Cartilage is a connective tissue consisting of a dense matrix of collagen fibres and elastic fibres embedded in a rubbery ground substance. The matrix is produced by cells called chondroblasts, which become embedded in the matrix as chondrocytes.
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This same vessel evolves into the axillary artery in the armpit region. Its branches serve the outer surface of the chest and the upper arm. Farther down the arm, the axillary artery is known as the brachial artery. The brachial artery is the largest artery serving the shoulder and arm.