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.
These send nerve impulses to the hypothalamus. The hypothalamus produces oxytocin which it sends to the posterior pituitary which secretes it into blood. Oxytocin hormone induces uterine contraction. These contractions stimulates further production of oxytocin which cause even further contractions.It is the only hormone the functions on positive feedback.hese send nerve impulses to the hypothalamus. The hypothalamus produces oxytocin which it sends to the posterior pituitary which secretes it into blood. Oxytocin hormone induces uterine contraction. These contractions stimulates further production of oxytocin which cause even further contractions.