BIOL 1050H Study Guide - Comprehensive Final Exam Guide - Connective Tissue, Capillary, Epithelium
Document Summary
Current estimates: 30-50 trillion cells in body, 200 cell types, cells specialized for different tasks, tissue: a group of similar cells and cell products working together to perform a specific role in an organ. Longitudinal, cross, and oblique sections: longitudinal section, cut on long axis, cross/transverse section, cut perpendicular to long axis, oblique section, cut on a slant between a longitudinal and cross section. Tissue classification: tissues = cells + extracellular matrix, extracellular matrix = fibers + ground substance, analogy: bricks and mortar. Four primary tissues are: epithelial, connective, nervous, muscular. Bone glossary: osteon central canal and its surrounding lamellae, osteocytes mature bone cells with lacunae, canaliculi delicate canals radiating from each lacuna to its neighbours, allowing osteocytes to contact each other. Anatomical terminology: all descriptions of anatomy are based on someone in anatomical position, anatomical position, person standing with both feet on the ground, arms at the side with palms facing forward.
