BIOM 3200 Study Guide - Comprehensive Midterm Guide: Growth Hormone–Releasing Hormone, Thyroid, G Protein–Coupled Receptor

• School: University of Guelph
• Department: Biomedical Sciences
• Course: BIOM 3200
• Professor: Tami Martino

Document Summary

How your body knows where to send the signals. Internal environment stays constant despite the environment it is placed in: provides stable conditions for body cells. Walter cannon: coi(cid:374)ed the ter(cid:373) (cid:862)ho(cid:373)eostasis(cid:863, (cid:862)ho(cid:373)eo(cid:863) = u(cid:374)cha(cid:374)gi(cid:374)g (cid:894)u(cid:374)true, (cid:449)e do fluctuate arou(cid:374)d a (cid:373)ea(cid:374)(cid:895, (cid:862) tasis(cid:863) = static (cid:894)u(cid:374)true, (cid:449)e do fluctuate arou(cid:374)d a (cid:373)ea(cid:374)(cid:895) Sensor (constant monitoring) takes this signal and sends it to the integrating center. The integrating center (coordinate) sends a signal to an effector (response) which will bring the body temperature back down. Vice versa for a lowering of body temperature. Homeostasis is always a negative feedback loop (except during reproduction/birth: corrects around a set point and then shuts off. The reaction (increase in temperature) amplifies the response (acts to increase temperature further) Happens during ovulation where there is an lh surge which causes the release of an egg in females: estrogen brings down lh levels after ovulation (negative feedback)