KP222 Study Guide - Winter 2018, Comprehensive Midterm Notes - Action Potential, Neuron, Sodium Channel
Document Summary
Fall 2018: regulated variable, set point, sensor: Hormonal signals: effectors: every regulated variable will have a set point. Thermoreceptor: skin, brain (hypothalamus) detect the change in temperature and send the signals to integrating centre. First discovered by walter cannon (1932) the wisdom of the body. Little bit of movement of variables (exercise, studying, eating) The constancy of the internal environment is the condition for a free and independent life. Components of the homeostatic system blood pressure, temperature, insulin levels, ph acid based balance, heart rate. Skin arterioles: flow of the capillaries to regulate blood flow vasodilation -> convective heat loss. Sweat glands increase sweating evaporate heat loss. Pituitary gland secretes lh acts on the ovaries (ovulation: stops the positive feedback) release estrogen in response to lh. Ovulation occurs and acts on the ovaries and lowers estrogen levels back down. List the major water components of the body and explain how water moves between them.
