HEALTH AND HUMAN

DEVELOPMENTUnit 1: Youth health and

developmentAOS 2: Transition to adulthood

Chapter 3: Transition and physical development 3

Inherited and environmental influences (61) Inherited influences- ‘factors attributed to

an individual’s genetic composition, transmitted from generation to generation’

1. What are genes made up of? 2. What does the DNA code control? 3. What sex chromosomes do males have? 4. What sex chromosomes do females

have? 5. During the formation of the ova and

sperm what does the special type of cell division create?

Figure 3.9-P. 61

Inherited and environmental influences

Sex chromosomes

Science’s tall story: it’s all in the genes Page 62 1. What did the researchers discover? 2. Where does the height difference

between men and woman come from? 3. What are the genes supposedly

responsible for height in males? 4. What is one theory relating to men

developing osteoporosis?

Genes, the environment and puberty Read 63 Discuss

Skill builder 3.3 Page 63-64 Questions 1-4

Review Page 64 Questions 1-16

Food intake Increased demand in nutritional uptake during

the transition to adulthood Energy requirements differ for individual growth

rates and activity levels Energy is essential for the development of new

tissue that includes bone, muscle and fat during growth

Peak bone mass is achieved (calcium ,exercise, vitamin D)- delay osteoporosis

Iron is important due to generating haemoglobin in the red blood cells and myoglobin in the muscles

Food intake- read page 66-671. List some of the health problems linked

to inappropriate food intake?2. What are some dietary guidelines for

young people? 3. What are some foods that young people

consume that ignore nutritional value? 4. Skipping breakfast can lead to what sort

of problems?

Interest box 3.1- Iron deficiency (65-66)1. What condition can iron deficiency lead

to? 2. What occurs during this condition?3. What are some common signs of iron

deficiency?4. What groups are most at risk of

developing iron deficiency? 5. List 3 types of food which will help you

get enough iron in your diet?6. What are the two types of irons in foods?7. Why can athletes be at risk of iron

deficiency?

Activity 3.8 Daily Food Consumption Page 67-68 Question 1-7

Food website List food they have taken in the last 24 hours Iron? Calcium? Saturated fat? collect a sample one-day food intake and use a

software package such as Food Scan or Food Works (see Resources) to evaluate its nutritional adequacy, discussing the short- and long-term consequences on health and development if this one-day food intake was to be eaten on a regular basis

Physical activity Research shows that physical

activity can decrease the risk of medical complications such as cardiovascular disease, diabetes, colon cancer, bone disease, mental illness and obesity

Evidence suggest that physical activity is declining among young people

Physical activity

Physical activity

declining

Tecnological SocialEnvironmentalEconomics

Activity 3.9- Levels of exercise- p. 69 Questions 1-3

Physical activity conduct a survey of male and female

students in your school to determine the types of physical activity undertaken and the number of hours spent on physical activity each week; graph class data using Excel; analyse results, outlining reasons for the similarities and differences and the short- and long-term impact on youth health and development

Activity 3.10: Links between watching television and growth- p.69-70 Questions 1-4

Handout- Food

Body weight ‘An index that expresses adult weight in

relation to height’BMI= weight (kg) height (m)2

Acceptable: below 25 kg/m2

Overweight: 25-30 kg/m2

Obese: over 30 kg/m2

Does not take into account that muscles weigh more then fat therefore a muscular person may seem to be overweight

Body weight Being overweight is a risk factor for

cardiovascular disease, diabetes, breast cancer and degenerative joint disease

Risk factors for being overweight are heredity, lack of physical activity and unnecessary food intake

Being underweight can result in growth failure, nutritional deficiencies, delayed puberty and irregular menstrual cycles

Risk factors for being underweight include restrictive diets, excessive exercise and eating disorders such as anorexia nervosa and bulimia nervosa

Am I overweight?

Review- p.71 Question 1-7

Looking back Page 72 Question 2

Handout: Transition to Adulthood 2