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The size–weight illusion, also known as the Charpentier illusion, is named after the French physician Augustin Charpentier [1] because he was the first to demonstrate the illusion experimentally. [ 2 ] [ 3 ] [ 4 ] It is also called De Moor's illusion , named after Belgian physician Jean Demoor (1867–1941).
The size of the nervous system ranges from a few hundred cells in the simplest worms, to around 300 billion cells in African elephants. [4] The central nervous system functions to send signals from one cell to others, or from one part of the body to others and to receive feedback.
[213] [214] There are significant geographical variations in human life expectancy, mostly correlated with economic development – for example, life expectancy at birth in Hong Kong is 87.6 years for girls and 81.8 for boys, while in the Central African Republic, it is 55.0 years for girls and 50.6 for boys.
Nervous tissue, also called neural tissue, is the main tissue component of the nervous system.The nervous system regulates and controls body functions and activity. It consists of two parts: the central nervous system (CNS) comprising the brain and spinal cord, and the peripheral nervous system (PNS) comprising the branching peripheral nerves.
The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord.The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and diploblasts.
In 1809 Gall began writing his principal [23] work, The Anatomy and Physiology of the Nervous System in General, and of the Brain in Particular, with Observations upon the possibility of ascertaining the several Intellectual and Moral Dispositions of Man and Animal, by the configuration of their Heads. It was not published until 1819.
Acetylcholine was the first neurotransmitter discovered in the peripheral and central nervous systems. It activates skeletal muscles in the somatic nervous system and may either excite or inhibit internal organs in the autonomic system. [17] It is main neurotransmitter at the neuromuscular junction connecting motor nerves to muscles.
Personality is any person's collection of interrelated behavioral, cognitive, and emotional patterns that comprise a person’s unique adjustment to life. [1] [2] These interrelated patterns are relatively stable, but can change over long time periods, [3] [4] driven by experiences and maturational processes, especially the adoption of social roles as worker or parent. [2]