Three Trimesters of Pregnancy (Second Trimester (-Around 18 to 20 weeks, …
Three Trimesters of Pregnancy
Development of all tissues, organs, and organ systems begin.
Very vulnerable to the effects of alcohol, tobacco, drugs, and other environmental influences.
A lack of certain essential nutrients cause irreversible damage to the developing embryo.
Mother might not realize that she is pregnant because she has not yet missed a menstrual period.
Embryo is called a fetus
All of the organ systems have begun to form.
Fetus can move its arms, fingers, and toes and make facial expressions. Fingerprints also are present.
The fetus continues to grow at a rapid rate.
Fat accumulates under the skin to provide insulation for the fetus once it is born.
New nerve cells in the brain are forming at a rate of 250,000 cells per minute.
The fetus now might respond to sounds in the environment, such as music or the sound of its mother’s voice.
Protein intake by the mother is important during this time. Protein is essential for the rapid amount of brain growth that occurs.
-Around 18 to 20 weeks
-Capable of sucking its thumb
-Heartbeat might be heard using a stethoscope
-Can develop the hiccups
-The mother might feel light kicks
-Embryo eyes will open during this period
-Lungs have not developed fully
-Immune system is not fully functional