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Summary Unit 1 - Human Lifespan Development

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A summary of unit 1 human life span development

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Growth is an increase in a measurable quantity

Development acquisition of skills and abilities order of sequence

Principles of growth

Growth rates are different, Different body parts grow quicker, Boys and girls grow differently, 2 people same
age but different height

Gross motor skills

Infancy 0-2 = grasping, lifting head and chest when lying on front,

6months =roll, crawl, sit

11-13 months =stand, cruise, and walk

2yrs =climb onto furniture,

2 ½yrs =kick a ball

3-4yrs =balance and walking along with a line, pedal, and control tricycle, run forward and backward

5-8yrs = skip with rope, hop ad skip catch, and throw a ball

6yrs=ride a bicycle

Fine motor skills

Infancy 0-2 =grasp an adult’s finger

3months =hold rattle

6 months =grasp toy

12 months =pick up toys using 3 fingers (pincer grasp)

18months=build with small blocks, use spoon, make marks with crayons use all his fingers (palmer grasp)

3yrs=use fork spoons, turn pages, button, and unbutton clothing

4yrs=color pictures and thread beads

5yrs= use manipulation -construct blocks, hand-eye coordination – to fit the pieces in their correct place

Gripping =strength in fingers to hold objects firmly: hold rattle, tricycle handle, or spoon

Manipulation = movement of objects use fingers and hands turn and twist objects: build blocks, play a musical
instrument

Hand-eye coordination =control of eye movement at the same time as finger and hand movement: sewing,
writing, completing jigsaw puzzles

Physical development in adolescence

Puberty =period of rapid growth from child to adult

Primary sex characteristics= features you have seen the birth

Males =penis, spontaneous erections Females =ovaries, vagina, uterus enlarges

Secondary sex characteristics= features you get after puberty

, Males=voice deepens, sweats more, muscles and fat increases Females=vaginas lengthen, breasts develop,
ovaries release eggs, wider hips, the menstrual cycle starts

Hormones

Testosterone produced by testes is responsible for the growth of penis and testes, pubic hair, development of
muscles, lowering voice

Oestrogen is produced by ovaries responsible for ovulation and the menstrual cycle Progesterone important in
pregnancy

Physical development in early adulthood

Hormones in pregnancy

Progesterone increases to maintain pregnancy and stimulates the milk

Body change

Hips become wider to carry weight, Hormones affect the shape and appearance of breasts, Darkened veins
increase blood supply, Nipples darken, and the areola becomes sensitive

Perimenopause

Around 40-45yrs old women reach the end of reproductive years called perimenopause

Symptoms

Hot flushes, night sweats, Mood swings, loss of libido (sexual desire), Vaginal dryness

Physical development in middle adulthood

Signs

Grey hair, Loss of muscle tone, strength, and stamina, Men lose hair, Women no longer fertile, Loss of height

Menopause

Natural physiological change that happens to women in middle adulthood

Over several yrs gradually ending of menstruation

Symptoms

Reduction in oestrogen:

Ovaries stop producing eggs, Thinning and shrinkage of vagina

Reduction of oestrogen and progesterone:

Gradually stops menstruation, Impact libido (sexual desire)

Reduction in oestrogen:

Affects the hypothalamus in the brain, regulate temperature, cause hot flushes and night sweats, affect health
of hair, skin, and nails, Cause mood swings as oestrogen regulate neurotransmitters affect mood

Physical development of later adulthood:

Symptoms

less elasticity the skin, decline in strength, loss of muscle, loss of stamina, less mobility= smaller and large
muscles, reduction in vision, reduction in hearing, dimming of hair on the head and pubic areas, the decline in
the performance of organs, susceptible to disease and infection

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Uploaded on
March 30, 2023
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2022/2023
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