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Pneuma
''Pneuma'' () is an ancient Greek word for "breath", and in a religious context for " spirit" or "soul". It has various technical meanings for medical writers and philosophers of classical antiquity, particularly in regard to physiology, and is also used in Greek translations of ''ruach'' רוח in the Hebrew Bible, and in the Greek New Testament. In classical philosophy, it is distinguishable from '' psyche'' (), which originally meant "breath of life", but is regularly translated as "spirit" or most often "soul". Classical antiquity Presocratics , "air in motion, breath, wind", is equivalent in the material monism of Anaximenes to (, "air") as the element from which all else originated. This usage is the earliest extant occurrence of the term in philosophy. A quotation from Anaximenes observes that "just as our soul (''psyche''), being air (), holds us together, so do breath () and air () encompass the whole world." In this early usage, and are synonymous. Ancient G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vital Heat
Vital heat, also called innate or natural heat, or ''calidum innatum'', is a term in Ancient Greek medicine and philosophy that has generally referred to the heat produced within the body, usually the heat produced by the heart and the circulatory system. Vital heat was a somewhat controversial subject because it was formerly believed that heat was acquired by an outside source such as the element of fire. Origin of concept It was a previously accepted concept that heat was absorbed through external sources; however, the concept of vital heat was more or less stumbled upon by a physiological observation that associates cold with the dead and heat with the living. "For the concept of vital heat we may – somewhat arbitrarily – take our starting point in Parmenides. His correlation of dead with cold, alive with warm, may not have been primarily intended as a contribution to physiology, yet the physiological significance of this thought was perceived by his successors; witness E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Movement Of Animals
''Movement of Animals'' (or ''On the Motion of Animals''; Greek Περὶ ζῴων κινήσεως; Latin ''De Motu Animalium'') is one of Aristotle's major texts on biology. It sets out the general principles of animal locomotion. Pneuma All animals "possess an inborn spirit (''pneuma sumphuton'') and exercise their strength in virtue of it." (703a10). This inborn spirit is used to explain desire (''orexis''), which is classified as the "central origin (''to meson''), which moves by being itself moved." (703a5-6). Aristotle furthers this idea of being a "middle cause" by furnishing the metaphor of the movement of the elbow, as it relates to the immobility of the shoulder (703a13). The inborn ''pneuma'' is, likewise, tethered to the soul, or as he says here, ''tēn'' ''arche tēn psuchikēn, "''the origin of the soul," the soul as the center of causality. This "spirit" is not the soul itself but a limb of the soul that helps it move. The inborn spirit causes movement in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirit (animating Force)
In folk belief, spirit is the vital principle or animating essence within all living things. As recently as 1628 and 1633 respectively, both William Harvey and René Descartes still speculated that somewhere within the body, in a special locality, there was a "vital spirit" or "vital force", which animated the whole bodily frame, just as the engine in a factory moves the machinery in it. Overview People have frequently conceived of spirit as a supernatural being, or non-physical entity; for example, a demon, ghost, fairy, or angel. In ancient Islamic terminology however, the term ''spirit'' ('' rūḥ''), applies only to "pure" spirits, but not to other invisible creatures, such as jinn, demons and angels. Historically, spirit has been used to refer to a "subtle" as opposed to "gross" material substance, as put forth in the notable last paragraph of Sir Isaac Newton's ''Principia Mathematica''. In English Bibles, "the Spirit" (with a capital "S"), specifically denotes th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erasistratus
Erasistratus (; grc-gre, Ἐρασίστρατος; c. 304 – c. 250 BC) was a Greek anatomist and royal physician under Seleucus I Nicator of Syria. Along with fellow physician Herophilus, he founded a school of anatomy in Alexandria, where they carried out anatomical research. As well, he is credited with helping to found the methodic school of teachings of medicine in Alexandria whilst opposing traditional humoral theories of Hippocratic ideologies. Together with Herophilus, he is credited by historians as the potential founder of neuroscience due to his acknowledgements of nerves and their roles in motor control through the brain and skeletal muscles.Wills, Adrian, and A Wills. “Herophilus, Erasistratus, and the Birth of Neuroscience.” ''Lancet'' 354, no. 9191 (November 13, 1999): 1719–20. doi:10.1016/S0140-6736(99)02081-4. Furthermore, Erasistratus is seen as one of the first physicians/scientists to conduct recorded dissections and potential vivisections alongside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diocles Of Carystus
Diocles of Carystus (; el, Διοκλῆς ὁ Καρύστιος; la, Diocles Carystius; also known by the Latin name Diocles Medicus, i.e. "Diocles the physician"; c. 375 BC – c. 295 BC) was a well-regarded Greek physician, born in Carystus, a city on Euboea, Greece. His significance was as a major thinker, practitioner, and writer of the fourth century. Life Diocles lived not long after the time of Hippocrates, to whom Pliny says he was next in age and fame. Not much is known of his life, other that he lived and worked in Athens, where he wrote what may be the first medical treatise in Attic (not in Ionic as was customary in Greek medical writings). His most important work was in practical medicine, especially diet and nutrition, but he also wrote the first systematic textbook on animal anatomy. According to a number of sources, he was the first to use the word "anatomy" to describe the study. He belonged to the medical sect of the '' Dogmatici'', and wrote several medi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disease
