Unit 1 B- Factors Affecting Human Growth and Development Flashcards
What is meant by nature?
genetic inheritance and other biological factors
What is meant by nurture?
the influence of external factors after conception such as social and environmental factors
Name the 3 theories which relate to nature and nurture
- Gesell’s maturation theory (nature)
- Bandura social learning theory (nature)
- Stress-diathesis model (nurture and nature)
Explain Gesell’s maturation theory
- he researched children’s development
- his findings were used to establish norms and milestones and development was predetermined and the environment had little influence.
- if there was problems with a child’s development it was heredity.
Explain Bandura’s social learning theory
- suggests that people learn through observation of others and by imitating their behaviour
- he based his experiment on aggressive behaviour of children demonstrated on a doll after watching a role model be aggressive.
What are the 4 stages of Bandura’s social learning theory?
1 - child notices someone else’s behaviour
2 - child internalises the action by remembering the behaviour
3 - might not copy it straight away but will reproduce the behaviour when the situation occurs
4 - depending on the outcome (positive or negative reinforcement) children will either repeat behaviour or stop
Explain the stress-diathesis model?
- helps explain how stress is caused by life events can interact with a person genetic vulnerability to impact their mental wellbeing.
- some people are born with biological or genetic predisposition to a psychological disorder, which might not develop if they don’t experience in their life
What is genetic predisposition?
inherited genes that determine physical growth and development, health and appearance
What are the 8 conditions which can be caused by genetic predispositions?
- cystic fibrosis
- brittle bone disease
- phenylketonuria (PKU)
- huntington’s disease
- klinefelter syndrome
- down’s syndrome
- colour blindness
- duchenne muscular dystrophy
Explain cystic fibrosis
- caused by a faulty gene
- results in a defective protein being produced that causes the lungs to become clogged with thick mucus. This causes problems with absorbing nourishment from food and they might suffer with respiratory and chest infections.
What treatments are there to helps cystic fibrosis?
- physiotherapy which clears the mucus from lungs
- various drugs - help control breathing and throat and lung infections
Explain brittle bone disease
- can be passed on by parents or developed from genetic mutation.
- high risk of fracturing or breaking bones easily, this is because their bones don’t develop with right amount of protein
What treatments are there to help brittle bone disease?
physiotherapy
assistive equipment
drug treatments - which strengthen bones
Explain phenylketonuria (PKU)
genetic disorder that prevents child from breaking down phenylalanine, an amino acid found in foods
- causes a build-up of harmful substances in the body which damages brain development.
- can’t be cured
- untreated PKU leads to severe learning disabilities and death
What are the treatments for phenylketonuria (PKU)?
babies are screened by heel-prick blood test. If high levels of phenylalanine, treatment will start e.g special diet and medication to prevent build-up
Explain huntington’s disease
- develops between 35-55 years old
- is an inherited genetic disorder
- causes progressive damage to nerve cells in brain
- affects muscle coordination and decline in mental health and behavioural changes.
Explain klinefelter syndrome
- occurs in boys with XXY
- baby is slow to reach milestones, born with undescended testicles, poor muscle power etc.
- most people can live with the condition
Explain down’s syndrome
- genetic disorder which results from an extra chromosome
- causes learning disabilities, different physical features and associated medical issues
- lowers life expectancy
Explain colour blindness
- where someone does not have a colour perception
- genetic
- does not lead to long-term health problems
Explain duchenne muscular dustrophy
- caused by genetic mutations on the X chromosome
- prevents body from producing a vital muscle protein, dystrophin, which is essential for building and repairing muscles
- severely disabling
- survival over the age of 30 is rare
What is cancer?
is a cell disease
What does cancer cause?
results in cells becoming abnormal and dividing
What can cause cancer?
environment and lifestyle factors e.g smoking
faulty gene
What is diabetes?
common chronic condition
What are the factors which increase the risk of getting diabetes?
inherited (type 1)
type 2 environment and lifestyle
What causes high blood cholesterol?
lifestyle factors - unhealthy diet, smoking, lack of exercise
inherited - from family
What is cholesterol ?
is a fatty substance that is carried around the body by proteins.
What can high cholesterol cause?
heart disease and other cardiovascular diseases
What are the biological factors that affect development related to ?
the environment inside a mother’s womb e.g smoking or drinking
What are some examples of what biological factors could cause?
foetal alcohol syndrome
maternal infections during pregnancy
lifestyle/ diet during pregnancy
congenital defects
What is the foetal alcohol syndrome?
- have development and physical defects which have life long effects
- tend to be smaller and smaller heads than normal caused by poor brain development.
- may also heart defects, learning difficulties and neurological problems
What is maternal infections during pregnancy?
- if pregnant women is exposed to infections such as rubella the foetus may be affected
- rubella can cause impaired hearing or eyesight
What is lifestyle/ diet during pregnancy?
- babies are affected by what their mothers eat
- malnutrition or a lack of healthy food may lead in a lifetime of poor health for the child
What are congenital defects?
- defects that are present at birth
- most usually heart defects or down syndrome
What are some examples of environmental factors that affect development?
exposure to pollution
poor housing conditions
access to health and social care services
What does exposure to pollution cause?
respiratory problems
cardiovascular problems
allergies
How can respiratory problems be caused by exposure to pollution ?
- tobacco smoke, combustion products and air pollution are associated with various toxins and pollutants
- these substances affect nerves and muscles used for breathing and has a bad effect of lining of the air passages
- examples are runny nose or sore throat, pneumonia and lung cancer
How can cardiovascular problems be caused by exposure to pollution ?
- factors are smoking tobacco and air pollution
- smoking causes changes in the lining of the heart and blood vessels causing clots, which may lead to heart attacks
- exposure to other chemicals that cause air pollution can increase the risk of thrombosis and raised blood pressure
How can allergies be caused by exposure to pollution ?
- caused by irritants such as dust or pollen causing the immune system to overreact.
- examples are hay fever and asthma
- hay fever causes sneezing, watery eyes and runny nose
- asthma can cause asthma attacks which causes difficulty breathing as airways become inflamed and constricted
What can poor housing conditions cause?
respiratory problems
cardiovascular problems
hypothermia
anxiety and depression
How can respiratory problems be caused by poor housing conditions?
overcrowded housing, lack of heating and poor ventilation causing damp and mould can lead to respiratory problems.