252 Midterm Exam 2023 / BIOS252 Midterm Exam (Review and Essay Question Answer) Anatomy and Physiology II with Lab: Chamberlain College of Nursing • “Cutting things up.” Structure of the body and how the parts relate to each other in space. Physiology • “Study of nature.” Function of a living organism, how it works, and maintains life. Levels of organization (molecular, cellular, tissue level, etc.) • Chemical/molecular level: atoms and molecules • Cellular level: cells – basic structural unit of life, smallest living unit • Tissue level: tissues are groups of cells that work together to perform a particular function • Organ Level: organ is a collection of tissues • Organ System:several levels • Organism level: the human body Homeostasis(give examples, thermoregulation, water regulation, blood pressure regulation) • Condition of equilibrium in the body’sinternal environment, and maintained by regulatory processes. • Survival of our body cells is dependent on the precise regulation of the chemical composition of theirsurrounding fluid o Fluid known as extracellular fluid, and fluid that fills narrow spaces between cells is interstitial fluid. ▪ Other types are blood plasma, lymph, cerebrospinal fluid, synovial fluid, aqueous humor, and vitreous body. • Internal conditions are in a dynamic equilibrium; set point (like thermostat in house)