PREGNANCY

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Published on January 28, 2008

Author: Diana

Source: authorstream.com

Pregnancy:  Pregnancy By Cheri Scheer Objectives:  Objectives Science 7-11-c Students will explain the structures of the human reproductivie system. Explaining the differences in trimesters. Curriculum PREGNANCY:  PREGNANCY PERIOD DURING WHICH THE BABY DEVELOPS IN THE UTERUS, NORMALLY 40 WEEKS CONCEPTION:  CONCEPTION OCCURS AS A RESULT OF INTERCOURSE BEGINNING OF PREGNANCY FERTILIZATION:  FERTILIZATION UNION OF A SPERM AND OVUM SEMEN IS DEPOSITED IN WOMAN’S VAGINA, SWIMS UP THROUGH THE CERVIX, THROUGH THE UTERUS, AND INTO THE FALLOPIAN TUBE THIS SWIM TAKES SEVERAL HOURS IF OVUM IS PRESENT, FERTILIZATION MAY OCCUR SPERM AND OVUM HAVE UNITED :  SPERM AND OVUM HAVE UNITED THE MEMBRANE ON THE OUTSIDE OF THE OVUM CHANGES AND DOESN’T LET OTHER SPERM ENTER THE OVUM MOVES DOWN INTO THE UTERUS AND IMPLANTS INTO THE UTERUS LINING.:  THE OVUM MOVES DOWN INTO THE UTERUS AND IMPLANTS INTO THE UTERUS LINING. KNOWN AS EMBRYO FOR THREE MONTHS KNOWN AS FETUS AFTER 3 MONTHS FIRST TRIMESTER:  FIRST TRIMESTER 4 WEEKS SHAPE OF HEAD DEVELOPS BRAIN FORMS FIRST HEARTBEATS 6 WEEKS - ABOUT 1 INCH LONG EARS & EYES START TO FORM ARMS & LEGS APPEAR FIRST TRIMESTER:  FIRST TRIMESTER 8 WEEKS - 2 INCHES LONG RECOGNIZABLE HUMAN KIDNEYS WORKING FINGER & TOES DEVELOP PLACENTA & UMBILICAL CORD DEVELOP 12 WEEKS HEAD IS LARGE VS. BODY SEX OF CHILD CAN BE DETERMINED SECOND TRIMESTER:  SECOND TRIMESTER 16 WEEKS HAIR,EYEBROWS & EYELASHES APPEAR EYES SHUT SKIN COVERED IN FINE HAIR. 20 WEEKS - 8 INCHES LONG FINGERNAILS MOTHER FEELS MOVEMENT SUCKS THUMB 24 WEEKS - ABOUT 1.5 POUNDS CAN HEAR SOUNDS LOOKS LIKE A BABY THIRD TRIMESTER:  THIRD TRIMESTER 28 WEEKS EYELIDS OPEN MOVES LIMBS SKIN COVERED IN YELLOW, WATER-RESISTANT SUBSTANCE 32 WEEKS- 5 POUNDS SKIN HEALTHY COLOR LUNGS MATURING LONG FINGERNAILS 36 WEEKS - 7 POUNDS TURNS HEAD DOWN TO ENGAGE FOR BIRTH CHILDBIRTH:  CHILDBIRTH DELIVERY AND LABOR TAKES PLACE IN THREE STAGES LABOR:  LABOR WATER BREAKS WATER FROM SAC OF FLUIDS FETUS HAS BEEN IN FOR PROTECTION CONTRACTIONS INVOLUNTARY MUSCLE MOVEMENT BY UTERUS USUALLY ARE ABOUT 30 SECONDS LONG EVERY 10-15 MIN IN EARLY LABOR BECOME STRONGER AND LAST 1 TO 2 MINUTES EVERY 2 MINUTES IN LATER LABOR FORCES THE BABY’S HEAD AGAINST THE CERVIX CAUSING IT TO DILATE AND EFACE CERVIX MUST DILATE TO 10 CM DELIVERY:  DELIVERY CERVIX IS COMPLETLY DILATED AND BABY PASSES THROUGH THE BIRTH CANAL TAKES 20 MINUTES TO TWO HOURS (PUSHING) DELIVERY OF AFTERBIRTH:  DELIVERY OF AFTERBIRTH PLACENTA, AMNIOTIC SAC, AND UMBILICAL CORD ARE EXPELLED FROM BODY TAKES ABOUT 10-20 MINUTES

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