The PCA pump and syringe will be connected to your IV. You may get the medicine in any of the following ways: You may have a PCA pump that will run only when you need pain relief. When you feel pain, you can push the button attached to the PCA pump. A small dose of pain medicine will be given through your IV. Your button may blink when you are able to get another dose from the pump. You may receive a small amount of pain medicine running through your IV all the time.
In geometry, the hexagonal prism is a prism with hexagonal base. This polyhedron has 8 faces, 18 edges, and 12 vertices. Since it has eight faces, it is an octahedron. However, the term octahedron is primarily used to refer to the regular octahedron, which has eight triangular faces.
There are eight vertices in a rectangular prism. Any prism is a three dimensional figure; it has two bases and is formed by rectangles connecting the edges of each base to each other. So in the case of a rectangular prism is a rectangle. Thus, the number of faces of any prism is the number of edges of the base + 2. Also, the number of vertices is just the number of vertices of the base shape, times two. A rectangular prism has eight vertices because the base (a rectangle) has four vertices. That times two is eight.