BPK 205 Study Guide - Midterm Guide: Medulla Oblongata, Action Potential, Posterior Pituitary

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 205
• Professor: Yen May Cheng

Document Summary

Keep internal body relatively stable to optimize body function. Homeostasis does not equal equilibrium, it is the maintenance of a. Different [ ] of ions in icf compared to ecf. Feedback reduces the difference between the desired set-point and the. Signal to integrating center = nerve signal about decrease in. Signal to effector to initiate change = nerve signal. Sensor = baroreceptors (sense bp changes in the blood) Signal to integrating system = nerve signal about decreased bp. Signal to effector to initiate change = nerve signal and hormones. Feedback increases the difference between the normal set-point and. Stimulus = baby drops, presses on cervix. Signal effector to initiate change = oxytocin release from posterior. Effector = smooth muscles of the uterus. Initiation of a response in anticipation of the stimulus. Eg: sight, smell or thought of food can initiate salivation and digestion. All uid in the body contained within the cell membrane (cytosol)