Calls to the primary sponsors of that chamber's abortion bills were not returned Thursday, nor was a request for comment made to Greitens' office.
But proponents of even stricter regulations, including the governor, are hopeful the bill will be expanded when it gets to the House.
Republican Gov. Eric Greitens called the session, saying he was partly motivated by a federal judge's ruling striking down some state abortion regulations.
The governor was scheduled to lead a delegation to Europe next week, but scrapped the plan because lawmakers are in the midst of a second special session he called to address abortion-related laws. Bob Onder, R-Lake St. Louis, took a hard-line approach that would have guaranteed a filibuster and risked a forced vote that could shut down the Senate.
Now one Missouri lawmaker is back in the news for a Facebook Live video in which he beheads a chicken and rips its heart out - to announce his latest abortion bill.
Dueling rallies on both sides of the abortion issue were present at the Missouri Capitol this week.
"Now, we're going to be able to bring a steel mill and hundreds of quality jobs to the state of Missouri". The initial vote came after senators convened more than 10 hours later than originally planned because of prolonged negotiations between lawmakers. Andrew Koenig, a St. Louis County Republican, that included numerous provisions.
The legislation also would require the state's health department to review fetal tissue reports and compare them with the number of reported abortions - an effort by Republican lawmakers to ensure tissue is properly disposed of and not kept.
"The legislature can pass a bill, the governor can sign it, it can be challenged in court and defended and upheld", Sam Lee, a lobbyist for Campaign Life Missouri, recently told The Star.
Missouri's current attorney general, Republican Josh Hawley, staunchly opposes abortion.
Missouri senators early Thursday morning passed legislation to require new abortion restrictions, such as annual health inspections of clinics, and to overturn a St. Louis ordinance that bans discrimination based on the procedure. He says the policy could force pregnancy resource centers that oppose abortion to hire workers who support abortion rights. State inspection reports between 2009 and 2016 also showed more than 200 health and safety violations that endangered women's health. It also would provide stronger whistleblower protections for employees of abortion clinics and new requirements for pathologists who provide services to abortion clinics.
Alison Dreith, executive director of NARAL Pro-Choice Missouri, slammed lawmakers for waiting until after midnight to give the bill a vote.
"Bills that try to make it very hard for women to access that reproductive health option, which is her right to do, are unsafe", she said.
Greitens on Wednesday is leading an anti-abortion rally at the Capitol.