Other
Bio 170 Physio Ex Exercise 2 Activity 6 Lab Report
- Course
- BIO 170
- Institution
- Farmingdale State College
Exercise 2: Skeletal Muscle Physiology Activity 6: The Skeletal Muscle Length-Tension Relationship lab report.
[Show more]
Content preview
11/2/2020 PhysioEx Exercise 2 Activity 6PhysioEx Lab Report
Exercise 2: Skeletal Muscle Physiology
Activity 6: The Skeletal Muscle Length-Tension Relationship
Name: Sarah Rodriguez
Date: 2 November 2020
Session ID: session-a6c627c0-6f65-953e-e9cf-6a845b119f41
Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly.
1 During an isometric contraction
You correctly answered: the skeletal muscle is generating force, but it remains at a fixed
length.
2 The force that results from muscles being stretched is
You correctly answered: passive force.
3 Active force
You correctly answered: is determined by the amount of myosin bound to actin.
4 When you generate the isometric length-tension curve, which of the following forces will not
be indicated on your screen?
You correctly answered: tetanic force.
5 Passive force in skeletal muscle is largely caused by
You correctly answered: the protein titin.
Experiment Results
Predict Question
1 Predict Question: As the resting length of the muscle is changed, what will happen to the
amount of total force the muscle generates during the stimulated twitch?
Your answer: Total force can increase or decrease depending upon the starting resting
length.
Stop & Think Question
i
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex2/act6/ 1/11
, 11/2/2020 PhysioEx Exercise 2 Activity 6
1 Note the dip in total force at a muscle length of 90 mm as compared to the total force at a
muscle length of 80 and 100 mm. Why does this occur?
You correctly answered: At this muscle length, active force has decreased in value and
passive force has not yet increased to a significant value.
Experiment Data
Voltage (v) Length (mm) Active Force Passive Force Total Force
8.5 75 1.82 0 1.82
8.5 70 1.75 0 1.75
8.5 65 1.55 0 1.55
8.5 60 1.21 0 1.21
8.5 55 0.73 0 0.73
8.5 50 0.11 0 0.11
8.5 80 1.75 0.02 1.77
8.5 90 1.21 0.25 1.46
8.5 100 0.11 1.75 1.86
Muscle Length = 75 mm
Active Force = 1.82
Passive Force = 0
Total Force = 1.82
Active Force
Muscle Length = 75 mm
Passive Force
Total Force Active Force = 1.82
Passive Force = 0
Total Force = 1.82
i
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex2/act6/ 2/11
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 anyiamgeorge19. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75323 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now