==Works and Theories==
George Ent’s significance lies mainly in his contributions to the works of others, particularly his critiques. He is known as one of the closest friends and first defenders of [[William Harvey]]. Ent’s best known theories build on Harvey’s work, while the rest of Ent’s work spans a wide spectrum of knowledge.
===''Apologia pro circulatione sanguinis''===
Translation: ''Defense on Behalf of the Circulation of the Blood''
Written in 1641, the ''Apologia pro circulatione sanguinis'', Ent’s most significant work on [[anatomy]], defends the theories of William
Harvey’s book '' De motu cordis'' (''On the Movement of the Heart''), directly responding to the criticism of [[Emilius Parisianus]]. Ent’s personal theories, not drawn from Harvey’s, suggest that a “nutritive fluid” nourishes the body’s [[nervous system]].
In addition to Harvey’s work, Ent references both ancient and contemporary sources, in the [[humanist]] tradition often used by educated writers at the time. Ent particularly differs Harvey in the Apologia’s use of [[John Mayow]]’s theories on [[innate heat]] and [[respiration]].
The ''Apologia'' is considered significant both for its position as one of the first works in defense of William Harvey and on its own merits.
===''Sive animadversiones in Malachias Thrustoni''===