Health Benefits. While the money savings is a good perk, sleeping on natural latex is even better. There are many âhealthy side-effectsâ that go with sleeping on natural latex foam. Pure, organic latex is inherently hypoallergenic, because it is not a man-made product, or a derivative of petrochemicals.
According to the Oxford English Dictionary, the earliest appearance of the phrase dead as a doornail appears in William Langland's 14th century religious allegorical poem, Piers Plowman. The relevant line in the original poem stated, Fey withouten fait is febelore Ã¾en nouÈt, And ded as a dore-nayl..
The nail sinus (sinus unguis) is where the nail root is; i.e. the base of the nail underneath the skin. It originates from the actively growing tissue below, the matrix. The nail plate (corpus unguis) is the hard part of the nail, made of translucent keratin protein. Several layers of dead, compacted cells cause the nail to be strong but flexible. Its (transverse) shape is determined by the form of the underlying bone. In common usage, the word nail often refers to this part only.