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Label the structure of the muscle fiber

Label the structure of the muscle fiber

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Label the structure of the muscle fiber
**Review & Practice Sheet Section A** ### Part A **Label the Structure of the Muscle Fiber:** In the image, there is a detailed diagram showcasing the anatomy of a muscle fiber. The task involves labeling various parts of the muscle fiber using the terms provided. These terms include different cellular structures critical to muscle function and contraction. **Label Options:** 1. Muscle Fiber 2. Sarcoplasmic Reticulum 3. Axon 4. Synaptic Cleft 5. Triad 6. Junctional Fold 7. T Tubule 8. Sarcolemma 9. Terminal Cisternae 10. Sarcomere 11. Synaptic Vesicle 12. Perimysium **Diagram Description:** The diagram displays a cross-section of a muscle fiber with several label boxes pointing to specific structures. Each structure plays a distinct role: - **Muscle Fiber:** The basic contractile unit. - **Sarcoplasmic Reticulum:** A network responsible for storing and releasing calcium ions. - **T Tubule:** An invagination of the sarcolemma important for propagating action potentials. - **Sarcolemma:** The cell membrane that encloses a muscle fiber. - **Terminal Cisternae:** Enlarged areas of the sarcoplasmic reticulum adjacent to the T tubules. - **Sarcomere:** The structural unit of a myofibril. - **Triad:** The structure formed by a T tubule with a terminal cisterna on each side. - **Synaptic Cleft:** The space between neurons at a nerve synapse. - **Synaptic Vesicle:** Contains neurotransmitters, which are released at the synaptic cleft. - **Perimysium:** Connective tissue enveloping a bundle of muscle fibers. - **Axon:** Conducts electrical impulses away from the neuron's cell body. - **Junctional Fold:** Folds in the sarcolemma at the neuromuscular junction to increase surface area. This detailed schematic helps in understanding how various components interact during muscle contraction and relaxation.
Transcribed Image Text:**Review & Practice Sheet Section A** ### Part A **Label the Structure of the Muscle Fiber:** In the image, there is a detailed diagram showcasing the anatomy of a muscle fiber. The task involves labeling various parts of the muscle fiber using the terms provided. These terms include different cellular structures critical to muscle function and contraction. **Label Options:** 1. Muscle Fiber 2. Sarcoplasmic Reticulum 3. Axon 4. Synaptic Cleft 5. Triad 6. Junctional Fold 7. T Tubule 8. Sarcolemma 9. Terminal Cisternae 10. Sarcomere 11. Synaptic Vesicle 12. Perimysium **Diagram Description:** The diagram displays a cross-section of a muscle fiber with several label boxes pointing to specific structures. Each structure plays a distinct role: - **Muscle Fiber:** The basic contractile unit. - **Sarcoplasmic Reticulum:** A network responsible for storing and releasing calcium ions. - **T Tubule:** An invagination of the sarcolemma important for propagating action potentials. - **Sarcolemma:** The cell membrane that encloses a muscle fiber. - **Terminal Cisternae:** Enlarged areas of the sarcoplasmic reticulum adjacent to the T tubules. - **Sarcomere:** The structural unit of a myofibril. - **Triad:** The structure formed by a T tubule with a terminal cisterna on each side. - **Synaptic Cleft:** The space between neurons at a nerve synapse. - **Synaptic Vesicle:** Contains neurotransmitters, which are released at the synaptic cleft. - **Perimysium:** Connective tissue enveloping a bundle of muscle fibers. - **Axon:** Conducts electrical impulses away from the neuron's cell body. - **Junctional Fold:** Folds in the sarcolemma at the neuromuscular junction to increase surface area. This detailed schematic helps in understanding how various components interact during muscle contraction and relaxation.
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