Chapter 5 : Growth5.1: Human Growth Pattern

Pn. Rohaillah binti Mohd Jabid

SMJK Chong Hwa, KL

1. Growth is an increase in body size, number of cells, weight and change in body shape and function.

2. This process is irreversible and permanent .

The characteristics of human growth.

1. In human, growth can be determined by measuring height and weight at suitable intervals over a period of time.

2. The measurements are plotted against time to obtain growth curve.

3. Human growth curve can be divided into five stages:1. Infancy ( Rapid growth)

2. Childhood (Slow growth)

3. Adolescence (Rapid growth)

4. Adulthood (Minimal growth)

5. Old age (Negative growth)

Please refer your text book page 97.

Comparing the growth rates of boys and girls

Boys Growth stage Gilrs

Same rate Infancy Same rate

Same rate Early Childhood (1-3 y.o)

Same rate

Faster Childhood (4 y.o-12 y.o)

Slower

Slower Adolescence (12-14y.o)

Faster (puberty)

Faster (puberty) Adolescence (14-18 y.o)

Slower

1.

Effects of nutrition on the growth of children.

1. A healthy growing needs a lot of energy and this can be obtained mainly from carbohydrate.

2. Proteins are necessary for the growth and repair cells.

3. Vitamin D and Calcium are required for the formation of strong teeth and bones.

4. Lack of it, cause Rickets.