hormones

Question 1

prostaglandin synthesis and function

Answer 1

synthesised from arachidonic acid
important role in ovulation , parturition , luteolysis

Question 2

when is prostaglandin f2 alpha produced and from where and what does it do

Answer 2

if there is no pregnancy - uterine pgf2a is secreted from the endometrium this causes luteolysis of the corpus luteum causing decrease in progesterone allowing increase in oestrodiol from ovulatory follicle

Question 3

What does prolactin do in the luteal phase of the bitch ?

Answer 3

-supports cl as the principal luteotrophic
-from day 21 progesterone starts to decline so
-this stim prolactin which supports the CL and maintains progesterone ( however this still decline )

Question 4

what’s progesterone’s func ?

Answer 4

-stim production of histotroph and uterine milk proteins
-supress myometrial contractions
-stimulate mammary gland development

Question 5

relaxin

Answer 5

-softens connective tissue for growth of foetus
-relaxation of the pelvic ligament
- parturition ( stimulated pgf)