This is where the stomach empties partially digested food into the intestine, and the pancreas releases digestive enzymes into these contents. The central section of the pancreas is called the neck or body. The thin end is called the tail and extends to the left side.
for the experiment to be accurate, there is one independent variable (the thing you change), and one dependant variable (the thing changed by the independent variable and what â¦ you measure).
variable. Then you can change the value of the macro variable in the %LET statement, and SAS will repeat the new value throughout your program. The general form a %LET statement is %LET macro-variable-name = value; where macro-variable-name is a name you make up following the standard rules for SAS names (32 characters or fewer in