Human development is the process of growth and change that takes place between birth and maturity. The growth and development of a child consists of a highly complex series of changes, with different …

Mar 23, 2026 · Human body - Anatomy, Physiology, Development: In general structure, the human body follows a plan that can be described as a cylinder enclosing two tubes and a rod. This body plan is …

Mar 17, 2026 · Human evolution, the process by which human beings developed on Earth from now-extinct primates. The only extant members of the human tribe, Hominini, belong to the species Homo …

The human nervous system is the series of cells and nerve tracts that conduct stimuli from sensory receptors in the periphery to receptors in the brain and spinal cord and then conduct impulses back …

Human nervous system - Morphology, Development, Anatomy: By 18 days after fertilization, the ectoderm of the embryonic disk thickens along what will become the dorsal midline of the body, …

Human endocrine system, group of ductless glands that secrete hormones necessary for normal growth and development, reproduction, and homeostasis.

Feb 25, 2026 · thymus, pyramid-shaped lymphoid organ that, in humans, is immediately beneath the sternum (breastbone) at the level of the heart. The organ is called thymus because its shape …

Human development - Growth, Maturation, Development: During the adolescent spurt in height, for a year or more, the velocity of growth approximately doubles; a boy is likely to be growing again at the …

Cell differentiation is the process by which an immature cell develops into a specialized cell type with a distinct structure and function.

Mar 1, 2026 · Human genetics, study of the inheritance of characteristics by children from parents. Human inheritance does not differ in any fundamental way from inheritance in other organisms. An …