Talk:BGDA Practical 12 - Birth: Difference between revisions
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{{Endocrine birth table}} | {{Endocrine birth table}} | ||
{{Birth stages table}} | |||
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{| | {| | ||
|- bgcolor="CEDFF2" | |- bgcolor="CEDFF2" | ||
! Labour Stages | ! width=100px|Labour Stages | ||
! Changes | ! width=100px|Changes | ||
! Time | ! width=150px|Time | ||
! Roles | ! Roles | ||
|- | |- | ||
| valign=top|Stage 1 | | valign=top|Stage 1 | ||
| dilatation | | dilatation | ||
| 7 | | valign=top|7 to 12 hours<br>longer for first child | ||
| uterine contractions 10 minutes apart, function to dilate cervix fetal membranes rupture releasing amnion | | uterine contractions 10 minutes apart, function to dilate cervix fetal membranes rupture releasing amnion | ||
|- bgcolor="F5FAFF" | |- bgcolor="F5FAFF" | ||
| valign=top|Stage 2 | | valign=top|Stage 2 | ||
| expulsion | | expulsion | ||
| 20 | | 20 to 50 minutes | ||
| uterine contractions push fetus through cervix and vagina, contractions 2-3 minutes apart | | uterine contractions push fetus through cervix and vagina, contractions 2-3 minutes apart | ||
|- | |- |
Latest revision as of 13:02, 2 June 2013
Practical Audio
BGD Cycle A 2010 Audio - Dr Mark Hill Monday 17th May 2010 3-5pm G2G4.
listen Part 6 | download (2.13 Mb MP3 18:36) |
Hormones | Roles |
---|---|
Progesterone |
|
Estrogens |
|
Oxytocin |
|
Prostaglandins |
|
Endocrine | Birth |
Labour Stages | Changes | Time | Roles |
---|---|---|---|
Stage 1 | Dilatation | 7 to 12 hours longer for first child |
Uterine contractions 10 minutes apart, function to dilate cervix fetal membranes rupture releasing amnion. |
Stage 2 | Expulsion | 20 to 50 minutes | Uterine contractions 2 to 3 minutes apart, function to push fetus through cervix and vagina. |
Stage 3 | Placental | 15 minutes | Uterine contractions following child delivery expel placenta. Haematoma separates placenta from uterine wall, separation occurs at spongy layer of decidua basalis. |
Stage 4 | Recovery | 2+ hours | Uterine contractions continue and myometrial contraction closes spiral arteries, also begins to reduce uterine volume. |
Labour Stages
Labour Stages | Changes | Time | Roles |
---|---|---|---|
Stage 1 | dilatation | 7 to 12 hours longer for first child |
uterine contractions 10 minutes apart, function to dilate cervix fetal membranes rupture releasing amnion |
Stage 2 | expulsion | 20 to 50 minutes | uterine contractions push fetus through cervix and vagina, contractions 2-3 minutes apart |
Stage 3 | placental | 15 minutes | following child delivery contractions continue to expel placenta. haematoma separates placenta from uterine wall, separation occurs at spongy layer of decidua basalis |
Stage 4 | recovery | 2+ hours | continued myometrial contraction closes spiral arteries |
Hormones | Roles |
---|---|
Progesterone |
|
Estrogens |
|
Oxytocin |
|
Prostaglandins |
|
Endocrine Development |
External Environment
- mainly shown in other species parturition occurs in peaceful undisturbed surroundings, stress may have an inhibitory effect on oxytocin release
- Most human births occur at night (peak at 3am) diurnal rhythm influence