INDS 111 Study Guide - Final Guide: Simple Squamous Epithelium, Mesothelium, Histology

• School: McGill University
• Department: Interndisciplinary Studies
• Course: INDS 111
• Professor: Anne Andermann

Document Summary

Top of image: flat and smooth shape, facing peritoneal cavity. One layer of simple squamous epithelium: mesothelium. Bottom of image: irregular shape, facing intestinal lumen. Note: tall and narrow simple columnar cells. Stratum germinativum/basale: stem cells: elongated nuclei with nucleoli, scanty cytoplasm. As they move upward, they further differentiate spinosum granulosum corneum. Stratum spinosum: thin intercellular spaces with spines. Stratum granulosum: squamous cells with stained keratohyalin, contains small basophilic granules. Stratum corneum: cellular boundaries no longer visible. By the end, they are dead (keratinized) and then fall off. Connective tissue cells mixed with collagen fibers, rich ecm. Two layers: papillary (pale and more cellular): loose connective tissue, note: spot the nuclei of fibrocytes amongst the bundles of collagen fibers, reticular (more fibrous): dense irregular connective tissue. Adipose tissue, dense connective tissue: cerebellum. Molecular layer: purkinje cells at junction of molecular and granular layers, dendrites of purkinje cells, cell bodies of purkinje cells: contain small bodies called nissl substance.