Concepts Of Lifetime Fitness
Beginning of paper
September 1, 1997
Homeostasis is the state of equilibrium in which the internal environment of the
human body remains relatively constant. Two excellent examples of homeostasis
are how the body maintains a constant temperature and blood pressure during
strenuous physical activity or exercise. A ....
Middle of paper
.... and relax at very high intervals. This is commonly
known as shivering. The production of Adenosine Triphosphate or ATP in the
mitochondria of the muscles produces heat. If the body temperature does not
rise immediately after this, then a second function begins. The brain will
signal the blood vessels near the skin to constrict or narrow in diameter. This
occurs so the heat deep in the muscles is conserved. Since the vessels are now
smaller in diameter, less blood is needed to fill th ....
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Word count: 658
Page count: 3 (approximately 250 words per page)
