NAS 2 Challenge Exam Study Guide latest updated

NAS 2 Challenge Exam Study Guide latest updated Levels of Organization: - ANS ️️ chemical, cellular, tissue, organ, organ system, organismal Survival Needs - ANS ️️ nutrients, oxygen, water, appropriate temperature, atmospheric pressure Requirements for Life - ANS ️️ maintaining boundaries, movement, responsiveness, digestion, metabolism, excretion, reproduction, growth Homeostasis - ANS ️️ ability to maintain relatively stable internal conditions even though the outside world changes continuously Basic Mechanisms - ANS ️️ receptor, control center, effector Negative Feedback Mechanisms - ANS ️️ most common homeostasis control mechanism; the net effect is that the original output of the system shuts off the original stimulus or reduces the intensity Positive Feedback Mechanisms - ANS ️️ cause the level of a variable to change in the same direction as the an initial change Ionic bond - ANS ️️ chemical bond between atoms formed by the transfer of electrons