Dense Connective Tissue

Dense connective tissue consists of many closely packed, thick, collagenous fibers, a fine network of elastic fibers, and a few cells, most of which are fibroblasts. Subclasses of this tissue are regular or irregular, according to how organized the fiber patterns are.

Collagenous fibers of regular dense connective tissue are very strong, enabling the tissue to withstand pulling forces (fig. 5.21). It often binds body parts together, as parts of tendons and ligaments. The blood supply to regular dense connective tissue is poor, slowing tissue repair. This is why a sprain, which damages tissues surrounding a joint, may take considerable time to heal.

Fibers of irregular dense connective tissue are thicker, interwoven, and more randomly organized. This allows the tissue to sustain tension exerted from many different directions. Irregular dense connective tissue is found in the dermis, the inner skin layer.

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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