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Illustration shows thick collagen fibers and thin elastin fibers loosely woven together in an irregular network. Oval fibroblasts are interspersed among the fibers.
Loose connective tissue is composed of loosely woven collagen and elastic fibers. The fibers and other components of the connective tissue matrix are secreted by fibroblasts.

Fibrous connective tissue

Fibrous connective tissues contain large amounts of collagen fibers and few cells or matrix material. The fibers can be arranged irregularly or regularly with the strands lined up in parallel. Irregularly arranged fibrous connective tissues are found in areas of the body where stress occurs from all directions, such as the dermis of the skin. Regular fibrous connective tissue, shown in [link] , is found in tendons (which connect muscles to bones) and ligaments (which connect bones to bones).

Illustration shows parallel collagen fibers woven tightly together. Interspersed among the collagen fibers are long, thin fibroblasts.
Fibrous connective tissue from the tendon has strands of collagen fibers lined up in parallel.


Cartilage is a connective tissue with a large amount of the matrix and variable amounts of fibers. The cells, called chondrocytes , make the matrix and fibers of the tissue. Chondrocytes are found in spaces within the tissue called lacunae .

A cartilage with few collagen and elastic fibers is hyaline cartilage, illustrated in [link] . The lacunae are randomly scattered throughout the tissue and the matrix takes on a milky or scrubbed appearance with routine histological stains. Sharks have cartilaginous skeletons, as does nearly the entire human skeleton during a specific pre-birth developmental stage. A remnant of this cartilage persists in the outer portion of the human nose. Hyaline cartilage is also found at the ends of long bones, reducing friction and cushioning the articulations of these bones.

Illustration shows pairs of chondrocytes embedded in a matrix. The parts of the cells that face one another are flat, and the outer surfaces are rounded. Each cell has a small, rounded nucleus.
Hyaline cartilage consists of a matrix with cells called chondrocytes embedded in it. The chondrocytes exist in cavities in the matrix called lacunae.

Elastic cartilage has a large amount of elastic fibers, giving it tremendous flexibility. The ears of most vertebrate animals contain this cartilage as do portions of the larynx, or voice box. Fibrocartilage contains a large amount of collagen fibers, giving the tissue tremendous strength. Fibrocartilage comprises the intervertebral discs in vertebrate animals. Hyaline cartilage found in movable joints such as the knee and shoulder becomes damaged as a result of age or trauma. Damaged hyaline cartilage is replaced by fibrocartilage and results in the joints becoming “stiff.”


Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts—mostly calcium salts—that give the tissue hardness. Without adequate organic material in the matrix, the tissue breaks; without adequate inorganic material in the matrix, the tissue bends.

There are three types of cells in bone: osteoblasts, osteocytes, and osteoclasts. Osteoblasts are active in making bone for growth and remodeling. Osteoblasts deposit bone material into the matrix and, after the matrix surrounds them, they continue to live, but in a reduced metabolic state as osteocytes. Osteocytes are found in lacunae of the bone. Osteoclasts are active in breaking down bone for bone remodeling, and they provide access to calcium stored in tissues. Osteoclasts are usually found on the surface of the tissue.

Questions & Answers

what are runners
Godfrey Reply
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Bwambale Reply
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Simon Reply
diagrams for what?
A vaccination is a treatment which makes the body stronger against an infection. The body fights infections using the immune system, which is made up of millions upon millions of cells including T cells and B cells.
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Sunday Reply
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REAL Reply
Photosynthesis is the process that plants use to convert light into food. During this process, plants create carbohydrates starting with only carbon dioxide and water. Sunlight provides the energy that makes photosynthesis possible.
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Adeyemo Reply
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zoology branch of biology that study animals
a branch of biology which deals with the study of animals
A plant is a living thing that grows in the earth and has a stem, leaves, and roots
Bello Reply
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dalitso Reply
A plant is a living thing that grows in the earth and has a stem, leaves, and roots
a plant is an is a living thing that is classified under autothrops because it makes its own food through the process of photosynthesis .
a plant is also known as autotropic category and a plant have root & stem
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Odion Reply
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Godfred Reply
Living structures
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the diagram below show how the blood of a human embryo flows close to the mothers blood in the placenta . which substances are represent at x in higher concentrations than at y
Joyce Reply
what is ecology
Odion Reply
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what is cell
Is the basic unit of life
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if you want to know more, please start studying biology from the beginning systematically
enzymes are biological catalyst that speed up d rate biochemical reactions
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Awal Reply
What are tissues
A cell is the smallest unit of living organisms.
Tissues are group of similar cells performing a particular function.
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siva Reply
Cyano then bacteria. look that "cyano" is just like "ciyano".

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