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Muscular System Notes 2023 part 1

Muscular System Notes 2023 part 1

Assessment

Flashcard

Science

7th - 11th Grade

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What must happen before muscle fibers can contract?

Back

Calcium ions must change the shape of actin, ATP provides energy to form cross bridges between actin and myosin, sodium ions must stimulate the release of calcium ions. All of these must happen before contraction can take place.

2.

FLASHCARD QUESTION

Front

What is the first step in muscle contraction?

Back

Acetylcholine is released and sodium enters.

3.

FLASHCARD QUESTION

Front

What type of muscle tissue is responsible for voluntary movements?

Back

Skeletal muscle.

4.

FLASHCARD QUESTION

Front

What is the thin filament that makes up muscle?

Back

Actin.

5.

FLASHCARD QUESTION

Front

What role does acetylcholine play in muscle contraction?

Back

It causes an action potential to begin in muscle fibers.

6.

FLASHCARD QUESTION

Front

What is the function of myosin in muscle contraction?

Back

Myosin forms cross bridges with actin to facilitate muscle contraction.

7.

FLASHCARD QUESTION

Front

What is the role of calcium ions in muscle contraction?

Back

Calcium ions change the shape of actin, allowing myosin to bind and contract the muscle.

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