BIOL 1051H Lecture Notes - Lecture 1: Cell Membrane, Neuropeptide, Neurotransmitter
Document Summary
What is physiology?- study of biological functions: how the body works. Pathophysiology: how physiological processes are altered in disease or injury. Anatomical variation: no two humans are exactly alike. Anatomy books show most common organization of structures. Physiological variation- sex, age, diet, weight, physical activity, ethnicity. Failure to consider variation can lead to problems (giving women medicine based off of research done on men) Reproduction- producing copies of themselves: passing genes of offspring. Homeostasis: the body"s ability to detect change and activate mechanisms that oppose the change in order to maintain relatively stable internal conditions. Sensors (receptors) in the body to detect change and send information to the. Integrating center which assesses change around a set point. The integrating center then sends instructions to an. Leads to greater change in the same direction. Feedback loop is repeated- change produces more change in the same direction. Examples include: childbirth, blood clotting, protein digestion and generation of nerve signals.
