Maternal Recognition of Pregnancy

Question 1

Luteolysis

Answer 1

Functional lifespan of the CL is terminated in the non-fertile cycle

Question 2

Formation of the CL

Answer 2

Formed from granulosa and theca cells of the ruptured follicle following ovulation.

Question 3

Granulosa cells post luteinization

Answer 3

Large luteal cells

Question 4

Theca cells post luteinization

Answer 4

Small luteal cells

Question 5

CL main function

Answer 5

Secrete hormone progesterone under the control of the pituitary peptide hormone, LH

Question 6

Conceptus

Answer 6

An early embryo. Fetus and placenta combines

Question 7

Cow MRP factor

Answer 7

bIFN tau

Question 8

Ewe MRP factor

Answer 8

oIFN tau

Question 9

Sow MRP factor

Answer 9

Estradiol-17b

Question 10

Mare MRP factor

Answer 10

3 proteins/unknown

Question 11

Queen MRP factor

Answer 11

PRL?

Question 12

Bitch MRP factor

Answer 12

None needed

Question 13

Endometrial cups

Answer 13

Source of eCG and a placenta-associated structure. Increase immunological tolerance of the mare to protect the fetus.

Question 14

Formation of eCG

Answer 14

Alpha and Beta chain

Question 15

Woman luteal regression

Answer 15

14

Question 16

Cow luteal regression

Answer 16

18

Question 17

Ewe luteal regression

Answer 17

14

Question 18

Sow luteal regression

Answer 18

16

Question 19

Mare luteal regression

Answer 19

15

Question 20

Luteal Regression Feedback Loop

Answer 20

Positive feedback related to the oxytocin amount

Question 21

What does CL progesterone do?

Answer 21

Converts proliferative endometrium to secretory endometrium. Prohibits spontaneous smooth muscle contractions.

Question 22

Definition of eCG

Answer 22

Equine chorionic gonadotropin

Question 23

eCG vs LH

Answer 23

eCH is a highly glycosylated form of LH with a long half life

Question 24

Half life of eCG

Answer 24

6 days

Question 25

Why don’t bitches need a MRP factor?

Answer 25

Because the CL lifespan is so long