Cartilage is found in the nose, ear, trachea, and larynx. It smoothens bone surfaces at joints and provides flexible support in these areas.
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The solid matrix in cartilage is composed of proteins and sugars. The cells in cartilage are widely spaced.
Tendons connect muscles to bones. They are fibrous tissues with great strength but limited flexibility, unlike ligaments which are very elastic.
Ligaments connect bones to each other. They are very elastic, have considerable strength, and contain very little matrix.
The hard matrix in which bone cells are embedded is composed of calcium and phosphorus compounds.