HHP 3500 Lecture Notes - Lecture 1: Autonomic Nervous System, Fluid Compartments, Blood Sugar

• School: University of Iowa
• Department: Health and Human Physiology
• Course: HHP 3500
• Professor: Peterson Clayton

Document Summary

Review of structural characteristics: physiology is the study of how living organisms function, hierarchy of structural organization (molecules cells tissues organs organ systems, interrelationships between structure and function. 4 cell/tissue types: muscle, neurons, epithelial cells, connective tissue cells: body fluid compartments: 2 compartments: intracellular fluid compartment (icf)- 2/3 of body water extracellular fluid compartment (ecf)-1/3: subdivided into plasma (3 l) and interstitial fluid(in between cells, about 28 l) Major, most abundant ions in isf: sodium, chloride, and calcium. Most in icf: potassium, protein, and inorganic phosphate. The reason for this imbalance is that the cells actively transport these ions, so there is an uneven distribution (of +/- charges), which is crucial for signaling, contraction, etc: even though there are separation/compartments, movement still occurs. Taken up by cells through insulin, or excreted through urine. Negative feedback control system: homeostatic control systems utilize feedback or feed forward control to regulate physiological variables around set point.