Is there a way to speak "Send" in order to send an SMS? I know I can pull up my SMS app and press the microphone to activate speech. I speak my message, but then I need to press the "send" button to actually send my message.

Is there a way to activate the send function by saying a keyword instead of pressing the button?

Coming from an iPhone where Siri does most of this for me, basically I can say 


  Tell my wife, I'm running a bit late.


Siri responds


  Here's your message to wife's name, would you like me to send your message?


I say


  Yes


and off it goes.

I'm looking for something similar in Android.
With Google Now/Voice Actions I don't think there's any way to do this. Some actions will happen automatically after a short delay ("note to self..." is one I know offhand; there may be others), but text messaging requires you to actually press the "Send" button on the card that pops up.

However, you could try a third-party app for these specific functions that you'd like to be completely hands-free. Dragon works a bit more closely to Siri, acting in a conversational manner, and will prompt you for a "Yes/No" to send a message in a very similar fashion. Skyvi is another option you could try, which will send text messages automatically after a 5 second delay (during which time you can press a "Cancel" button to stop the sending).