Presentation Transcript
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