Question

When people exercise, their body cells build up more waste quickly. Which two body systems work together to remove these wastes from their cells? (1) immune and endocrine (3) respiratory and circulatory (2) digestive and skeletal (4) circulatory and digestive

Answer 1

The correct answer is 3, RESPIRATORY AND CIRCULATORY.

The circulatory and the respiratory system work together to ensure that cells have continuous supply of fresh oxygen and that carbon dioxide, which is a waste product is removed from cells. Oxygen is very essential for the process of cellular respiration and without this process, the cells can not obtain energy, which they need to carry out life sustaining activities. Thus, the respiratory and the circulatory systems usually increase their rate of removing wastes when there is build up of wastes in the cells.

Answer 2

The correct asnwer is (3): respiratory and circulatory. The fat that we loose while exercising gets exhaled as CO2, so we need circulatory system to transport it and respiratory to exhale it.