The umbilical cord connects a baby in the womb to its mother. It runs from an opening in your babyâs stomach to the placenta in the womb. The average cord is about 50cm (20 inches) long. What does the umbilical cord do? The umbilical cord carries oxygen and nutrients from the placenta into your babyâs bloodstream. The umbilical cord is made up of: one vein that carries blood rich in oxygen and nutrients from you to your baby two arteries that return deoxygenated blood and waste products, such as carbon dioxide, from your baby back to the placenta
In mathematics, a hyperbola (plural hyperbolas or hyperbolae) is a type of smooth curve, lying in a plane, defined by its geometric properties or by equations for which it is the solution set. hyperbola may be defined equivalently as the locus of points where the absolute value of the difference of the distances to the two foci is a constant equal to 2 a, the distance between its two vertices.
One exception to this is spherical trigonometry, the study of triangles on spheres, surfaces of constant positive curvature, in elliptic geometry (a fundamental part of astronomy and navigation). Trigonometry on surfaces of negative curvature is part of hyperbolic geometry.