Chapter 24- Reproductive at Southern Alberta Institute Of Technology | Flashcards & Summaries

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Expulsion of baby

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second stage of labor, head normally appears first (crowning) and once emerged, mucous is cleared from mouth and nose and umbilical cord is clamped and cut

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Dilation of cervix

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first and longest stage of labor, longer in primipara (first time birth giver) than multipara (previously given birth). Cervical effacement is progressive thinning of cervical walls and cervical dilation is progressive widening of cervix to allow for passage of fetus

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development of mammary glands

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  • high levels of estrogen though out pregnancy stimulate growth of ducts through out mammary glands
  • high levels of progesterone stimulate development of acini at ends of ducts
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Explain how fertilization occurs

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  1. acrosomes on the sperms head release enzymes to break down the cells and zona pellucida 
  2. a path is formed and one sperm makes its way to the egg, this changes the egg so no other sperm can enter
  3. Sperm's tail degenerates and releases its nucleus which fuses with the egg to produce a 46 chromosome zygote
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Amnion

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transparent sac filled with fluid, that envelopes the embryo. Fluid protects the embryo and later the embryo will breathe and swallow the fluid.

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Chroion

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outermost extraembryonic membrane, finger like projections penetrate the uterus. In the area of umbilical cords, chroion forms what will become the fetal side of the of the placenta

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Delivery of placenta

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final stage and involving delivery of the after birth (placenta, amnion and fetal membranes), contraction help seal any blood vessels that may be bleeding

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TESTE DEIN WISSEN

lactation

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  1. suckling neonate (baby) sends nerve impulses to anterior and posterior pituitary gland
  2. anterior secretes prolactin causing milk production
  3. the posterior secretes oxytocin which causes milk secretion
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TESTE DEIN WISSEN

Embryonic stage

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  1. 16 days after conception, blastocyst becomes an embryo
  2. germ layer differentiates and becomes organs and organ systems
  3. accessory organs aid the developing embryo
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TESTE DEIN WISSEN

Fetal shunts

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TESTE DEIN WISSEN

In the fetal stage, the lungs and liver don't need as much blood since they are not yet working, 3 shunts help bypass these organs;

  1. ductus venosus- shunts blood around liver
  2. foramen ovale- shunts blood directly from right atrium to left, bypassing the lungs
  3. ductus arteriosus- shunts blood from right ventricle to pulmonary artery, bypassing the lungs
Lösung ausblenden
TESTE DEIN WISSEN

Lanugo

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fine hair that covers the body which is then covered by a white, cheese like substance called vernix caseosa, which protects the skin from amniotic fluid

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TESTE DEIN WISSEN

Epistotomy

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a surgical incision sometimes made between vagina and anus to enlarge the vaginal opening during birth

Lösung ausblenden
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Q:

Expulsion of baby

A:

second stage of labor, head normally appears first (crowning) and once emerged, mucous is cleared from mouth and nose and umbilical cord is clamped and cut

Q:

Dilation of cervix

A:

first and longest stage of labor, longer in primipara (first time birth giver) than multipara (previously given birth). Cervical effacement is progressive thinning of cervical walls and cervical dilation is progressive widening of cervix to allow for passage of fetus

Q:

development of mammary glands

A:
  • high levels of estrogen though out pregnancy stimulate growth of ducts through out mammary glands
  • high levels of progesterone stimulate development of acini at ends of ducts
Q:

Explain how fertilization occurs

A:
  1. acrosomes on the sperms head release enzymes to break down the cells and zona pellucida 
  2. a path is formed and one sperm makes its way to the egg, this changes the egg so no other sperm can enter
  3. Sperm's tail degenerates and releases its nucleus which fuses with the egg to produce a 46 chromosome zygote
Q:

Amnion

A:

transparent sac filled with fluid, that envelopes the embryo. Fluid protects the embryo and later the embryo will breathe and swallow the fluid.

Mehr Karteikarten anzeigen
Q:

Chroion

A:

outermost extraembryonic membrane, finger like projections penetrate the uterus. In the area of umbilical cords, chroion forms what will become the fetal side of the of the placenta

Q:

Delivery of placenta

A:

final stage and involving delivery of the after birth (placenta, amnion and fetal membranes), contraction help seal any blood vessels that may be bleeding

Q:

lactation

A:
  1. suckling neonate (baby) sends nerve impulses to anterior and posterior pituitary gland
  2. anterior secretes prolactin causing milk production
  3. the posterior secretes oxytocin which causes milk secretion
Q:

Embryonic stage

A:
  1. 16 days after conception, blastocyst becomes an embryo
  2. germ layer differentiates and becomes organs and organ systems
  3. accessory organs aid the developing embryo
Q:

Fetal shunts

A:

In the fetal stage, the lungs and liver don't need as much blood since they are not yet working, 3 shunts help bypass these organs;

  1. ductus venosus- shunts blood around liver
  2. foramen ovale- shunts blood directly from right atrium to left, bypassing the lungs
  3. ductus arteriosus- shunts blood from right ventricle to pulmonary artery, bypassing the lungs
Q:

Lanugo

A:

fine hair that covers the body which is then covered by a white, cheese like substance called vernix caseosa, which protects the skin from amniotic fluid

Q:

Epistotomy

A:

a surgical incision sometimes made between vagina and anus to enlarge the vaginal opening during birth

Chapter 24- Reproductive

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