Midterm #1 (Chapters 1,2,4,5,6,7,8) Flashcards
How many chromosomes does the human body have?
46 (23 pairs)
Tiny structures that contain genetic material are called:
Chromosomes
The first ___ pairs are called autosomes.
22
The ___ pair determines the sex of the child.
23rd
A genotype is:
- a complete set of gene’s
- a person’s heredity
- A set of genes that tell you what is what.
A phenotype is:
- Genetic instructions with environmental influences
- Individual’s physical, behavioural, and psychological features
p as in physical (genes you can see)
_______ genes are:
- expressed
- chemical instructions are followed
- Can be seen in both homo and heterozygous
Dominant
_______ genes are:
- If paired with a dominant gene, will not be expressed
- Only expressed when alleles are homozygous
Recessive
______ (identical twins)
- single fertilized egg that splits in two
- Share 100% of genes
Monozygotic
Physical features of Down Syndrome:
- head, neck, and nose are smaller
- almond shaped eyes
- hearing, vision, and other medical issues
What happens genetically when someone has down syndrome?
- Abnormal number of chromosomes
- Extra 21st chromosome
- Carried by mothers
- Causes cognitive deficits and developmental delays
How to support children with down syndrome:
Early Intervention
- Benefit from speech therapy, occupational therapy, and exercises for gross and fine motor skills
Benefit from special education and attention at school
- many children can integrate well into regular classes at school
Heredity and environment interact throughout development: Reaction range
- Genotype produces a range of phenotypes in reaction to the environment where development occurs
Genes are _______ or turned on during development
expressed
Environment can _______ genetic expression
trigger
Genes can influence the the type of environment the child is exposed to:
Genotype can lead people to respond to a child in a certain way
Niche picking is:
Deliberately seeking out environments that fit one’s heredity
Environmental influences make children within a family different.
Non shared environmental influences (may explain differences in siblings)
Define: Cephalocaudal Growth
“head to tail growth”
- Motor control of the head comes before control of the arms and then legs
- Birth- 1st year, head and trunk grow faster than the legs
- 1st year- adolescence, legs grow most rapidly, accounting for 60% of height growth
Define: Proximal Growth
“Close in to far out”
- Head, trunk, and arm control comes before coordination of hands and fingers
- Prenatal (chest and internal organs, arms and legs, hands and feet)
- Infancy-childhood (arms and legs grow faster than hands and feet)
What is the secular growth trend?
Changes in physical development from one generation to the next (ex. children are taller and heavier than parents and grandparents were when they were children)
- maybe result of better health and nutrition
Why is sleep essential?
Essential because 80% of growth hormone is secreted while children sleep
How many hours do we generally sleep as we get older?
12 hours at age 3
10 hours at age 7
8 hours at age 12
What happens when one has a lack of or inconsistent sleep?
- affects cognitive processes and adjustment in school
- wake frequently in night
- less successful in school
- Anxious, depressed, and low self-esteem
First ___ years of life are crucial because brain and body are growing rapidly.
2
Preschoolers grow _____ than infants and toddlers.
slower
Define: Malnutrition
Insufficient, excessive or an unbalanced diet, or an inability to enjoy food
1 in ___ children under 5 years suffer from malnutrition.
3
Solutions for malnutrition:
- Teach parents about nutrition and food
- Ensure children eat breakfast
T or F: Girls whose mothers diet are much more likely to try and go on a diet themselves.
True
What does NEDIC stand for?
National eating disorder information centre
Psychosocial factors of childhood eating disorders:
- History of eating problems
- Low self-esteem
- Childhood obesity
- Pressure from parents and peers to lose weight
- Over protective parents
Up to ___% of children below the age of 5 are picky eaters
20%
In the past 25-30 years, the number of overweight children has _______
doubled
Problems that overweight children face:
- Unpopular and low self esteem
- High blood pressure and diabetes
- Risk of being overweight as an adult
Environmental/social causes of obesity:
- cultural norms
- advertising encourages bad eating
- tv viewing time correlated with obesity
- parental emphasis external cues to eat rather than internal
Solutions for obesity:
- Smaller portion sizes
- Provide variety of foods
- lead by example and eat at home
- more fruits and veg
- 2 hours of screen time or less
Children are most likely to die in which type of accidents?
