Structure and function of the dermis in general Structure; deep part of skin; connective tissue composed of two layers function; is responsible for the structural strength and flexibility of the skin; the epidermis exchanges gases nutrients and waste products with blood vessels in the dermis
My new answer: Usain Bolt acheived a top speed of 27.28 mph or 43.90 kph in travellng the 2 fastest consecutive 60-70 & 70-80, 10m splits ever of .82 seconds. We'll leave out 4x100m splits as I don't have them for Team Jamaica's WR from Beijing.
15 February 2001. The fastest recorded instantaneous velocity achieved by a human was supposedly by Donovan Bailey, who set the World Record in the 100 m (9.84 s). He was clocked at 12.1 m/s, although this figure is perhaps a bit rough (recorded by a radar gun).