Loose fibrous connective tissue
Connective tissue function
That dull ache in the wrist that you ignored through the summer is now an unbearable pain. These cells are arranged in a stratified layer, but they have the capability of appearing to pile up on top of each other in a relaxed, empty bladder. As a consequence, it displays greater resistance to stretching. Adipocytes have small nuclei localized at the cell edge and store fat for energy usage. Fibers[ edit ] Loose connective tissue is named based on the "weave" and type of its constituent fibers. Persons whose jobs and hobbies involve performing the same movements over and over again are often at the greatest risk of tendinitis. Blood Blood is considered a connective tissue because it has a matrix, as shown in Figure 6. Neutrophils are phagocytic cells that participate in one of the early lines of defense against microbial invaders, aiding in the removal of bacteria that has entered the body. Those fibers are mostly made up of collagen as well as some fibroblasts. In regular dense connective tissue, the fibers are arranged in parallel bundles, and are often white or yellow colored. Osteoblasts are active in making bone for growth and remodeling. One of the types, fibrous connective tissue, is especially strong. It may likewise be present in the mediastinal extremities.
Fibrocartilage is the strongest of the connective tissues; it is found in regions of the body that experience large amounts of stress and require a high degree of shock absorption, such as between the vertebrae.
They exist in one layer, but the arrangement of nuclei at different levels makes it appear that there is more than one layer.
There are three types of cells in bone: osteoblasts, osteocytes, and osteoclasts.
Cartilage Cartilage is a connective tissue. The chondrocytes exist in cavities in the matrix called lacunae. In contrast, white fat adipocytes store lipids as a single large drop and are metabolically less active. Erythrocytes are consistently the same size in a species, but vary in size between species.
Erythrocytes red blood cellsthe predominant cell type, are involved in the transport of oxygen and carbon dioxide.
Adipose connective tissue
These combine to form a proteoglycan with a protein core and polysaccharide branches. The mesenchymal cell is a multipotent adult stem cell. The cell found in greatest abundance in blood is the erythrocyte. 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. Skeletal Muscle Skeletal muscle has striations across its cells caused by the arrangement of the contractile proteins, actin and myosin, that run throughout the muscle fiber. The chondrocytes exist in cavities in the matrix called lacunae. In other words, the tissue transitions from thick to thin. The skeletons of sharks and human embryos are composed of cartilage. The functional unit of compact bone is the osteon, which is made up of concentric rings of bone called lamellae surrounding a central opening called a Haversian canal, through which nerves and blood vessels travel. Connective Tissues: Bone, Adipose, and Blood Bone, adipose fat tissue, and blood are different types of connective tissue that are composed of cells surrounded by a matrix. Hyaline cartilage is also found at the ends of long bones, reducing friction and cushioning the articulations of these bones. Many adjacent epithelial tissues which are avascular get their nutrients from the interstitial fluid of areolar tissue; the lamina propria is areolar in many body locations. Cartilage This micrograph shows hyaline cartilage, a semi-rigid connective tissue from a human trachea windpipe. Fibrocartilage contains a large amount of collagen fibers, giving the tissue tremendous strength.
Muscle Tissues There are three types of muscle in animal bodies: smooth, skeletal, and cardiac. Fibrocartilage is the strongest of the connective tissues; it is found in regions of the body that experience large amounts of stress and require a high degree of shock absorption, such as between the vertebrae.
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