The meninges are the tissues that cover and protect the brain and spinal cord. The meninges have the pia mater that is close to the brain, the spider web-like middle layer is called arachnoid mater, and the outermost and toughest layer is called the dura mater. It acts like a cushion for the brain, it sends nutrients to the brain and removes toxins from the brain.
Physical fitness is the ability of an individual to perform day to day activities without fatigue. It involves several aspects, including cardiovascular ability, muscular strength, and flexibility. Proper diet and sleep can help someone attain physical fitness, and physical fitness improves overall physical health.
By checking your pulse and seeing if you heart rate is in the target heart rate zone.
<span>The control center interprets the data and
decides what action is necessary.
The effector causes an action that returns the
body to stable conditions.
A sensor monitors the body’s condition.
Sequence
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