Other
Exercise 2: Skeletal Muscle Physiology Activity 4: Tetanus in Isolated Skeletal Muscle
- Course
- Institution
PhysioEx Exercise 2 Activity 4 Exercise 2: Skeletal Muscle Physiology Activity 4: Tetanus in Isolated Skeletal Muscle
[Show more]
Seller
Follow
MaximGh
Reviews received
Content preview
26-5-2021 PhysioEx Exercise 2 Activity 4PhysioEx Lab Report
Exercise 2: Skeletal Muscle Physiology
Activity 4: Tetanus in Isolated Skeletal Muscle
Name:
Date
Session ID
Pre-lab Quiz Results
You scored 100% by answering 3 out of 3 questions correctly.
1 Stimulus frequency refers to
You correctly answered: the rate that stimulating voltage pulses are applied to an isolated whole
skeletal muscle.
2 Which of the following distinguishes a state of unfused tetanus from a state of complete (fused)
tetanus?
You correctly answered: Muscle tension increases and decreases during a state of unfused tetanus.
3 When the stimulus frequency reaches a value beyond which no further increases in force are
generated by the muscle, the muscle has reached its You correctly answered: maximal tetanic
tension.
Experiment Results
Predict Question
1 Predict Question: As the stimulus frequency increases further, what will happen to the muscle tension
and twitch appearance with each successive stimulus? Will there be a limit to this response?
Your answer: As the stimulus frequency increases, the muscle tension generated by each successive
stimulus will increase. There will be a limit to this increase.
Stop & Think Questions
1 What begins to happen at around 80 msec?
You correctly answered: unfused tetanus develops.
2 How does the trace at 130 stimuli/sec compare with the trace at 50 stimuli/sec?
You correctly answered: Fused tetanus develops at this greater stimulus frequency.
3 How do the traces with 146-150 stimuli per second compare with the trace at 130 stimuli per second?
You correctly answered: Maximal tetanic tension develops with these very high stimulation
frequencies.
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex2/act4/ 1/6
, 26-5-2021 PhysioEx Exercise 2 Activity 4
Experiment Data
Voltage (v) Length (mm) Stimuli/sec Act. Force Pass. Force Total Force
8.5 75 50 5.12 0 5.12
8.5 75 130 5.88 0 5.88
8.5 75 140 5.91 0 5.91
8.5 75 142 5.92 0 5.92
8.5 75 144 5.94 0 5.94
8.5 75 146 5.95 0 5.95
8.5 75 148 5.95 0 5.95
8.5 75 150 5.95 0 5.95
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex2/act4/ 2/6
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MaximGh. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.40. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79751 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now