A student looked at the results and concluded that a decrease in PH does cause a decrease in the force of muscle contraction.Use figure 3 to evaluate this conclusion. Scientists investigated the effect of a decrease in pH on muscle contraction. Thescientists did the investigation with four different preparations of isolated muscletissue: A, B, C and D.A- mouse muscle fibres at typical pH of mouse muscle tissue (control 1).B- mouse muscle fibres at 0.5 pH units below typical pH.C - rabbit muscle fibres at typical pH of rabbit muscle tissue (control 2).D- rabbit muscle fibres at 0.5pH units below typical pH.They measured the force of muscle contraction of the muscle fibres at 12 °C, 22 °Cand 32 °CFigure 3 shows the results the scientists obtained for B and D compared with theappropriate control.Figure 3120KeyMousemuscle fibres100O Rabbitmuscle fibresForce ofmusclecontraction/percentage ofappropriatecontrol80604010203040Termperature/C

The muscle movement is an energy (ATP) driven chemical mechanism which involves rapid contraction…

Answered: A student looked at the results and…

A student looked at the results and concluded that a decrease in PH does cause a decrease in the force of muscle contraction. Use figure 3 to evaluate this conclusion.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter8: Muscle Physiology

Section: Chapter Questions

Problem 2TAHL

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Concept explainers

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.

Question

A student looked at the results and concluded that a decrease in PH does cause a decrease in the force of muscle contraction. Use figure 3 to evaluate this conclusion.

Scientists investigated the effect of a decrease in pH on muscle contraction. The
scientists did the investigation with four different preparations of isolated muscle
tissue: A, B, C and D.
A- mouse muscle fibres at typical pH of mouse muscle tissue (control 1).
B- mouse muscle fibres at 0.5 pH units below typical pH.
C - rabbit muscle fibres at typical pH of rabbit muscle tissue (control 2).
D- rabbit muscle fibres at 0.5pH units below typical pH.
They measured the force of muscle contraction of the muscle fibres at 12 °C, 22 °C
and 32 °C
Figure 3 shows the results the scientists obtained for B and D compared with the
appropriate control.
Figure 3
120
Key
Mouse
muscle fibres
100
O Rabbit
muscle fibres
Force of
muscle
contraction/
percentage of
appropriate
control
80
60
40
10
20
30
40
Termperature/C

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