A natural or applied line on a stone from which all leveling and plumbing is measured; an edge at the intersection of two planes; the ridge between adjoining flutes on a classical ...
The soft blood-forming tissue that fills the cavities of bones and contains fat and immature and mature blood cells, including white blood cells, red blood cells and platelets.
The base of the brain, which is formed by the enlarged top of the spinal cord. This part of the brain directly controls breathing, blood flow and other essential functions.
The optic nerve connects the eye to the brain. It carries the impulses formed by the retina, the nerve layer that lines the back of the eye and senses light and creates impulses. ...
A long, green, cylinder-shaped member of the gourd family with edible seeds surrounded by mild, crisp flesh. Used for making pickles and usually eaten ...