Abstract

A REVIEW ON SYSTEMIC SENILE CHANGES IN HUMAN BODY

Alka Jayavanth Kumar*, Shelly Divyadarshan, Chaitra S.

ABSTRACT

Physiological changes occur with aging in all organ systems. Lean body mass declines with age and this is primarily due to loss and atrophy of muscle cells. Degenerative changes occur in many joints and this, combined with the loss of muscle mass, interfere with locomotion. Progressive elevation of blood glucose occurs with age on a multifactorial basis and osteoporosis is frequently seen due to a linear decline in bone mass after the fourth decade. The epidermis of the skin atrophies with age and due to changes in collagen and elastin the skin loses its tone and elasticity. The cardiac output decreases, blood pressure increases and arteriosclerosis develops. The lungs show impaired gas exchange, a decrease in vital capacity and slower expiratory flow rates. Functional changes, largely related to altered motility patterns, occur in the gastrointestinal system. These changes with age have important practical implications for the clinical management of elderly patients: metabolism is altered, changes in response to commonly used drugs make different drug dosages necessary and there is need for rational preventive programs of diet and exercise in an effort to delay or reverse some of these changes. Normal aging affects all physiological processes. Subtle irreversible changes in the function of most organs can be shown to occur by the third and fourth decades of life, with progressive deterioration.

Keywords: Age, System, Decrease.