Slide 1

Growth and Development in Humans

Development of the embryo in the womb (uterus)

The embryo that attached to the uterus, continues to grow and develop to form two main parts of cells and tissues.

The first part of the embryo that will form the fetus, and the other part will form a membrane that called extra embryo membrane.

Then extra embryo membrane was subsequently formed the amnion and umbilical cord which is the liaison between the embryo with its parent network.

Stages of Humans Development

The development before the birth.

The development after the birth.

The development before the birth

Fertilization

1st-2ndWeek

Third-4thWeek

5th-6th Week

7th-10th Week

11th-14thWeek

15th 38thWeek

Fertilization

At this process happened impregnation between egg cell and sperm cell yielding a zygot, genetically the zygot can be a men or woman.

From one cell grow become two cell, four cell, and so on. This cell will form embryo body, internal organ, external organ, and amnion.

At 1st week the embryo will patch at its mother womb.

At 2nd week, happened first growth of embryos brain cell. The Embryos body formed to become 3 stratum: External stratum, middle stratum (mesoderm) and internal stratum ( endoderm).

1st-2ndWeek

The embryos heart start to beating.

The brain and the backbone are separated. The brain divided become three segment, that is front brain, middle brain, and backside brain. Placenta, legs and hands, start to be formed.

Third - 4thWeek

4th Week

Hands radius are grow and also internal organ, such as : tongue, hearth, and stomach; and owning foot and thigh.

At 5th week, have formed palate (layer between mouth and tongue), complete with tip of tooth. Face have looked like human being face and embryo start to moved.

At 6th week, the embryos radius and toes have cleared. Face and lips sensitive with touched, nerve system and heart ready to function.

5th-6th Week

Eyelid start to formed

Smell sensory start to expand.

Fetuss movement constantly, usually kicking and stretching body.

7th-10th Week

Bone marrow start to produce phagocytes

There is external reproduction organ

Ear interior formed

There are fetus fingerprint, nerve have been arranged in layers myelin, and entire fetus body sensitive with touched.

Baby Period

Age 1 months, baby start to invert his/her head, learn focused eyes, and also coordinated eyes by following movable goods.

Age 2 months, the baby start to smile and coordinated hand to hold object.

Age 3 months, baby have started to learn speaking.

Age 6 months, baby can differentiate between people who recognize and foreigner.

Age 7 months, baby start to rotate, sit, then crawl, learn to stand up while holding something.

Under 5 years old Period

In the end of first years, he can stand up without holding. And also start to learn imitate sound that owning certain meaning.

In second years, he can know about the relationship between himself and his family.

Child period

Age 3 6 years old is child period, the curious with something very uppermost.

Childs dream grow rapidly, full of imagination

Teens Period

At teenager happened the change in growth covering personality maturity and growth. The period is represent human being phase of adult is often referred with a period of puberty.

Puberty Period

Growth of body happened very quickly, this period maturation.

In this period, man can produce sperm and women can produce ovum that marked by secondary sex characteristics.

Pubertys Characteristic

In women :

Breasts began bigger than before.

Increase high

Pubic hair appears

First menstruation

In Man :

Increase height Pubic hair appears

First ejaculation of semen

Voice began to sound in.

Formation of a mustache and beard

Adult period

At a period of adult, high growth of humans body stopped. Psychologically, human being have matured in idea, start aware of its responsibility. Thinking that work and education are important for the future, and also have planning about family.

Old period

A period of this old age :

The strength of bone decreases

If injuring, hard to recover

The equilibrium of metabolism is decrease decreasing of organs activity

decreasing of skins elasticity

white hair

Menopause was happened in woman ( age 48-50 years old), that is ending of her ability to reproduction ovum.

At men, ability of sexual was decreased.