Muscle Contraction Webquest 71n

Name: _________________________ Hour: ___ Date: ____________

Muscle Contraction WebQuest Introduction Welcome: Skeletal Muscle Contraction-Spinach Connection Description: Learn the anatomy and physiology of a muscle contraction using animations. Project-based assessment concludes the WebQuest. Grade Level: 9-12 Curriculum: Anatomy Task 1: Review of muscle contraction concepts. Watch the following animations in order and then answer the questions that follow. Neuromuscular junction 1. What causes voltage-gated calcium ion channels to open? 2. Calcium moving into the neuron causes vesicles to release a neurotransmitter. What’s the name of this neurotransmitter? 3. What is the name of the enzyme that breaks down Ach? Action Potentials and Muscle Contractions 4. Explain what you think a neuromuscular junction is.

5. What is the name of the protein that covers up the myosin binding sites on actin? 6. Create an analogy that describes the role of troponin & tropomyosin.

7. How would you describe a cross-bridge?

Breakdown of ATP and Cross-Bridge Movement during Muscle Contraction Muscular System, Sliding Filament Theory 1 8. What is the connective tissue that connects muscle to bone called? 9. What is the connective tissue that separates bundles of muscle fibers? 10.

What is the connective tissue that separates individual muscle fibers?

Muscular System, Sliding Filament Theory 2 11. Why do you think the mechanism of muscle contraction is referred to as the “Sliding Filament Theory”?

12.

Do muscles get longer or shorter when they contract?

Task 2: Summary animation with self-quizzes. Watch the following animation and answer the three questions below by completing the quiz part of the tutorial. Muscle Contraction Summary & Quiz 13.

The sliding filament theory states that, during muscle contraction and relaxation, a. Actin & myosin filaments shorten, then lengthen b. Actin & myosin filaments change positions relative to one another c. Troponin & Tropomyosin slide past one another 14. During muscle contraction, calcium ions bind to a. Troponin b. Tropomyosin c. Actin d. Myosin 15. After a myosin head has performed a power stroke, it must first bind to ________ in order to perform another power stroke. a. Actin b. Troponin c. Tropomyosin d. ATP Task 3-Popeye’s muscle contraction-spinach connection

http://www.nydailynews.com/life-style/health/popeyespinach-stronger-study-shows-article-1.1102606 Watch the following cartoon excerpt

http://www.menshealth.com/mhlists/nutritious_foods_for_a_healthy_body/bone_builder_spinach.php?page=1

Popeye Cartoon -theme song Using your knowledge of muscles and how they work, explain in 250 words or less the reason for Popeye's obsession with spinach. This should be typed using 12 pt Arial font, double-spaced, printed and stapled to your WebQuest questions which will be turned in with your presentation. Task 4: Project/Evaluation In this WebQuest project, you will choose one of the following projects to complete. Option 1: (1 to 2 in a group) Construct a working model to demonstrate the sliding filament theory and be able to identify the parts and demonstrate your model to the class without notes or cue cards. Option 2: (3-5 in a group) As a group, act out a play demonstrating what happens at the neuromuscular junction. Include up to the creation of an action potential that initiates muscle contraction. You may use props and costumes but no notes or cue cards. Option 3: (1-2 in a group) Write a graphic novel (comic book) with the target audience being students in grades 5-8. Explain how the muscles are put together and how they work. Make sure to include illustrations with your story. Option 4: (1-2 in a group) Create a poster, Prezi, PowerPoint, or some other presentation that shows the steps of muscle contraction. You will be presenting this information to the class without notes or cue cards.

Criteria

6

4

2

0

Task

All areas of the task were addressed and handled with a high degree of sophistication. The plan followed by the team demonstrated a great deal of thought.

At least one area of the task was not addressed. The plan followed by the team demonstrated a great deal of thought.

At least two areas of the task were not addressed. The plan followed by the team demonstrated a moderate level of thought.

The task is incomplete and/or it is apparent that little effort went into the development of the task.

Process: Teamwork

It is evident that a mutual The team worked well The team had effort and cohesive unit together, but could problems working created the final product. have utilized each together. Little other's skills to a collaboration better degree. occurred.

The final product is not the result of a collaborative effort. The group showed no evidence of collaboration.

Process: Originality

The ideas expressed by The ideas expressed the body of work by the body of work demonstrate a high degree are mostly original. of originality. The group may have improved upon a previous idea.

There were no original ideas expressed in this project.

Grammar: The final body of work Format/Spelling was free of grammar, spelling, and formatting

The final body of work had 1 error related to either

The ideas expressed by the body of work demonstrate a low degree of originality.

The final body of The final body of work had 3-5 work had major grammar, spelling, and grammar, spelling,

errors.

grammar, spelling, formatting errors. and formatting errors.

and formatting errors. Total-----→