A disease is a particular abnormal condition that negatively affects the structure or function of all or part of an organism, and that is not immediately due to any external injury. Diseases are often known to be medical conditions that are associated with specific signs and symptoms. A disease may be caused by external factors such as pathogens or by internal dysfunctions. For example, internal dysfunctions of the immune system can produce a variety of different diseases, including various forms of immunodeficiency, hypersensitivity, allergies and autoimmune disorders. In humans, ''disease'' is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person affected, or similar problems for those in contact with the person. In this broader sense, it sometimes includes injuries, disabilities, disorders, syndromes, infections, isolated symptoms, deviant behaviors, and atypical variations of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veins
Veins are blood vessels in humans and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart. Veins are less muscular than arteries and are often closer to the skin. There are valves (called ''pocket valves'') in most veins to prevent backflow. Structure Veins are present throughout the body as tubes that carry blood back to the heart. Veins are classified in a number of ways, including superficial vs. deep, pulmonary vs. systemic, and large vs. small. *Superficial veins are those closer to the surface of the body, and have no corresponding arteries. *Deep veins are deeper in the body and have corresponding arteries. * Perforator veins drain from the superficial to the deep veins. These are usually referred to in the lower limbs and feet. *Comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arteries
An artery (plural arteries) () is a blood vessel in humans and most animals that takes blood away from the heart to one or more parts of the body (tissues, lungs, brain etc.). Most arteries carry oxygenated blood; the two exceptions are the pulmonary and the umbilical arteries, which carry deoxygenated blood to the organs that oxygenate it (lungs and placenta, respectively). The effective arterial blood volume is that extracellular fluid which fills the arterial system. The arteries are part of the circulatory system, that is responsible for the delivery of oxygen and nutrients to all cells, as well as the removal of carbon dioxide and waste products, the maintenance of optimum blood pH, and the circulation of proteins and cells of the immune system. Arteries contrast with veins, which carry blood back towards the heart. Structure The anatomy of arteries can be separated into gross anatomy, at the macroscopic level, and microanatomy, which must be studied with a micro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classical Antiquity
Classical antiquity (also the classical era, classical period or classical age) is the period of cultural history between the 8th century BC and the 5th century AD centred on the Mediterranean Sea, comprising the interlocking civilizations of ancient Greece and ancient Rome known as the Greco-Roman world. It is the period in which both Greek and Roman societies flourished and wielded huge influence throughout much of Europe, North Africa, and Western Asia. Conventionally, it is taken to begin with the earliest-recorded Homeric Greek, Epic Greek poetry of Homer (8th–7th-century BC), and continues through the Origins of Christianity, emergence of Christianity (1st century AD) and the fall of the Western Roman Empire (5th-century AD). It ends with the decline of classical culture during late antiquity (250–750), a period overlapping with the Early Middle Ages (600–1000). Such a wide span of history and territory covers many disparate cultures and periods. ''Classical antiqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristotle
Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of philosophy within the Lyceum and the wider Aristotelian tradition. His writings cover many subjects including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics, meteorology, geology, and government. Aristotle provided a complex synthesis of the various philosophies existing prior to him. It was above all from his teachings that the West inherited its intellectual lexicon, as well as problems and methods of inquiry. As a result, his philosophy has exerted a unique influence on almost every form of knowledge in the West and it continues to be a subject of contemporary philosophical discussion. Little is known about his life. Arist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hippocrates
Hippocrates of Kos (; grc-gre, Ἱπποκράτης ὁ Κῷος, Hippokrátēs ho Kôios; ), also known as Hippocrates II, was a Greek physician of the classical period who is considered one of the most outstanding figures in the history of medicine. He is traditionally referred to as the "Father of Medicine" in recognition of his lasting contributions to the field, such as the use of prognosis and clinical observation, the systematic categorization of diseases, or the formulation of humoral theory. The Hippocratic school of medicine revolutionized ancient Greek medicine, establishing it as a discipline distinct from other fields with which it had traditionally been associated ( theurgy and philosophy), thus establishing medicine as a profession. However, the achievements of the writers of the Hippocratic Corpus, the practitioners of Hippocratic medicine, and the actions of Hippocrates himself were often conflated; thus very little is known about what Hippocrates actual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brain
A brain is an organ (biology), organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as Visual perception, vision. It is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 14–16 billion neurons, and the estimated number of neurons in the cerebellum is 55–70 billion. Each neuron is connected by synapses to several thousand other neurons. These neurons typically communicate with one another by means of long fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells. Physiologically, brains exert centralized control over a body's other organs. They act on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones. This centralized control all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
