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The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems . The external human body consists of a head , hair , neck , torso (which includes the thorax and abdomen ), genitals , arms , hands , legs , and feet .
Human embryonic development refers to the development and formation of the human embryo. It is characterised by the process of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, human development entails growth from a one-celled zygote to an adult human being.
English: Within the human body there are 3 types of levers. The first class lever which can be seen, is located in the head. The second class lever is located within the leg. Finally, the third class lever is located in the arm.
This is an accepted version of this page This is the latest accepted revision, reviewed on 16 February 2025. List of organ systems in the human body Part of a series of lists about Human anatomy General Features Regions Variations Movements Systems Structures Arteries Bones Eponymous Foramina Glands endocrine exocrine Lymphatic vessels Nerves Organs Systems Veins Muscles Abductors Adductors ...
Why Mosquitoes Buzz in People's Ears: A West African Tale is a 1975 children's picture book by Verna Aardema and illustrated by Leo and Diane Dillon.Published in hardcover by Dial Books for Young Readers it is told in the form of a cumulative tale written for young children, which tells an African legend.
In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [ 1 ] [ 2 ] It includes the cardiovascular system , or vascular system , that consists of the heart and blood vessels (from Greek kardia meaning heart , and Latin vascula meaning vessels ).
Structural organization of human body: Organ system; Tissue; Reference to the definition of organ system ; Reference to the definition of organ ; Functions of human life: Anabolism; Addition of a schematic diagram showing anabolism and catabolism ; Requirements for human life: Homeostatic imbalance; Targeted temperature management
The human brain is the central organ of the nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sensory nervous system ...