http://www.nursing.upenn.edu/students/resources/HandbooksFormsPolicies/BSN%20Handbook%201%207%202016.pdf page 20 lists the requirements for the Penn nursing major. Out of a total of 40.5 credits, 29.5 are in the nursing major, 10 are in general education requirements, and 1 is a free elective. A sample four year schedule is listed on page 25.
Note that 40.5 credits is higher than the 32 to 36 credits needed to graduate in a major in Penn Arts and Sciences. Some of the Penn Engineering majors require 40 to 41 credits.