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Age 11
- The typical girl is slightly shorter than the typical boy at all ages until adolescence. She becomes taller shortly after age 11 because her adolescent spurt takes place two years earlier than the boy’s. At age 14 she is surpassed again in height by the typical boy, whose adolescent spurt has now started, while hers is nearly finished.
www.britannica.com/science/human-development/Boys-and-girls-height-curves
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Girls on the average start their growth spurt between the ages of 10 and 14, about a year before boys. This is the reason girls are often taller than boys of the same age in early adolescence. The growth spurt in girls is also shorter than in boys.
- The average boy starts his growth spurt at the age of 12, and it is much more dramatic. Boys can grow four inches (10 cm) per year, but the most in...
- Before girls start menstruating they have already reached close to their maximum height. The period of intense growth occurs from 6 to 12 months be...
- The onset of puberty in girls usually starts at around the age of 10. Girls on the average start their growth spurt between the ages of 10 and 14,...
- Boys can grow four inches (10 cm) per year, but the most intense period of growth only lasts for a few months.
- Overview
- Boys’ and girls’ height curves
- Different tissues and parts of the body
- Alterations in growth rate
The graphs mentioned above also show the height curves from birth to maturity. Up to age two, the child was measured lying on his back. One examiner held his head in contact with a fixed board, and a second person stretched him out to his maximum length and then brought a moving board into contact with his heels. This measurement, called supine length, averages about one centimetre more than the measurement of standing height taken on the same child, hence the break in the line of the curve at age two. This occurs even when, as in the best techniques, the child is urged to stretch upwards to the full and is aided in doing so by a measurer’s applying gentle upward pressure to his mastoid processes.
The typical girl is slightly shorter than the typical boy at all ages until adolescence. She becomes taller shortly after age 11 because her adolescent spurt takes place two years earlier than the boy’s. At age 14 she is surpassed again in height by the typical boy, whose adolescent spurt has now started, while hers is nearly finished. In the same way, the typical girl weighs a little less than the boy at birth, equals him at age eight, becomes heavier at age nine or 10, and remains so until about age 141/2.
The graphs mentioned above also show the height curves from birth to maturity. Up to age two, the child was measured lying on his back. One examiner held his head in contact with a fixed board, and a second person stretched him out to his maximum length and then brought a moving board into contact with his heels. This measurement, called supine length, averages about one centimetre more than the measurement of standing height taken on the same child, hence the break in the line of the curve at age two. This occurs even when, as in the best techniques, the child is urged to stretch upwards to the full and is aided in doing so by a measurer’s applying gentle upward pressure to his mastoid processes.
The typical girl is slightly shorter than the typical boy at all ages until adolescence. She becomes taller shortly after age 11 because her adolescent spurt takes place two years earlier than the boy’s. At age 14 she is surpassed again in height by the typical boy, whose adolescent spurt has now started, while hers is nearly finished. In the same way, the typical girl weighs a little less than the boy at birth, equals him at age eight, becomes heavier at age nine or 10, and remains so until about age 141/2.
The majority of skeletal and muscular dimensions follow approximately the growth curve described for height, and so also do the dimensions of the internal organs such as the liver, the spleen, and the kidneys. But some exceptions exist, most notably the brain and skull, the reproductive organs, the lymphoid tissue of the tonsils, adenoids, and intestines, and the subcutaneous fat.
Britannica Quiz
Characteristics of the Human Body
The size attained by various tissues can be given as a percentage of the birth-to-maturity increment. Height follows the “general” curve. The reproductive organs, internal and external, have a slow prepubescent growth, followed by a large adolescent spurt; they are less sensitive than the skeleton to one set of hormones and more sensitive to another.
The brain, together with the skull covering it and the eyes and ears, develops earlier than any other part of the body and thus has a characteristic postnatal curve. At birth it is already 25 percent of its adult weight, at age five about 90 percent, and at age 10 about 95 percent. Thus if the brain has any adolescent spurt at all, it is a small one. A small but definite spurt occurs in head length and breadth, but all or most of this is due to thickening of the skull bones and the scalp, together with development of the air sinuses.
The dimensions of the face follow a path somewhat closer to the general curve. There is a considerable adolescent spurt, especially in the lower jaw, or mandible, resulting in the jaw’s becoming longer and more projecting, the profile straighter, and the chin more pointed. As always in growth, there are considerable individual differences, to the point that a few children have no detectable spurt at all in some face measurements.
At puberty, a considerable alteration in growth rate occurs. There is a swift increase in body size, a change in shape and composition of the body, and a rapid development of the gonads, or sex glands—the reproductive organs and the characters signalling sexual maturity. Some of these changes are common to both sexes, but most are sex-specific. Boy...
Fast facts on when girls stop growing: Females usually start and finish puberty sooner than males. While there is a typical age range for puberty to start, everyone hits puberty at a different...
Feb 12, 2004 · What kicks off the teenage growth spurt in girls? Find out at BBC Science & Nature.
Sep 26, 2023 · At this stage, male growth increases more than female growth — on average, adult males are 14 cm taller than adult females. Learn about the signs and stages of puberty.
- Beth Sissons
The growth spurt in girls occurs in early adolescence between the ages of about 9½ years and 13½ years (most commonly about age 11½). Girls grow about 3½ inches (about 9 centimeters) during their year of maximum growth. In general, boys weigh more and are taller than girls.
Mar 16, 2016 · Gender. Boys tend to be taller than girls. Genetic Factors. A person’s height tends to run in families. Most people in a certain family will grow at similar rates and be of similar height....
