BIOL 1020 Lecture Notes - Lecture 12: Amphibious Fish, Loose Connective Tissue, Elastin

• School: University of Guelph
• Department: Biology
• Course: BIOL 1020
• Professor: Patricia Wright

Document Summary

Epithelial tissue (epithelium): cells that cover organs and outer surfaces, as well as line hollow organs, vessel, and body cavities. Connective tissue: loosely organized and composed of cells embedded in a matrix. Many can be transplanted from tissue donors. Loose connective tissue: connects epithelia to tissues, holds organs in place, and pads skin. Collage fibers for strength and elastin fibers for stretching and fibroblast cells. Gills main respiratory organ of fish. More supportive connective tissues when out of the water (more collagen fibers) Amphibious fish can live in and out of the water. Blood: connective tissue that circulates throughout the body via blood vessels. This is true because it is embedded in a matrix. Bone: rigid connective tissue composed of branched cells called osteocytes. Reservoir of calcium and minerals if dietary levels are too low. Muscle tissue: highly specialized tissue capable of contracting. Composed of long, thin, cylindrical cells called muscle fibers. Cardiac only found in the heart, involuntary.