This section is from the book "Anatomy Of The Arteries Of The Human Body", by John Hatch Power. Also available from Amazon: Anatomy of the Arteries of the Human Body, with the Descriptive Anatomy of the Heart.
The Dorsalis Pollicis advances to the interosseous space between the great and second toes, and divides into two branches, one of which passes under the extensor tendons of the great toe, sinks into the space between it and the second, passes obliquely across and in close contact with the under surface of the first metatarsal bone, and is lost on the inner surface of the great toe, anastomosing with the internal plantar artery: the other branch advances as far as the cleft between the great and second toes, and bifurcates to supply the external margin of the great toe and the internal margin of the second.
The Ramus Communicans sinks between the first and second metatarsal bones, and is continuous with the terminating branch of the external plantar artery.
 
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