According to Stanford Children’s Health there are a couple newborn reflexes that are already being rehearsed in-utero:

• Root reflex: it helps the baby find the breast or the bottle immediately after birth. When something touches the baby’s cheek, they will turn their head in the direction of the touch, searching for a food source, and begin sucking.
• Suck reflex: this is the baby’s response to anything that touches the roof of their mouth. It’s because of this reflex that babies bring their feet to their mouth and start sucking a toe.
• Grasp reflex: when you touch the palm of a baby’s hand, the baby responds by closing their hand in a grasp around your finger.
• Step reflex: when a baby is held upright with their feet touching a solid surface, they will start taking steps as if dancing.

By week 32 of your pregnancy, your baby will have developed these reflexes that will be very handy once they are born. In the ultrasound you might even catch your little baby sucking their thumb, which will bring an “adorableness-overload” reflex in you, but that’s a topic for another blog post!