Connective tissue | Definition, Components, & Function | Britannica
2024年12月3日 · connective tissue, group of tissues in the body that maintain the form of the body and its organs and provide cohesion and internal support. The connective tissues include several types of fibrous tissue that vary only in their density and cellularity, as well as the more specialized and recognizable variants— bone , ligaments , tendons ...
Connective tissue - Ground Substance, Fibers, Cells | Britannica
2024年12月3日 · The cells of connective tissue include two types that are relatively stationary—fibroblasts and adipose cells—and several types of motile migrating cells—mast cells, macrophages, monocytes, lymphocytes, plasma cells, and eosinophils.
Connective tissue - Cartilage, Fibers, Cells | Britannica
2024年12月3日 · Connective tissue - Cartilage, Fibers, Cells: Cartilage is a form of connective tissue in which the ground substance is abundant and of a firmly gelated consistency that endows this tissue with unusual rigidity and resistance to compression. The cells of cartilage, called chondrocytes, are isolated in small lacunae within the matrix.
Tissue | Definition, Types, & Facts | Britannica
2024年11月21日 · Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material. By definition, tissues are absent from unicellular organisms. Learn more about tissues in this article.
tissue - Students | Britannica Kids | Homework Help
There are four main types of connective tissue: connective tissue proper, cartilage, bone, and blood. Connective tissue proper surrounds and cushions organs, bones, and muscles, and helps to hold them together. Tendons and ligaments are specialized forms of connective tissue proper.
Ligament | Definition, Function, Types, & Facts | Britannica
Ligament, tough fibrous band of connective tissue that serves to support the internal organs and hold bones together in proper articulation at the joints. A ligament is composed of dense bundles of collagenous fibers and spindle-shaped cells known as fibrocytes, with little ground substance.
Fascia | Description, Anatomy, Function, & Disease | Britannica
2024年12月5日 · fascia, network of connective tissue that envelops and supports the various structures and organs of the body, including the nerves, muscles, joints, tendons, and ligaments.
Connective tissue disease | Description, Types, & Symptoms
Connective tissue disease, any of the diseases that affect human connective tissue. Diseases of the connective tissue include relatively uncommon genetic disorders that affect the primary structure of connective tissue and a number of acquired maladies.
Skeleton - Connective Tissue, Muscles, Bones | Britannica
2024年12月24日 · Skeleton - Connective Tissue, Muscles, Bones: Below the ectoderm of many animals, connective tissue forms sheets of varying complexity, existing as fine membranes or as complex superficial layers of fibres.
Lymphoid tissue | Definition, Components, & Function | Britannica
2024年11月11日 · The most diffuse lymphoid tissue is found in the loose connective-tissue spaces beneath most wet epithelial membranes, such as those that line the gastrointestinal tract and the respiratory system. In these spaces many cells of the lymphatic system wander and become exposed to invading microorganisms and foreign material.