T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
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The trachea is a fibromuscular tube supported by incomplete rings of tracheal cartilages (SEM). These rings support the trachea while still allowing it to move and flex during breathing.
Chondrocytes (purple) - reside in cavities (known as lacunae) within the matrix (most have been fractured through their cell bodies)
Matrix (blue) - mostly type II collagen and chondroitin sulphate
Perichondrium (tan) - thin layer of connective tissue that covers the exterior surface of the cartilage
Connective Tissue (tan) - continuous with the perichondrium
Hyaline cartilage contains no blood vessels or nerves.
Other features:
Respiratory Epithelium (yellow) - its ultrastructure cannot be examined in this specimen
Red Blood Cells - several are found on the surface of this sample