cartilage prototypes provides position and support to the fetus
first 2 weeks of fetal life:
ossification of cartilage into bones begins and continues all through fetal life and into adulthood; carpals, tarsals, and sternal bones do not ossify until birth
12th week:
fetus can be seen moving through the use of an ultrasound;
11th week:
can be felt by the mother only on the 16th-20th weeks
QUICKENING: