NAME(S):_____________________________________
DUE DATE:_____________
DATE TURNED IN:____________
PROJECT: SLIDING FILAMENT MODEL OF MUSCLE CONTRACTION
You may choose a partner for this assignment or work on your own.
Build a model of a sarcomere that shows how the sliding filament theory of muscle contraction works. Refer to your textbook
and the animation links on our A&P webpage.
1) What it should show:
actin filaments (thin)
actin/myosin crossbridges
myosin heads on
myosin filaments (thick)
regulatory proteins
calcium
ATP
2) What it should do:
Your model should “contract” and “relax”, and you should be able to add & remove calcium and ATP to show their role in the
process.
Criteria:
Strong! (10 pts)
Actin
Thin
filaments
Regulatory
proteins
More than one present, materials used
are appropriate for representing the
function and relative size. Has bonding
sites for myosin heads.
More than one present, materials used
are appropriate for representing the
function and relative size.
More than one present and shown able
to bind and release with regulatory
protein
More than one present and shown able
ATP
to bind and release with myosin.
Present, materials used are appropriate
Thick
for representing the function and
Myosin
filaments
relative size, heads are clearly shown and
able to bind to actin sites.
Myosin heads can attach to sites on actin
Crossbridges
and pull them toward center of the
sarcomere.
Calcium
Key or labels
Effort
WOW factor
Rubric
Present, all parts well identified.
Clearly, a lot of “muscle” (and/or brain)
put into model.
(If you work with a partner, you must
submit a description of each person’s
contributions to the project)
Unusual use of materials &/or excellent
demonstration of function.
This rubric with name(s) accompanies
project.
Total pts: ___________________
Not too Flabby (9 pts)
Atrophied (5)
One or more present, materials
adequately show arrangement.
Not present or incorrect
arrangement
One or more present, materials
adequately show arrangement.
Not present or incorrect
arrangement
One or more in correct location.
Not present or in wrong
place.
One or more in correct location
Not present or in wrong
place.
Present, materials adequately
show arrangement.
Not present, or incorrect
arrangement
Myosin heads touch actin, but
don’t actually “pull” the
myofilaments.
Present but some items missing
or not clearly identified.
Not able to connect
myosin to actin.
Not present.
Obviously a workout, but didn’t
work up a sweat.
Appears that the ‘gluteus’
was used more than
other muscles or brain.
A nice basic model.
Obvious copy of another
model.
No rubric.