PSL300H1 Lecture Notes - Endocrine System, Fluid Compartments, Extracellular Fluid
Document Summary
The composition of both body compartments are in a dynamic steady state. Materials are constantly moving back and forth between the two comparemtns. Equilibrium implies that the composition of body compareemtns is identical i. e. Ecf and icf exist in a state of disequilibrium. Human body monitors certain functions such as blood pressure and blood glucose concentrations. Regulated variables are kept within their acceptable range by physiological mechanisms. All control systems have 3 components: an input signal, a controller or integrating center, an output signal. Simplest form of control that is restricted to the tissue or cell involved. Nearby groups of cells respond by releasing a chemical. Stimulus sensor input signal integrating center output signal target response in mammals, integrating centers are usually part of the nervous system or endocrine system. Output signals may be chemical or electrical refer to page 195 refer to slide printout. Where the response feeds back to influence the input portion of the pathway.
