UNIT 1 - AGEING Flashcards
What are the changes in the heart when ageing?
1- heart may increase in size, which makes the heart wall to thicken, making it more difficult for the heart muscles to relax and will fill with blood between beats.
2- artery walls narrow due to clogging by fats called cholesterol, prevents blood from passing easily
3- pacemaker cells decrease which causes problems to the rhythm of the heart
4- valves inside the heart that control the blood become thicker and stiffer.
what can the changed of the heart due to ageing increase the likelihood of?
- angina
- hypertension (high blood pressure)
- stroke
- heart attack
- heart failure
- heart murmurs
what health factors can make heart disease worse?
- genetic inheritance
- obesity
- high blood pressure
- high blood cholesterol
- diabetes
what lifestyle factors can increase the risk of cardiovascular disease?
- smoking
- alcohol
- high salt intake/ saturated fat intake
- lack of exercise
what are the negative effects of cardiovascular disease in later life?
- loss of independence
- reduces mobility
- anxiety regarding health
- depression
- anger, frustration etc
what are the positive effects of cardiovascular disease?
- closer relationship with family members and friends
- choosing to improve lifestyle because of this
what does degeneration of the nervous tissue cause?
- decline in short term memory
- reduction in reflexes and movement
- increase in time taken to react
- decline in verbal capacity
- difficulty in receiving and processing informative
- effects on senses
what type of disease is Parkinson disease?
a degenerative disease (caused by loss of structure of neurons of the brain that control movement)
what is the average age for the onset of Parkinson disease?
60
what does the area substantia nigra do in the brain?
produces dopamine cells
explain what is Parkinson’s disease
- affects the neurons in the area of the brain called the substantia nigra
- as the neurons die the production of dopamine decreases
- dopamine sends messages to the part of the brain that controls movement and coordination
what are the physical effects of Parkinson disease?
- tremor: uncontrollable shaking beginning in the hand and arm
- mobility: slowness of movement and muscle stiffness
what are the cognitive effects of Parkinson disease?
- depression
- anxiety
- impairment in thinking and problem solving
what are senses for?
senses help individuals receive information from the environment
how does ageing affect taste?
- number of taste buds and saliva decreases, decreasing the enjoyment of food, leads to poor diet
- ability of smell decreases therefore cant smell harmful odors or food that has gone bad
how does ageing affect touch?
decrease in number of receptor cells leads to:
- reduces sensitivity to temp, could lead to hypothermia, frostbite burns etc
- reduces sensitivity to injury, can lead to untreated sores, ulcers
- increased sensitivity to touch, can increase bruising
- skin becoming more sensitive to the sun, can lead to sunburn or skin cancer
how does ageing affect sight?
- visions become less sharp, eye muscles also weaken
- cataracts develop causing cloudiness in vision
- the vitreous in the eye starts to shrink, causing floaters
- peripheral vision deteriorates
- pupils react more slowly in bright light or darkness
- increase risk in AMD, causes gradual loss of sight
what is AMD?
Age related macular degeneration
what is the vitreous in the eye?
a gel like substance
how does ageing affect hearing?
- fluid filled tubes in the ear becomes affected causing dizziness and falls, this fluid helps to maintain balance
- ability to hear high frequency sounds deteriorates
- distinguishing between sounds is more difficult
- tinnitus is experiences due to build up of wax or damage to the ear
what is tinnitus?
a persistent noise in the ear (in older people as they age)
what are some social and emotional effects of degeneration of the sens organs?
- loss of independence
- difficulty in taking part in leisure activities
- anxiety, depression, isolation, low self image
- difficulty is taking part in conversation
what are the two common physical effects on older age?
osteoarthritis and reduction in the absorption of nutrition
what is osteoarthritis?
physical effects:
- swelling and pain in joints
- damage to the soft tissue around joints
- difficulty in walking and in climbing stairs
explain how a knee joint is when affected by osteoarthritis (example)
- thinning and roughing of the joint cartilage, leaving cartilage fragments
- cony outgrow called spurs
in ageing, why is the absorption of nutrition less efficient?
- reduced production of gastric hydrochloric acid, prevents the breakdown of protein, fats and carbs
- deterioration of the digestive organs and digestive lining