Talk:BGDA Practical 12 - Birth: Difference between revisions
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{{Endocrine birth table}} | {{Endocrine birth table}} | ||
===Labour Stages=== | |||
{| | |||
|- bgcolor="CEDFF2" | |||
! Labour Stages | |||
! Changes | |||
! Roles | |||
|- | |||
| valign=top|Stage 1 | |||
| dilatation | |||
| uterine contractions 10 minutes apart, function to dilate cervix fetal membranes rupture releasing amnion, 7 -12 hours (longer for first child) | |||
|- bgcolor="F5FAFF" | |||
| valign=top|Stage 2 | |||
| expulsion | |||
| uterine contractions push fetus through cervix and vagina, contractions 2-3 minutes apart, 20 - 50 minutes | |||
|- | |||
| Stage 3 | |||
| placental | |||
| following child delivery contractions continue to expel placenta. haematoma separates placenta from uterine wall, separation occurs at spongy layer of [[D#decidua basalis|decidua basalis]], 15 minutes | |||
|- bgcolor="F5FAFF" | |||
| valign=top Stage 4 | |||
| recovery | |||
| continued myometrial contraction closes spiral arteries, 2+ hours | |||
|} | |||
{| | {| |
Revision as of 12:55, 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
Labour Stages | Changes | Roles |
---|---|---|
Stage 1 | dilatation | uterine contractions 10 minutes apart, function to dilate cervix fetal membranes rupture releasing amnion, 7 -12 hours (longer for first child) |
Stage 2 | expulsion | uterine contractions push fetus through cervix and vagina, contractions 2-3 minutes apart, 20 - 50 minutes |
Stage 3 | placental | following child delivery contractions continue to expel placenta. haematoma separates placenta from uterine wall, separation occurs at spongy layer of decidua basalis, 15 minutes |
valign=top Stage 4 | recovery | continued myometrial contraction closes spiral arteries, 2+ hours |
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