How to Activate an LG 290C. Once you get a Straight Talk phone, you have to activate it. Itâs a pretty simple to do online, but you may find it useful to see an actual example â in this case a Straight Talk LG290C.ow to Activate an LG 290C. Once you get a Straight Talk phone, you have to activate it. Itâs a pretty simple to do online, but you may find it useful to see an actual example â in this case a Straight Talk LG290C.
Best example of positive feedback is the release of oxytocin during childbirth. Oxytocin is a reproductive hormone in females. Though it is also secreted in males, its function is yet unclear.
Feedback Regulation Loops. The endocrine system plays an important role in homeostasis because hormones regulate the activity of body cells. The release of hormones into the blood is controlled by a stimulus. For example, the stimulus either causes an increase or a decrease in the amount of hormone secreted.eedback Regulation Loops. The endocrine system plays an important role in homeostasis because hormones regulate the activity of body cells. The release of hormones into the blood is controlled by a stimulus. For example, the stimulus either causes an increase or a decrease in the amount of hormone secreted.