Osmoreceptors are capable of detecting water concentration and are located on the hypothalamus next to the circulatory system. The
hypothalamus (part of the brain) sends chemical messages to the pituitary
gland next to it. The pituitary gland secretes anti-diuretic hormone (ADH),
which targets the kidney responsible for maintaining water levels. When
the hormone reaches the kidney, it alters the tubules of the kidney to
become more / less permeable to water. If more water is required in the
blood stream, high concentrations of ADH make the tubules more
permeable. If less water is required in the blood stream, low concentrations
of ADH make the tubules less permeable is this
Negative Feedback or
Positive Feedback

Schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  notbe written on computer in this day and age.many schools now have a 1-to-1 computer policy, and many districts and states in the united states have mandated computers or ipads across the state for every student,  including los angeles, the second largest school district in the country.but the thing is, when they tried it in la, it wasn't the success they hoped for. that's because the tablets weren't used as much as they expected. rather, it appeared there was a gap between the digital native's love of technology and their use of it in the classroom.this conflicted relationship with computers is also underscored by much of the literature on education. it is also highlighted in professional development and conferences such as  edutech.