The frank-starling mechanism is a compensatory response to heart failure that can support cardiac output but also worsen heart failure. which statements regarding this mechanism are correct? select all that apply.

• Decrease in cardiac output causes an increase in preload. 
• Diuretics reduce blood volume and myocardial oxygen demand. 
• Excessive stretch on the ventricular wall will decrease preload.

Frank-starling mechanism showing the relation of the end diastolic pressure (EDP) and the contraction power(calculated by stroke volume).

In heart failure, failure to pump the blood(decrease in cardiac output) will increase the preload/EDP. The diuretic can decrease blood volume which will reduce the amount of blood the heart has to pump. Stretching of muscle will decrease the EDP and decrease the preload as well.

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.