Clarification Statement - S.MS.LS.1.3.CS:
Emphasis should be on the function and interactions of the major body systems (e.g. circulatory, respiratory, nervous, musculoskeletal).

Assessment Boundary - S.MS.LS.1.3.AB:
Assessment is focused on the interactions between systems not on the functions of individual systems.

Science and Engineering Practices - 6-8.SEP6.3:
Construct a scientific explanation based on valid and reliable evidence obtained from sources (including the students’ own experiments) and the assumption that theories and laws that describe the natural world operate today as they did in the past and wil

Disciplinary Core Ideas - S.MS.LS.1.3.DCI:
LS1.A: Structure and Function •In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.

Crosscutting Concepts - CC3.4:
Systems may interact with other systems; they may have sub-systems and be a part of larger complex systems.