Key Point The majority of carbon dioxide produced by the active muscles is transported back to the lungs in the form of bicarbonate ions. Carbaminohaemoglobin CO2 transport also can occur when the gas binds with haemoglobin, forming a compound called Carbaminohaemoglobin.
Screenplay format first element: master headings. What is a master scene heading? In screenplay format, a master scene heading, also called primary slug line, is a one line of text in a screenplay that comes before the description of a scene. It gives a context for the whole scene.
âINT.â and âEXT.â are abbreviations. As such, they must each end in a period. The exception is when they are joined together as âINT/EXT.â (See below). Where the scene heading prefix âINT.â or âEXT.â is concerned, standard screenplay format calls for only one space, not two, after the period. Itâs customary to separate the elements in a scene heading with a single dash (or hyphen) flanked by single spaces.