Our muscle fiber structure flashcards are a helpful study tool for learning about the different components of muscles. Each flashcard features an English word related to muscle fiber structure on one side, with its definition on the other side. With audio pronunciation included, these flashcards make it easy to master the vocabulary associated with muscle fiber structure. Improve your knowledge with our muscle fiber structure flashcards today!
Muscle fiber structure refers to the way muscles are made up of long cells called fibers. These fibers are packed with proteins that help them contract and relax, allowing us to move our bodies. A protective sheath surrounds each muscle fiber called the endomysium, and groups of fibers are bundled together into fascicles, which are then wrapped in another layer called the perimysium. Understanding the structure of muscle fibers can help us comprehend how our bodies function and how to maintain healthy and strong muscles.
Flashcards: Muscle Fiber Structure
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quick facts
- Muscle fibers are long, cylindrical cells that make up our muscles.
- There are two main types of muscle fibers: slow-twitch and fast-twitch.
- Slow-twitch muscle fibers are better for endurance activities like running long distances.
- Fast-twitch muscle fibers are better for activities that require quick bursts of energy, like sprinting.
- Muscle fibers contain myofibrils, which are made up of proteins that allow muscles to contract and relax.
card list
| Front | Back |
|---|---|
| Sarcolemma | The outer membrane of a muscle cell. |
| Sarcoplasm | Sarcoplasm is the fluid inside a muscle cell. |
| Myofibrils | The structures in muscle fibers that help them contract. |
| Sarcoplasmic reticulum | The sarcoplasmic reticulum is a structure in muscle cells that stores and releases calcium ions during muscle contractions. |
| T-tubules | T-tubules are tiny tubes that carry signals deep into muscle cells. |