NATS 1610 Lecture Notes - Lecture 16: Compressive Stress, Pubic Symphysis, Skeleton
6 Nov 2015
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Description: has matrix as in areolar, but very sparse. Cells are closely packed: cells- adipocytes, derived from fibroblasts that enlarge to store fat. Location: beneath the skin, some in loose connective tissue, around certain organs (kidney: function: store energy, protection and insulation. Special features: unique-looking fat filled cells, fat pushes cytoplasm to inner cell periphery, nuclei at cell periphery. Cartilage: fine collagen fibres form an imperceptible network, cells- chondroblasts lie in chambers called lacunae, and produce the matrix, functions: flexible support, resists compressive stress. Special features: cells lie in lacunae, separated by solid flexible matrix. Lacks blood vessels and nerves: heal slowly. Three types: hyaline cartilage, fibres are almost invisible. Location: nose, end of most bones and ribs, larynx, trachea: embryonic skeleton, elastic, fibres are more flexible, framework of outer ear, epiglottis, fibrocartilage, matrix has strong collagen fibres. Fibres appear wispy and fine and lacunae is almost invisible: withstand pressure. Location: vertebrate disks in backbone, in knee joints pubic symphysis.
