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.
1 For regular IRAs, you lose the ability to make contributions in the year you turn age 70Â½. 2  Not so for Roth IRAs. 3  If you meet the other requirements, you can set up a brand new Roth IRA at age 85 and begin saving for your âretirement.â Thereâs also no lower age limit. 4  A minor can set up a Roth IRA and contribute to it.or each year you contribute to a Roth IRA, you (or your spouse, if you file jointly) must have compensation or alimony income. If you donât have compensation or alimony income you canât contribute, even if you have other types of income.