Characteristics of the Unborn Child
20 – 22 Weeks Post-LMP
18 – 20 Weeks Post-Conception
In Oklahoma, an abortion cannot be performed on you if you are 20 weeks from conception or more, unless, you have a condition which so complicates your medical condition as to necessitate abortion of your pregnancy to avert your death or to avert serious risk of substantial and irreversible physical impairment of a major bodily function. When an abortion is to be performed on a woman twenty (20) weeks or more pregnant, the physician shall terminate the pregnancy in the manner which, provides the best opportunity for the unborn child to survive, unless termination of the pregnancy in that manner would pose a greater risk either of the death of the pregnant woman or of the substantial and irreversible physical impairment of a major bodily function of the woman, which does not include psychological or emotional conditions (Title 63 O.S § 1-745.5).
Nearly all the organs and structures of the fetus have been formed.
At 21 weeks, breathing patterns, body movements, and the heart rate begin to follow daily cycles called circadian rhythms.
By 22 weeks the sense of hearing begins to function and the fetus may respond to sound. All skin layers and structures are complete.
The 22-week fetus weighs slightly less than 1 pound and measures about 11 inches.