me a lot of points
which body system includes involuntary movements of pumping blood and moving food through the digestive system?
integumentary system
muscular system
skeletal system
synovial joint system

Involuntary movements means that you can not control whether it does its function or not. This would include your heart. The muscular system includes these involuntary movements. The heart is a muscle and there are muscles in the digestive system that constrict to move food through our body.

This means that the answer is Muscular system.

Hope this helped!

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"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

this was from the link provided:

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.