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Essential Question: What changes happen to mother and baby during prenatal development Prenatal – (pre) before birth (natal) Ovum – egg or female cell. Live 2-3 days Sperm – male cell. Can live up to 7 days Conception – fertilization; joining of male and female cells Fallopian Tubes –place of conception. Connects ovary to uterus Uterus – hollow, muscular organ; nourishes embryo before birth Zygote – first stage of fertilized egg, weeks 1-2 Embryo – second stage of development, weeks 3-8 Fetus – name of baby from weeks 9 – birth Amniotic sac and fluid – form around fetus as a cushion for protection Placenta – receives blood and oxygen from mother Umbilical cord – connects baby to placenta. Allows blood and oxygen to travel to baby. Trimester – a period of about 3 months DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER Size of a pin head Missed period Zygote travels down Enlarged breasts fallopian tubes Frequent urination Embryo attaches to uterus Internal organs form Heart begins to beat DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER Size about ¼ inch Breasts swell long Frequent urination Face, eyes, ears, Nausea and limbs form Bones begin to form At end of 8 weeks is called a fetus DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER Size about 1inch Breasts become long firmer, fuller, may ache. Nostril, mouth, lips, Nausea eyelids, teeth buds Fatigue form Frequent urination Fingers and toes may continue almost complete Uterus size of an orange All organs present May gain 2-4 though immature pounds DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER 3 inches long; 1 Appetite increases ounce Most discomforts Can suck thumb, usually gone swallow, hiccup and move around Facial features clearer Covered with fine downy hair called lanugo Heartbeat can be heard DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER 6 ½-7 inches long; 4-5 Enlarged ounces abdomen Lashes, brows and hair develop apparent Teeth continue to develop Slight fetal Organs maturing movements Becomes more active called A protective coating called quickening are vernix caseosa begins to felt form on skin DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER 8-10 inches; 8-12 Fetal ounces movements are Eyelids are visible strong and may be Lungs are filled visible with amniotic fluid Gained about Has started 10-12 pounds breathing motions Can hear mother talk or sing DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER 10-12 inches; 1 ½ Increased size to 2 pounds affects posture May be very active and then rest and be quiet Fingernails cover fingertips DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER 14-16 inches; 2 1/2 Uncomfortable from to 3 pounds increased size; Gains about half a shortness of breath pound per week Backache, fatigue, May react to loud leg cramps noises Kicks may disturb rest Moves to head down position Gained 18-20 pounds DEVELOPMENT OF THE BABY CHANGES IN THE MOTHER 17-18 inches; 5 to Lightening felt as 6 pounds fetus drops into Adds weight each pelvis; breathing week; smoothes out skin easier Crowded; moves Total weight gain less of 25-35 pounds Acquires antibodies False labor pains from the mother may be Descends into experienced pelvis; ready for birth Baby Mother Month 1 Month 1 • Fertilized egg travels and attaches to uterus • Size of a pin head Missed menstrual • Internal organs form period • Heart begins to beat Baby Mother Month 4 Month 4 • 3 inches long; 1 ounce • Appetite increases • Can suck thumb, • Most discomforts swallow, hiccup and usually gone move around Baby Mother Month 7 Month 7 •10-12 inches; 1 ½ to 2 pounds •May be very active Increased size and then rest and be affects posture quiet
"Fetal Development - SchoolRack"