Search results
- Prebirth: Potential – The child who has not yet been born could become anything – a Michelangelo, a Shakespeare, a Martin Luther King – and thus holds for all of humanity the principle of what we all may yet become in our lives.
- Birth: Hope – When a child is born, it instills in its parents and other caregivers a sense of optimism; a sense that this new life may bring something new and special into the world.
- Infancy (Ages 0-3): Vitality – The infant is a vibrant and seemingly unlimited source of energy. Babies thus represent the inner dynamo of humanity, ever fueling the fires of the human life cycle with new channels of psychic power.
- Early Childhood (Ages 3-6): Playfulness – When young children play, they recreate the world anew. They take what is and combine it with the what is possible to fashion events that have never been seen before in the history of the world.
Aug 24, 2018 · The six human life processes are: growth and development, movement and responding to stimuli, order and organization, reproduction and heredity, energy utilization and homeostasis. These processes may be grouped or labeled differently, depending on the source.
- Overview
- Types and rates of human growth
human development, the process of growth and change that takes place between birth and maturity.
Human growth is far from being a simple and uniform process of becoming taller or larger. As a child gets bigger, there are changes in shape and in tissue composition and distribution. In the newborn infant the head represents about a quarter of the total length; in the adult it represents about one-seventh. In the newborn infant the muscles constitute a much smaller percentage of the total body mass than in the young adult. In most tissues, growth consists both of the formation of new cells and the packing in of more protein or other material into cells already present; early in development cell division predominates and later cell filling.
Different tissues and different regions of the body mature at different rates, and the growth and development of a child consists of a highly complex series of changes. It is like the weaving of a cloth whose pattern never repeats itself. The underlying threads, each coming off its reel at its own rhythm, interact with one another continuously, in a manner always highly regulated and controlled. The fundamental questions of growth relate to these processes of regulation, to the program that controls the loom, a subject as yet little understood. Meanwhile, height is in most circumstances the best single index of growth, being a measure of a single tissue (that of the skeleton; weight is a mixture of all tissues, and this makes it a less useful parameter in a long-term following of a child’s growth). In this section, the height curves of girls and boys are considered in the three chief phases of growth; that is (briefly) from conception to birth, from birth until puberty, and during puberty. Also described are the ways in which other organs and tissues, such as fat, lymphoid tissue, and the brain, differ from height in their growth curves. There is a brief discussion of some of the problems that beset the investigator in gathering and analyzing data about growth of children, of the genetic and environmental factors that affect rate of growth and final size, and of the way hormones act at the various phases of the growth process. Lastly, there is a brief look at disorders of growth. Throughout, the emphasis is on ways in which individuals differ in their rates of growth and development.
The changes in height of the developing child can be thought of in two different ways: the height attained at successive ages and the increments in height from one age to the next, expressed as rate of growth per year. If growth is thought of as a form of motion, the height attained at successive ages can be considered the distance travelled, and the rate of growth, the velocity. The velocity or rate of growth reflects the child’s state at any particular time better than does the height attained, which depends largely on how much the child has grown in all preceding years. The blood and tissue concentrations of those substances whose amounts change with age are thus more likely to run parallel to the velocity rather than to the distance curve. In some circumstances, indeed, it is the acceleration rather than the velocity curve that best reflects physiological events.
Britannica Quiz
Characteristics of the Human Body
In general, the velocity of growth decreases from birth onward (and actually from as early as the fourth month of fetal life; see below), but this decrease is interrupted shortly before the end of the growth period. At this time, in boys from about 13 to 15 years, there is marked acceleration of growth, called the adolescent growth spurt. From birth until age four or five, the rate of growth in height declines rapidly, and then the decline, or deceleration, gets gradually less, so that in some children the velocity is practically constant from five or six up to the beginning of the adolescent spurt. A slight increase in velocity is sometimes said to occur between about six and eight years.
This general velocity curve of growth in height begins a considerable time before birth. The peak velocity of length is reached at about four months after the mother’s last menstruation. (Age in the fetal period is usually reckoned from the first day of the last menstrual period, an average of two weeks before actual fertilization, but, as a rule, the only locatable landmark.)
Development of the human body is the process of growth to maturity. The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male.
Find out all about the different stages of a human life cycle and how we change as we grow up in this Bitesize KS2 Explainer guide.
Aug 15, 2022 · We are born, we grow up, we age, and then we die. Unless disease or trauma occurs, most humans go through the various stages of the life described above. Human Development is the process of growing to maturity and mental ability.
People also ask
What are the 6 human life processes?
What is the life cycle of humans?
How long does a human life span last?
What are the energy processes in the human body?
Aug 14, 2020 · Identify and define the different stages of the human lifecycle. Explain how the human body develops from infancy through the toddler years. According to the American Journal of Clinical Nutrition, the human life span, or the maximum length of time possible for human life, is 130 years.
