HELP PLEASE 50 POINTS What is the correct definition of a 'calorie'?

1)a substance the body needs to function
2)a guide for making healthful daily food choices
3)a unit of heat that measures the energy available in foods
4)a process of taking in food and using it for energy, growth, and good health

Whats the difference between epinephrine and norepinephrine?

Khurshid is recovering from a heart attack. which type of rehabilitative care would she benefit from the most?

You are assessing an 86-year-old postoperative patient who has an unexpressive, stoic demeanor. when you enter the room, the patient is curled into the fetal position and your assessment reveals that his vital signs are elevated and he is diaphoretic. you ask the patient what his pain level is on a 0-to-10 scale that you explained to the patient prior to surgery. the patient indicates a pain level of “three or so.” you review your pain-management orders and find that all medications are ordered prn. how would you treat this patient's pain?