taught me way more than my professors

[abbyvasquez]

thank you so much i understood this better !!

[dailydoseofmedicinee]

Functions of Smooth Muscles👍

The smooth muscle in the uterus helps a woman to push out her baby.

In the bladder, smooth muscle helps to push out urine.

Smooth muscle determines the flow of blood in the arteries.

Smooth muscles move food through the digestive tract.

[alexandrashields]

Ok, the One Nucleus song was amazing! haha

[sheikhzahoor]

I'm first one to watch ...love from Jammu and Kashmir (Indian occupied)...so much thanks to Sarah mam as well

[jazzlindanielle]

Great video! Thanks for the quiz and the awesome explanations! Also loved the Mnemonic & the analogies

[alexandrashields]

Wow! That was great, thanks so much. I'll check out your other videos :)

[connie]

Hi RegisteredNurseRN! What do pressure points mean on a phy. Assessment chart for General Survey?

[shantanushukla]

Hello Ben You are Superb Love You So Much and For Serah Mam and Josiah too Pls Make a Meet Up Plan through Google Meet or Come Live On Youtube Love From INDIA

[aishagammal]

am i the only med student here?! lol....

[rkumar]

I am indian student studying📚✏ biology