From simple to complex order, the four main terms referring to the body's organization are cells, tissues, organs and organ systems. Cells is the simplest component in the body of an organism, it is composed of different organelles but a cell functions as a single unit. Tissues are group of similar cells working together to perform a certain function. An organ is a distinct structure composed of two or more tissues. While an organ system are group of organs working together to meet the needs of the body. The different organs systems in the body make up the whole organism or individual.
If Max holds his breath while lifting weights, he will become dizzy and light-headed.
ADHD probably results from a combination of factors. In addition to genetics, researchers are looking at possible environmental factors. They are also studying how brain injuries, nutrition, and the social environment might contribute to ADHD.
Exercise and other Physical Activities produce endorphin a chemical that is in your brain that act like natural pain killers. It also improves the ability to sleep that reduces stress.
