Not every relation is a function. But every function is a relation. Function is just a part of relation.
The cubic function.
Range
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
The Mandelbrot graph is generated iteratively and so is a function of a function of a function ... and in that sense it is a composite function.
Serosa is a serous membrane that secretes serous fluid, adventitia does not.
Retroperitoneal organs have only an adventitia. Peritoneal organs have only a serosa.
Serosa is a serous membrane that secretes serous fluid, adventitia does not
Adventitia
The Tunica Externa/ Adventitia.
tunica mucosa, muscularis, adventitia
Tunica externa
Duodenum
the adventitia, the media and the intima
tunica adventitia
The adventitia is the outermost or most superficial layer of the esophagus.
Tunica Adventitia. Tunica media, Tunica intima