It means that you don't really respond to outside stimulus with very much emotion or with the same behaviorisms that most other people would in the same situation. Let me try to give you an example. Say someone tells you that the sky is blue. Normal affect would be baseline, meaning your usual facial expression.
The fetusâ heart begins to beat at 5 weeks gestation, at around 80-85 beats per minute. This rate increases about 3 beats per minute per day during the first month. When the fetus heart is first developed it resembles that of a tube. As the fetus begins to grow, so does the heart. Due to lack of room, that tube begins to bend and twist, beginning to take on the shape of a normal human heart.
Hearing the Fetal Heartbeat. Doctors use several different methods to listen to the fetal heartbeat. About 3 weeks, one day after fertilization, when the heart first begins to beat, the sound of the little heart is too soft to hear. Very soon thereafter, they can see the motion using ultrasound technology. A doctor's stethoscope is not sensitive enough to hear the embryo's heart beating.