Some muscles (skeletal muscles) will not contract unless stimulated by neurons; other muscles (smooth & cardiac) will contract without nervous stimulation but their contraction can be influenced by the nervous system. Thus, the nervous and muscle systems are closely interconnected.
A Roth IRA is an individual retirement plan that is subject to rules that would apply to a traditional IRA, but with some exceptions [source: IRS ]. Contributions are not tax deductible and qualified distributions are tax free. Here are some of the things you must consider when setting up a Roth IRA account:1  The account must be designated as a Roth IRA when it's opened. 2  The account can be opened at any time. 3  Contributions can be made at any age.ontributions are not tax deductible and qualified distributions are tax free. Here are some of the things you must consider when setting up a Roth IRA account: 1  The account must be designated as a Roth IRA when it's opened. 2  The account can be opened at any time.
Roth IRA Withdrawal Rules. The whole point of an IRA (Roth or otherwise) is to save for retirement. Unfortunately, things donât always go as planned, and you may find yourself needing to withdraw money from your Roth IRA before age 59Â½.oth IRA Withdrawal Rules. The whole point of an IRA (Roth or otherwise) is to save for retirement. Unfortunately, things donât always go as planned, and you may find yourself needing to withdraw money from your Roth IRA before age 59Â½.