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.
You have to set up the IRA separately for your non-working spouse. This means that the IRA is set up using your partnerâs Social Security Number, and name. With this set up, you can contribute $5,000 for your IRA and $5,000 for your spouseâs, resulting in a yearly contribution of $10,000.(Remember that contribution limits may rise in future years, along with inflation.).ou are also subject to the income phase-outs that come with contributions to a Roth IRA. Required minimum withdrawals for Traditional IRAs start at age 70 1/2, and you have to be age 59 1/2 to begin taking non-qualified distributions penalty-free from your Roth.