White blood cells (D) aid in the immune system to fight infections.
A dog fulfilled the three points of the cell theory through the healing of the cuts it encountered when playing.
<h3>What is a Cell?</h3>
This is defined as the simplest or basic unit of life and the three points of cell theory include:
- All organisms are made of one or more cells
- The cell is the basic unit of all organisms.
- All cells come from existing cells.
The cut the dog had healed as a result of the formation of the cells from existing cells through mitosis thereby resulting in the healing.
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Regulate body temperature is one of the functions of the integumentary system.
<h3>What is the functions of the integumentary system?</h3>
The main function of the integumentary system is that it serve as a barrier between the internal body and outside environment such as bacteria, pollution, and Ultra Violet rays from the sun. It also helps maintain body fluids, remove waste products, and regulate our body temperature which leads to homeostasis or equilibrium state in our body.
So we can conclude that regulate body temperature is one of the functions of the integumentary system.
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