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Greek physician Galen was the first to give written description about the pineal gland in the 2nd century CE. [8] He indicated that the structure as an part of the brain was already known to earlier Greek scholars, crediting Herophilus (325–280 BCE) as the first to have described the possible role of the gland. [9]
Furthermore, the pineal gland is a hypothetical candidate for producing a mind's eye. Rick Strassman and others have postulated that during near-death experiences (NDEs) and dreaming, the gland might secrete the hallucinogenic chemical N,N-Dimethyltryptamine (DMT) to produce internal visuals when external sensory data is occluded. [27]
The pineal gland is present in almost all vertebrates, but is absent in protochordates in which there is a simple pineal homologue. The hagfish , archaic vertebrates, lack a pineal gland. [ 7 ] In some species of amphibians and reptiles, the gland is linked to a light-sensing organ, variously called the parietal eye , the pineal eye or the ...
Religious images in Christian theology have a role within the liturgical and devotional life of adherents of certain Christian denominations. The use of religious images has often been a contentious issue in Christian history. Concern over idolatry is the driving force behind the various traditions of aniconism in Christianity.
As Christianity spread throughout the Hellenic world, an increasing number of church leaders were educated in Greek philosophy. The dominant philosophical traditions of the Greco-Roman world then were Stoicism, Platonism, Epicureanism, and, to a lesser extent, the skeptic traditions of Pyrrhonism and Academic Skepticism.
In the Anglican and Methodist traditions, sacred tradition, along with reason and experience, inform Christian practice at a level subordinate to Sacred Scripture (see prima scriptura). [6] Among the Lutheran and Reformed traditions of Christianity, the Bible itself is the only final authority (see sola scriptura ), but tradition still plays an ...
Angel#Christian beliefs – Angels, in a variety of religions, are regarded as spirits. Disciple (Christianity) – In Christianity, the disciples were the students of Jesus during his ministry. Four Evangelists – In Christian tradition the Four Evangelists are Matthew, Mark, Luke, and John.
An abundance of cilia and centrioles has also been found in these Type 2 cells of the pineal gland. [7] Unique to the Type 2 is the presence of vacuoles containing 2 layers of membrane. [7] As Type 1 cells contain serotonin, Type 2 cells contain melatonin and are thought to have similar characteristics as endocrine and neuronal cells. [8]