BIOL 1030 Lecture Notes - Lecture 9: Hydrolysis, Dermis, Gastrointestinal Tract

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1030
• Professor: Kevin G.Scott

Document Summary

Polarized cells: apical surface top surface of cells facing the space, basolateral surface bottom and side of the cell. Specialized connections: gap junctions communication so cells know what they"re doing in tissue, tight junctions help maintain polarity, barriers to movement within the plasma membrane. Protection: covering us, keeping the outside, outside. Physical barrier: wall that prevents bacteria and things in the environment to get into the body. Control the movement of substances: controls absorption of nutrients, diffusion, facilitated diffusion, active transport, controls what gets absorbed and the direction of movement. Black: single red blood cell: epithelia looks like so , simple 1 layer, squamous, cells are flat and to help facilitate the movement of gases (gas exchange, blood vessels. Gastrointestinal tract: epithelia looks like so , simple columnar, absorption as a major role, protection thick epithelia from harmful bacteria, specialized cells cells have different functions. Purple line: epidermis forming a deep pit, producing a specialized structure (scales, feathers, hair)