Benchmark 6C
The Human Organism: Basic Functions
Grades K-2, page 136

The human body has parts that help it seek, find, and take in food when it feels hunger--eyes and noses for detecting food, legs to get to it, arms to carry it away, and a mouth to eat it.

NSES Content Standard C 
Life Science: The characteristics of organisms
Grades K-4, page 129
Each plant or animal has different structures that serve different functions in growth, survival, and reproduction. For example, humans have distinct body structures for walking, holding, seeing, and talking.