Gestation, parturition, lactation,

Question 1

What hormones does the fetus release and what is the function.

Answer 1

prolactin from placenta to stimulate h2o across membrane.

fetal neuropyphysis - arg.vasotocin = vasopressin

Question 2

Describe maternal changes

Answer 2

O2, CO (30%) = high BP

BV, Pulmonar vent(40%)

Question 3

hypothalamic-pituitary-adrenal

system (ewe)

Answer 3

signal in ewe to signal parturition . adrenal and pituitary involved

Question 4

Give the processes of signaling parturition in ewe

Answer 4

`

Question 5

explain the events that lead to the degradation of the CL (ewe)

Answer 5

`

Question 6

Give functions of PGF2a in partition (ewe)

Answer 6

• DegradeCL
• Remove progesterone block
• increase contractions
• synthesize relaxin

Question 7

Progesterone affects in humans

Answer 7

• reduction in Prostaglandin synthesis
• reudction in Ca+ channels = no contraction
• reduction in ox R

Question 8

What is the Ferguson reflex

Answer 8

In humans, mechanical stimulation of the cervix causes
the release of oxytocin → Ferguson reflex, a
neuroendocrine reflex

Question 9

What stimulated prostaglandin release

Answer 9

Oxytocin

Question 10

Define Puerperium and the stages associated with it

Answer 10

-The period after parturition and before female can become pregnant again.
Stages:
1. expulsion of fetal membrane (placenta)
2.Endometrial repair (contractions)
3. Resumption of ovarian cycles
4. immune response to bacteria increased by E