The graph shows the length and tension traces for a muscle mechanical test known as the slack test. The muscle is activated to isometric tension then a length step is imposed during the time interval labeled C. Which statement below describes the purpose of the slack test? a) Comparison of the isometric tension before and after the length step b) Estimate the maximum velocity of muscle shortening. c) Measure the recovery time of tension after a sudden length change d) Measure the relaxation time of tension after a sudden length change
Added by Antonio C.
Close
Step 1
This sudden change in length causes the muscle to momentarily lose tension, and then it starts to recover tension as it adapts to the new length. Now let's look at the answer choices: Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 59 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Which statement correctly explains the relationship between muscle length and its ability to generate tension? a. There is a direct relationship between the optimal length of a muscle and development of muscle tension b. There is an inverse relationship between the length of the muscle and the force it generates c. Tension develops over the entire length of the muscle in a linear fashion d. The position of the actin and myosin filaments has nothing to do with the ability of the muscle to generate maximum tension
Madhur L.
Which of the following best describes what happens to the force of the skeletal muscle contraction when stimulation frequency is increased? a. As stimulation frequency increases, the force of muscle contraction remains constant because action potentials are all-or-none. b. As stimulation frequency increases, the force of muscle contraction increases in a linear fashion, because the intensity of a signal is communicated via action potential frequency. c. As stimulation frequency increases, the force of muscle contraction levels off at the height of an individual muscle twitch, because the muscle is not able to relax between stimuli. d. As stimulation frequency increases, the peak tension becomes larger than the force of an individual muscle twitch because twitch peaks become additive as they start to overlap.
Suman K.
A string of length $L$, which is clamped at both ends and has a tension $T$, is pulled aside a distance $h$ at its center and released. (a) What is the energy of the subsequent oscillations? (b) How often will the shape shown in the figure reappear? (Assume that the tension remains unchanged by the small increase of length caused by the transverse displacements.) [Hint: In part (a), consider the work done against the tension in giving the string its initial deformation.]
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD