15 Questions
What defines the boundaries of a single sarcomere?
Z line
Where are the thinner filaments (actin) located?
I band
What is the area of an A band with only thick filaments called?
H zone
What ion is present when sliding occurs and muscle contracts?
Calcium ions
What happens to the coloration of a muscle when it contracts?
All the light areas disappear
What kind of binding does an action potential cause?
Between calcium ions and actin (thin filaments)
What is the energy necessary for muscle contraction derived from?
ATP
Where is the Z line located?
Sarcomere (functional unit of myofibril)
What is the only way for muscles to move?
Contraction
What are the moving parts of muscles called?
Microfilaments
What are muscles made up of (generally)?
Strands of protein that move relative to one another
What is something necessary for muscles to move other than contraction?
Something to move against, a skeleton
What are the three different kinds of skeletons?
Hydrostatic, exoskeleton, endoskeleton
What is the functional unit of myofibril?
Sarcomere
What kind of pattern are myofibrils arranged in?
A light and dark pattern
Test your knowledge of muscle movement with this quiz! From the basics of muscle contraction to the moving parts of muscles, this quiz will challenge your understanding of how muscles work and move.
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