Makeup Of An Individual Skeletal Muscle

The individual skeletal muscle is composed primarily of striated muscle fibers and FCT fibers.

a. Striated Muscle Fibers. There are two types of striated muscle fibers-fast (white) and slow (red).

(1) Fast (white). The fast striated muscle fibers can contract rapidly and strongly but only for a short time.

(2) Slow (red). The slow striated muscle fibers tend to contract more slowly but for a sustained duration. The red color of slow striated muscle fibers is because of myoglobin protein. This protein has the capacity to store oxygen within the sarcoplasm. Thus, oxygen is available for the production of energy during the contraction.

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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