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This in wiki numnum ohhh I like wiki saddly you can edit anything thumb Naaaneee For other uses, see Thumb (disambiguation). Not to be confused with Thumbs!. Thumb Sobo 1909 130.png Bones of the thumb, visible at far left Details Artery	Princeps pollicis artery Vein	Dorsal venous network of hand Nerve	Dorsal digital nerves of radial nerve, proper palmar digital nerves of median nerve Lymph	Infraclavicular lymph nodes[1] Identifiers Latin	pollex digitus I manus digitus primus manus MeSH	D013933 TA	A01.1.00.053 FMA	24938 Anatomical terminology [edit on Wikidata] The thumb is the first digit (finger) of the hand. When a person is standing in the medical anatomical position (where the palm is facing to the front), the thumb is the outermost digit. The Medical Latin English noun for thumb is pollex (compare hallux for big toe), and the corresponding adjective for thumb is pollical.

The very first digit of the hand

Contents 1	Definition 1.1	Thumb and fingers 2	Opposition and apposition 2.1	Humans 2.2	Other primates 2.3	Other placental mammals 2.4	Marsupials 2.5	Reptiles 2.5.1	Dinosaurs 2.6	Birds 2.7	Amphibians 3	Human anatomy 3.1	Skeleton