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The brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sense organs, and making ...
The ten percent of the brain myth or 90% of the brain myth states that humans generally use only one-tenth (or some other small fraction) of their brains. It has been misattributed to many famous scientists and historical figures, notably Albert Einstein. [ 1] By extrapolation, it is suggested that a person may 'harness' or 'unlock' this unused ...
The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together. [1] The bone mass in the skeleton makes up about 14% of the total body weight (ca. 10–11 kg for an average person) and reaches maximum mass ...
Generation Z (often shortened to Gen Z), also known as Zoomers, [1] [2] [3] is the demographic cohort succeeding Millennials and preceding Generation Alpha.Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years, with the generation generally being defined as people born from 1997 to 2012. [4]
Total body surface area (TBSA) is an assessment of injury to or disease of the skin, such as burns or psoriasis. In adults, the Wallace rule of nines can be used to determine the total percentage of area burned for each major section of the body.
Blood plasma. A unit of donated fresh plasma. Blood plasma is a light amber -colored liquid component of blood in which blood cells are absent, but which contains proteins and other constituents of whole blood in suspension. It makes up about 55% of the body's total blood volume. [ 1] It is the intravascular part of extracellular fluid (all ...
Brain–body mass ratio, also known as the brain–body weight ratio, is the ratio of brain mass to body mass, which is hypothesized to be a rough estimate of the intelligence of an animal, although fairly inaccurate in many cases. A more complex measurement, encephalization quotient, takes into account allometric effects of widely divergent ...
Blood is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), [ 2] and contains proteins, glucose, mineral ions, and hormones. The blood cells are mainly red blood cells (erythrocytes), white blood cells (leukocytes), and (in mammals) platelets (thrombocytes). [ 3]