Unit 1: Learning Aim C Flashcards
What is atherosclerosis?
Caused by a blockage from fatty deposits.
Restricts the artery and stops oxygen from getting to the heart cells and muscles.
This restricts respiration and the function of the heart because it has less energy.
Meaning that it can’t pump blood to the cells and tissue, which causes cell death.
What is the name given to nervous cells?
Neurons.
What is the function of nerve cells?
Transmit impulses relaying signals.
What is the function of the fatty sheath?
Insulation to allow the impulses to travel faster.
What are the 2 main parts of the nervous system?
Central nervous system (CNS)
Peripheral nervous system (PNS)
What makes up the peripheral nervous system?
Motory and sensory.
What is the synapse?
A gap between 2 neurons.
What is a drug that affects the synapse?
Dopamine.
It blocks the receptors.
What are 4 changes in the heart with ageing?
- Heart may increase in size, causing the heart wall to thicken, making it more difficult for the heart muscles to relax and fill out with blood between beats.
- Artery walls narrow due to clogging by fats called cholesterol, preventing blood from passing easily.
- Pacemaker cells decrease, causing problems in the rhythm in the heart.
- The valves inside the heart that control the flow of blood thicken and become stiffer.
What are negative effects of cardiovascular disease in later life?
Loss of independence. Anxiety about health. depression. Anger. Frustration. Reduced mobility. Loss of opportunity to develop new friends.
What are positive effects of cardiovascular disease in later life?
Closer relationships with family members and friends.
Choosing to improve lifestyle.
What does the degeneration of nervous tissue cause?
Increase in time taken to react. Reduction in reflexes and movement. Effects on senses. Decline in verbal capability. Difficulty in receiving and processing information. Decline in short term memory.
What are the 4 senses that are affected by age?
- Taste.
- Touch.
- Sight.
- Hearing.
What happens to the taste sense with age?
The number of taste buds decreases, reducing the enjoyment of food –> poor diet.
Production of saliva decreases, affecting taste and enjoyment of food.
The ability to smell decreases, reducing the ability to detect dangerous odours (fumes or food that has gone off).
What can a decrease in the number of receptor cells in older age lead to?
Reduced sensitivity to temperature, which can lead to burns, frostbite and hypothermia.
Reduced sensitivity to injury –> untreated pressure on sores and ulcers.
Increased sensitivity to touch –> bruising.
Skin becoming more sensitive –> sunburn or skin cancer.
What happens to sight with age?
Vision becomes less sharp.
Cataracts may develop –> cloudiness in vision.
The vitreous (gel-like substance) in the eye starts to shrink –> floaters.
Peripheral vision deteriorates.
Eye muscles become weaker, reducing the field of vision.
Pupils react more slowly in bright light or darkness.
Increased risk of age-related macular degeneration (AMD) –> gradual loss of sight.
What happens to hearing with age?
Fluid-filled tubes in the inner ear, which help to maintain balance, become affected –> dizziness and falls.
Ability to hear high frequency sounds deteriorates.
Distinguishing between sounds is more difficult.
Tinnitus (persistent noise) is experienced because of build up of wax or damage to the ear.
What are the physical effects of osteoarthritis?
Swelling and pain in joints.
Damage to the soft tissue around joints.
Difficulty in walking.
Difficulty in climbing stairs.
What increases the risk of osteoarthritis?
Being female. Genetic inheritance. Injury to joints. Being over 40 years old. Joint abnormality. Obesity.
What are some effects of early stage Alzheimer’s?
Decline in short term memory.
Difficulty completing routine tasks.
Impairment in thinking/ problem solving.
What are some effects of later stage Alzheimer’s?
Language impairment. Lack of judgement. Emotional outbursts. Changes in behaviour. Agitation.
What are some effects of the final stage of Alzheimer’s?
Unable to recognise family members. Unable to feed or care for self. Lack of control of bodily functions. Almost total loss of memory. Death.
What support do patients with early stage Alzheimer’s need?
Informal help with everyday tasks.
Medication.
Counselling.
Memory clinics.