What are myofilaments made up of?
Muscle Anatomy Review

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Science
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11th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Myofilaments are made up of two types of proteins known as Actin and Myosin.
2.
FLASHCARD QUESTION
Front
What structure is referred to as the sarcomere?
Back
The sarcomere is the basic unit of a muscle's striated muscle tissue, consisting of myofilaments (actin and myosin) that slide past each other to produce muscle contraction.
3.
FLASHCARD QUESTION
Front
List the structures of a muscle from smallest to largest.
Back
The structures of a muscle from smallest to largest are: myofilaments, myofibril, muscle fiber, fascicle, muscle.
4.
FLASHCARD QUESTION
Front
How many sarcomeres are typically found in a muscle fiber?
Back
The number of sarcomeres in a muscle fiber can vary, but in the context of the question, there are 5 sarcomeres shown.
5.
FLASHCARD QUESTION
Front
What is a fascicle in muscle anatomy?
Back
A fascicle is a bundle of muscle fibers surrounded by perimysium, which is a type of connective tissue.
6.
FLASHCARD QUESTION
Front
What is the role of Actin in muscle contraction?
Back
Actin is a thin filament that interacts with myosin to facilitate muscle contraction.
7.
FLASHCARD QUESTION
Front
What is the role of Myosin in muscle contraction?
Back
Myosin is a thick filament that binds to actin and pulls it to shorten the muscle during contraction.
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