Powerpoint notes

• gestation (aka. pregnancy) 


  The time that the embryo or foetus is carried in the uterus (40 weeks)
• Partuition 


  the delivery of the foetus from the mother's body.
• Braxton Hicks 


  weak, irregular contractions which gradualy become more frequent before pregnancy.
• Relaxin 


  hormone that causes pelvis to soften
• Oxytocin (happy hormone) 


  hormone that increases response of uterus stimuli and strength contraction of muscles.
• in the preparation for pregnancy cervix...


  has softened, likely begun to open a little.
• in the preparation for pregnancy, baby's head...


  settles in the mother's pelvis, usually has one side pressed up to mother's bladder and other against her bowel.
• Duration of stage 1 of birth:

  8-9 hours
• Stage 1 of birth is also known as dilation of the cervix
• Events of Stage 1 of Pregnancy

  includes onset of labor until cervix is fully dialated.

  waves of contractions

  uterus pulling on the cervix and shortening it

  foetus moves deeper into the pelvis

  uterus, cervix and vagina form a single, curved passage, the birth canal

  
• Events of stage 2 of pregnancy 


  bursting of the amniotic membrane

  woman contracts her abdominal muscles

  head turns to face mother's back

  head becomes more visible

  once the head emerges, it turns sideways to face the mother's hips

  head position of baby acts as a wedge to force open the cervix/vagina and also allows baby to start breathing

  
• Stage 1 ends with...


  the complete dilation of the cervix
• Stage 2 ends with...


  baby is fully free from birth canal
• duration of stage 2

  20 mins - 2 hours
• stage 2 of pregnancy is also known as stage of expulsion
• duration of stage 2 of pregnancy

  5 mins - 1 hour
• Stage 3 of Pregnancy 


  also known as the after birth