- Car accidents
Improper use of the seat belt and car seats
What are the three most prevalent mental disorders in Canadian children?
- Conduct disorder
- Anxiety
- Depression
Physical changes in children with depression:
- Complain of headaches, general aches and pains
- lack of energy or feel tired all the time
- sleeping or eating problems
Changes in behaviour in children with depression:
- Withdrawal from others
- Cry easily or show less interest in sports, games, or other fun activities they normally like
- anger or teats over fairly small incidents
What is childhood depression caused by?
- Genetic, biological, environmental, and psychological factors
- may be genetic
- life stressors
- may occur with or without a trigger
What is cognitive behaviour therapy?
Therapy with the individual child or the whole family
- Children learn how to:
+ monitor troubling situations and feelings
+ how to counteract negative thinking
+ new ways to handle being sad
What develops in infancy and continues?
- Taste
- Smell
- Touch
- Seeing/perceiving objects
What is habituation?
- Becoming accustomed to a stimulus
- Orienting response disappears after repeated presentations
- Attention is selective
T or F: Habituated children do better on standardized testing because they are able to tune out background noise
True
How does one improve attention?
Draw attention to the relevant information and less attention to irrelevant
Approximately 8-10% of _____ and 3-4% of _____ under the age of 18 years have ADHD
males; females
What are the three types of ADHD?
- Impulsive
- Inattentive
- Combined
Symptoms of inattention:
- Easily distracted, miss details, forget things
- Difficulty focusing attention on organizing and completing a task
- Become bored with a task after only a few minutes
- Trouble completing homework assignments and lose things needed to complete them
Symptoms of Hyperactivity:
- Fidget and squirm in their seats
- Talk nonstop and have difficulty doing quiet tasks
- Dash around, touching or playing with anything in sight
- Trouble sitting still during dinner, school, and story time
Symptoms of impulsivity:
- Impatient and interrupt conversations or activities
- Blurt our inappropriate comments, show their emotions without restraint, and act without regard for consequences
- Difficulty waiting for things they want or waiting their turn
T or F: Children with ADHD have smaller frontal lobes and smaller brain volume
True
How is ADHD treated?
- Stimulant Medication
- Behavioural therapy
What are the two parts of dynamic systems theory?
- Differentiation
- Integration
Define: Differentiation
Each component skill is mastered alone (ie. babies have to learn how to sit up before they can walk)
Define: Integration
Skills are combined into a proper sequence
- Experience is key to improve motor development
What are ones motor skills at age 2-3?
- Walk rhythmically
- Hurried walk changes to run
- Jumps, hops, throws, and catches with rigid upper body
- Pushes while riding toy with feet, some ability to steer
What are ones motor skills at age 3-4?
- Walk up/down stairs alternating feet but uses one foot to lead
- Jumps and hops while flexing upper body
- Throws and catches, but still catches ball against their chest
- Pedals and steers bikes
What are ones motor skills at age 4-5?
- Runs smoothly; walks up/down stairs with alternating feet
- Rides bike rapidly and smooth steering
- Skip with one foot
- Throws and catches ball with hands
What are ones motor skills at age 5-6?
- Increasing running speed
- Engages in sideways stepping
- Increase throwing speed, mature body throwing and catching
What are ones motor skills at age 7-12?
- Continuous fluid skipping (vertical jumps, accurately jumps from square to square)
- more accurate in throwing and kicking
- Become coordinated
T or F: Girls are better at gross motor movement due to greater muscle mass
False: BOYS are better at gross motor movement due to greater muscle mass
Girls are better at locomotion skills that depend on _______ and _______.
balance and agility
What does physical fitness promote?
- Muscle and bone growth
- Cardiovascular health
- Lifelong patterns of exercise
- Positive effects on mental and physical health