BIOL373 Study Guide - Midterm Guide: Organism, Cytosol, Signal Transduction
Document Summary
Study of structure and function of a living organism and its components. Key concepts in physiology: structure & function, biological energy, information flow, homeostasis. Organizational levels of living organisms: chemical atoms & molecules, cellular- neuron & lymphocytes, tissue- collection of cells (ei. Connective: organ- structural unit of tissues (ei. Heart: organ system- integrated groups of organs, organism- individual form of life ei) ecosystem. Cells are held together by cell junctions: anchoring junctions, gap junctions, tight junctions. Extracellular matrix : synthesized and secreted by cells in the tissues. 4 major types of tissues in the body: epithelial, connective, neural, muscle, epithelial. Provides insulation & regulates material exchange any material that passes through the internal and external environment- must cross the epithelium consist of 1 or many layers of cells and connected to a basal lamina (basement membrane) Line airways and female reproductive tract (cilia) Secrete and realase products into external environment/ blood. Ei) sweat secreting in and out of body exocrine.