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Human growthand development. Puberty is the process of physical changes through which a child 's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a female, the testicles in a male.
Human physical appearance. Human physical appearance is the outward phenotype or look of human beings. Image of a Caucasian female (left) and an Asian male (right) human body seen from front (upper) and back (lower). Adult human bodies photographed whose naturally-occurring pubic, body, and facial hair have been deliberately removed to show ...
Adolescence is a time of rapid cognitive development. [60] Piaget describes adolescence as the stage of life in which the individual's thoughts start taking more of an abstract form and the egocentric thoughts decrease, allowing the individual to think and reason in a wider perspective. [61]
Human body shape is a complex phenomenon with sophisticated detail and function. The general shape or figure of a person is defined mainly by the molding of skeletal structures, as well as the distribution of muscles and fat. [1] Skeletal structure grows and changes only up to the point at which a human reaches adulthood and remains essentially ...
Preadolescence is a stage of human development following middle childhood and preceding adolescence. It commonly ends with the beginning of puberty. Preadolescence is commonly defined as ages 9–12 ending with the major onset of puberty.
Child development. A child using fingers to make a small, circular hole in the sand, 1997. Child development involves the biological, psychological and emotional changes that occur in human beings between birth and the conclusion of adolescence . Childhood is divided into three stages of life which include early childhood, middle childhood, and ...
The leg (between the knee and the ankle) is the crus and crural area, the lateral aspect of the leg is the peroneal area, and the calf is the sura and sural region. The ankle is the tarsus and tarsal, and the heel is the calcaneus or calcaneal. The foot is the pes and pedal region, and the sole of the foot the planta and plantar.
Human growthand development. 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. The resulting zygote develops through mitosis and cell differentiation, and the resulting embryo then implants in the ...