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Herophilos (/ h ɪ ˈ r ɒ f ɪ l ə s /; Ancient Greek: Ἡρόφιλος; 335–280 BC), sometimes Latinised Herophilus, was a Greek physician regarded as one of the earliest anatomists. Born in Chalcedon , he spent the majority of his life in Alexandria .
Herophilos in his dissections discovered the differences between nerves and blood vessels. [10] Nerves carried the pneuma or soul to animate the body and the vessels being related to nature. Following the lines tracks of the nerves through the body he saw that they all converge in the brain, and by Herophilus' reasoning the ventricles of the ...
[14] [15] In his attempt to understand the function of the gland, he traced the surrounding blood vessels from which he identified the great vein of the cerebellum, later called the vein of Galen. [4] [16] Failing to discover the function, he believed that the pineal gland was merely a structural support for the cerebral veins. [17]
Herophilus believed that the arteries carried a mixture of pneuma and blood, while Erasistratus believed that they solely carried pneuma. [33] Erasistratus is said to have natural philosophical views as compared to others during the time, paving the way for the teaching of methodologists in the field of medicine. [26]
The confluence of sinuses shows significant variation. [1] Most commonly, there is a continuous connection between all of the sinuses. [1] [2] A very common variant is the superior sagittal sinus only draining into the right transverse sinus - more rarely, it may also only drain into the left transverse sinus.
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).
Atherosclerosis is characterized by the build-up of plaque inside your blood vessels. It can lead to stenosis, which is a narrowing of your artery walls. Plaque is a fatty substance made up of:
William Harvey (1 April 1578 – 3 June 1657) [1] was an English physician who made influential contributions to anatomy and physiology. [2] He was the first known physician to describe completely, and in detail, pulmonary and systemic circulation as well as the specific process of blood being pumped to the brain and the rest of the body by the heart (though earlier writers, such as Realdo ...