Atto Tigri (22 May 1813 – 1875) was an Italian

anatomist Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its ...

born in

Pistoia Pistoia (, is a city and ''comune'' in the Italian region of Tuscany, the capital of a province of the same name, located about west and north of Florence and is crossed by the Ombrone Pistoiese, a tributary of the River Arno. It is a typi ...

. He studied medicine in

and at the

University of Pisa The University of Pisa ( it, Università di Pisa, UniPi), officially founded in 1343, is one of the oldest universities in Europe. History The Origins The University of Pisa was officially founded in 1343, although various scholars place ...

, where he became an assistant to

Filippo Civinini Filippo Civinini (20 September 1805 – 11 May 1844) was an Italian anatomist from Pistoia. He is remembered for contributions made in the field of osteology, in particular the cranium. He studied medicine in Pistoia and Pisa, where in 1825 he e ...

(1805–1844). Later he was a professor of human and

comparative anatomy Comparative anatomy is the study of similarities and differences in the anatomy of different species. It is closely related to evolutionary biology and phylogeny (the evolution of species). The science began in the classical era, continuing in t ...

at the

University of Siena The University of Siena ( it, Università degli Studi di Siena, abbreviation: UNISI) in Siena, Tuscany, is one of the oldest and first publicly funded universities in Italy. Originally called ''Studium Senese'', the institution was founded in 1240 ...

. In the late 1840s, Tigri is credited for providing the first comprehensive description of the reticular tissue of the

spleen The spleen is an organ found in almost all vertebrates. Similar in structure to a large lymph node, it acts primarily as a blood filter. The word spleen comes .

, which he called ''trama microscopica''. He also did extensive research on the circulation of blood in the spleen. In a treatise titled ''Nuova Disposizione dell' Apparecchio Vascolare Sanguigno della Milza Umana'', he provided an early discussion of

tuberculosis Tuberculosis (TB) is an infectious disease usually caused by '' Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can also affect other parts of the body. Most infections show no symptoms, in ...

and

vibrio cholerae ''Vibrio cholerae'' is a species of Gram-negative, facultative anaerobe and comma-shaped bacteria. The bacteria naturally live in brackish or saltwater where they attach themselves easily to the chitin-containing shells of crabs, shrimps, and oth ...

Selected writings

* ''Nuova Disposizione dell' Apparecchio Vascolare Sanguigno della Milza Umana'' (1847) * ''Della Funzione della Milza'' (1849)

References

Short Biography of Atto Tigri
Italian anatomists 1813 births 1875 deaths University of Pisa alumni Academic staff of the University of Siena People from Pistoia {{italy-med-bio-stub