Jump to content

summation and tetanus


234ff

Recommended Posts

I am learning myology and encountered 2 problems in tetanus and summation:

  1. Unfused tetanus is just a continual summation of twitches if I am not mistaken. However, is it a MUST for summation / unfused tetanus to constantly increasing muscle tension from the photo (the graph) i.e. is this the definition?

Since we are in unfused tetanus when we hold something, and I can’t feel my biceps are constantly increasing in contraction / tension. (to my understanding, complete tetanus is when we are lifting up very heavy things only as it utilizes too much ATP) 

  1. Can I say the muscles are in tetanus during contracting (lifting), and also in tetanus during constantly contracted state (keep the thing holding up) Since tetanus is just a frequent action of sliding filaments, which is common in both actions?

Also, during tetanus, I don’t need to shorten my muscles anymore (just holding something still), but myosin heads are still power-stroking to shorten the sarcomere/muscle, may I ask how to explain this?

Thank you very much.

y9Vqu.jpg

Link to comment
Share on other sites

  • 4 weeks later...

hi, this is presumably different than my prediction but I shall ask though.

are you asking about IPSP and EPSP?

as I remember summation was a different subject or I might have confused.

I think that tetanus might be also different in comparison all of these. 

because in tetanus , when I pay attention to description of the illness, the contractile case is (presumably) continuous. 

Thus action potentials are also continuous. 

according to my knowledge an action potential definitely exists or does not exist. But not between these two probabilities.(I mean its existence was certain)

on the other hand yes summation is also a case, but how,I do not remember very well :)

Edited by ahmet
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.