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Genes and the environment influence human biological variation in visible characteristics, physiology, disease susceptibility, mental abilities, body size, and life span. Though humans vary in many traits (such as genetic predispositions and physical features), humans are among the least genetically diverse primates.
May 26, 2024 · Following the ancestors of modern human beings into the distant past raises the question of what is meant by the word human. H. sapiens is human by definition, whereas apes are not. But what of the extinct members of the human tribe ( Hominini ), who were clearly not H. sapiens but were nonetheless very much like them?
May 26, 2024 · Learn about the structure, function, and composition of the human body, the physical substance of the human organism. Explore the tissues, organs, systems, and biochemical constituents that make up the human anatomy and physiology.
- The Editors of Encyclopaedia Britannica
- Chemically, the human body consists mainly of water and organic compounds—i.e., lipids, proteins, carbohydrates, and nucleic acids. The human body...
- The four main types of tissue in the human body are epithelial, muscle, nerve, and connective.
- The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory sy...
A human is a member of the species Homo sapiens, which means 'wise man' in Latin. [3] Carolus Linnaeus put humans in the mammalian order of primates. [1] Humans are a species of hominid, and chimpanzees, bonobos, gorillas and orangutans are their closest living relatives. Humans are mammals.
Learn the meaning, synonyms, examples, and history of the word human as an adjective and a noun. Find out how human is related to other words and phrases, and explore related articles and entries.
May 19, 2024 · Learn about human beings, the culture-bearing primates classified in the genus Homo, especially the species H. sapiens. Explore human evolution, anatomy, cognition, language, and culture with Britannica articles, videos, and essays.
Learn the meaning of human as an adjective and a noun, with synonyms, antonyms, and usage examples. Find out how human differs from related words such as Homo sapiens, specialized, and only human.
