• Wednesday May 27,2020


Growth varies from person to person and body length increases continuously. Many factors play a role in growth. Growth can be divided into three phases. People do not always grow humanely, which can be the result of heredity and disease.

What is the growth?

Growth varies from person to person and body length increases continuously.

The growth of a human is largely due to the proliferation of body cells. By dividing the cells more and more of these cells arise. Until the human is fully grown, this process is repeated again and again.

On average, humans grow up to their twenty-fifth year. The growth is controlled by the human growth hormone somatotropin, which is passed through the pituitary gland.

Growth is faster during the night, as the concentration of growth hormone is highest during this time. Children grow at different speeds and there are a few factors that determine the average size.

Function & Task

When the baby is born, the head still accounts for about a quarter of the body length. In the course of growth this changes. Children and adolescents can be divided into three phases of growth:

In the first phase, the time from birth to the third year, the children grow fastest. During this time you can gain up to 45cm in height. The growth rate continuously decreases.

From the age of three one speaks of the second phase of growth. This lasts until shortly before the onset of puberty. In this phase, the children grow between five and six inches per year.

In the third and final growth phase, which begins at puberty, people gain between seven to nine inches in height each year. The growth rate reaches its peak in this growth phase. Adolescents grow between 17 and 24 centimeters, with girls tending to grow less than boys.

On average, girls grow a little faster and are initially taller than boys. But this balances out again in the course of puberty. With the end of puberty comes to a standstill. The height of adulthood is reached.

Hormones play the biggest role in growth. They are messenger substances and pass on the information between the cells, the tissue and the organs in the body. Only with sufficient hormone levels of the hormone somatotropin can full adult size be achieved. This hormone regulates almost all growth processes that are important. It also promotes the conversion of body fat into energy, which regulate blood sugar, and affect the immune system.

Not only the hormone somatotropin plays an important role in the growth process. Also heredity and the way of life of humans are crucial. For example, if the parents are small, the likelihood that the child will not reach excessive body length is high. Already in the time of fertilization is thus approximately determined how big the man will become.

It is also crucial which way of life man pursues during growth. In case of permanent malnutrition or a poor composition of the food (that means, too few proteins or vitamins are consumed) the growth process can be significantly impaired.

Diseases & complaints

Long-lasting illnesses or disturbances in the function of our glands can influence the growth in the negative. If there is a lack of growth hormone, the sufferer suffers from dwarfism.

In dwarfism, the anterior lobe of the pituitary gland did not work well enough and the child remains in physical development. The whole body gives the appearance of an underdeveloped person.

If the thyroid gland does not release enough hormones after birth, it can not only affect the growth of the length. These children suffer from myxedematous dwarfism, which can also affect their cognitive abilities. By supplying the thyroid hormone this defect can be corrected to a large extent.

The opposite of the dwarfism is the high growth. In this case, the anterior pituitary works too fast during development. This peculiarity of growth can only be felt in the later years of life. In this phase, the growth of the bones is already complete. An increase in length of the bones is then not possible, but the bones can then be larger at the ends and there is a peak magnification (acromegaly). In this disease, fingers and hands, as well as toes and feet, nose, lips and chin are enlarged.

Larger people are more likely to struggle with back problems. The body has a heavy burden to bear, this manifests in the form of back pain. But even small people have to fight in everyday life. Not only do small people on average classify their quality of life as lower, they are also more likely to suffer from depression, anxiety, and discomfort.

According to a study, the size of people's satisfaction increases. However, the concrete cause for this is less to be found in the biology of human beings than in social values, which defines a certain size as attractive.

In our age, thanks to modern medical advances, it is possible to determine the expected body size. An exact method is the determination of bone age. Through this investigation, a conclusion can be drawn on the expected growth.

Also, a growth curve can be created in a somatogram. The body develops in the same percentile of the body length, which can predict how the future development will be approximately.

Interesting Articles

Masseteric Flex

Masseteric Flex

The masseter reflex is a self-reflex of the masticatory muscles, which is triggered by a blow on the lower jaw and closes the jaw. The reflex belongs to the muscle stretching reflexes and corresponds to a congenital reflex movement of the masseter muscle. In peripheral and central lesions, the masseter reflex may be absent



A nerve is a closed, rope-like bundle of nerve fibers with a covering of connective tissue in the peripheral nervous system. This, in conjunction with other nerves, paves the way for electrochemical impulses transmitted along the nerve fibers to the peripheral organs. What are nerves? Schematic representation of the anatomy and structure of a nerve cell

Kampomele dysplasia

Kampomele dysplasia

Campomile dysplasia is a mutation-related malformation syndrome. Skeletal dysplasia, stunted growth and respiratory hypoplasia characterize the picture. About ten percent of patients survive the first weeks of life and receive symptomatic oeprative treatment to correct their malformations. What is a Campylobal Dysplasia



The epithalamus is part of the diencephalon and lies between the thalamus and the wall of the third ventricle. The Epithalamus are attributed to the epiphyseal or pineal gland, as well as the two "reins" and some connecting strands. It is certain that the pineal gland takes over important tasks for the control of the circadian rhythm, the day-night rhythm



In the epithelization phase of wound healing mitosis takes place, which closes the resulting tissue defect with new epithelial cells and heralds the subsequent phase of scarring. The epithelization phase follows the granulation phase and hardens the previously formed granulation tissue. Excessive processes of epithelialization can occur with hyperkeratosis and hypergranulation wound healing disorders



Aquacobalamin is one of the B12 vitamins. As such, it participates in the synthesis of amino acids. Lack of aquacobalamin and other cobalamins can lead to severe disorders that may include irreversible neurological damage. What is aquacobalamin? Aquacobalamin or aquocobalamin belongs to the vitamin B12 group, which in biology are also called cobalamins