Which of the following physiological changes does not occur with aging
Aging refers to the physiological changes that occur in the human body from the attainment of adulthood, and ending in death. Show
Changes Include:
Particularly vulnerable in old age to: plasma or blood loss; dehydration; potassium depletion; and metabolic acidosis. At rest, a person can maintain a constant internal environment, but capacity to react to stress. In the elderly the response to the demands of daily living (a stress)is markedly lessened owing to two key characteristics of ageing: 1. Poverty of reserve which impairs the ability to restore systemic equilibrium quickly when it is upset. 2. Breakdown in co-ordination because different organs age at different rates hence functions dependent on the performance of several systems are therefore impaired. eg Temperature intolerance is an issue eg eg undress in a gym, may consider to be too cold; use of heat or ice as treatment modalities. If a patient ‘overheats’ and is unaware of the rising temperature, you may have a fainter on your hands. Failure in the endocrine system is not a consequence of normal ageing, but as in other systems, poverty of reserves may precipitate evidence of deficiency.
Clinical disorders will include diabetes, myxoedema (severe hypothyroidism) and thyrotoxicosis (the condition caused by excessive quantities of thyroid hormones). Central autonomic dysfunction[edit | edit source]May contribute to: postural hypotension; impaired temperature control and the risk of hypothermia; loss of appreciation of visceral pain; and defective alimentary motility. The immune system has the enormous task of recognizing self from non-self.
Aging and Cardio Respiratory system[edit | edit source]Aging has a direct effect on the cardiorespiratory system. It affects the structure and function of the cardiovascular system. Gradually there occurs hypertrophy of the heart and it becomes less responsive to sympathetic stimuli due to this reason, exercise induced heart rate rise and myocardial contractility gets blunted.[3] The physiologic changes that happen due to aging are increased stiffness of the arterial system. This leads to left ventricle hypertrophy, increased after load on the left ventricle, and an increase in systolic blood pressure. All the age related changes set a stage for isolated systemic hypertension, diastolic dysfunction and heart failure.[4] Changes in the respiratory system mainly involved a decrease in chest wall compliance, respiratory muscle strength, the ventilatory response to hypoxia and hypercapnia, and the sensation of dyspnea while an increase in air trapping and alveolar dead space.[5] Research has proven that locomotion is affected as the person advances his age. The muscles, bone and joints are affected as the person ages. The force production of lower limb muscles diminishes especially the calf muscles hence in compensation the proximal muscles such as that of the hip joint have to work more. There is a so-called distal to proximal shift in the joint power in old people while walking.[6]Studies have shown reduced long extensor muscle strength and tendon stiffness in aged individuals. There are various postural changes that occur as a person advances his age. The angle of thoracic kyphosis increases with age and it results in a hyperkyphotic curve. In compensation, the forward head posture is developed. It results in impaired cervical proprioception, vestibular deficits, and increased fall risk.[7] Balance is also affected as a person ages. the sensorimotor function gets declined. The vision, cognition, strength, somatosensation and vestibular functions worsen.[8] What physiologic changes occur with aging?Physiological changes occur with aging in all organ systems. 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.
What are the physiological signs of aging?Natural changes happen in the body as we age, such as skin damage from sun exposure, loss of muscle and physical strength, loss of some sight and hearing, as well as changes to our sleep patterns, energy levels and appetite.
Which change does not occur with age quizlet?Which change does NOT occur with age? decreased compliance of the aorta.
What are the 4 factors of aging?They found people tend to fall into one of four biological aging pathways, or ageotypes: immune, kidney, liver or metabolic. Snyder said that metabolic agers, for example, may be at a higher risk for type 2 diabetes as they grow older.
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