The lieutenant governor has the briefest job description in N.C.
The Lieutenant Governor shall be President of the Senate, but shall have no vote unless the Senate is equally divided. He shall perform such additional duties as the General Assembly or the Governor may assign to him. He shall receive the compensation and allowances prescribed by law.
That's about it.
To be fair, a few other sections of the constitution talk about succession, note that the office has the same qualifications and terms as the governor, and describe the duties of the Council of State.
But the office itself gets just 47 words. For comparison's sake, that's six words shorter than the preamble to the U.S. Constitution.