By blocking the stimulation by these nerves, atenolol reduces the heart rate and is useful in treating abnormally rapid heart rhythms. Atenolol also reduces the force of contraction of heart muscle and lowers blood pressure.
As far a degree, a two or four year degree in finance would be beneficial; however you still would need to go to an approved school and get the license. As a mortgage broker, I suggest getting your license first and get hired with a company prior to committing yourself to a degree; see what the job is all about.
There are no hard-and-fast requirements for becoming a mortgage broker, but you will need some type of training. Many brokers are former loan officers who decided to strike out on their own, or real estate agents who decided they wanted to try the financial side of things. A background in sales is often helpful.