Parturition

Question 1

Describe Stage I of parturition

Answer 1

Preparatory stage involving cervical dilation

Question 2

During Stage I the fetus is positioned in the birth canal via ___ contractions

Answer 2

Myometrial

Question 3

Describe Stage II of parturition

Answer 3

Time of hard labor and expulsion of the fetus

Question 4

Describe Stage III of parturition

Answer 4

Expulsion of the placental membranes and subsequent uterine involution

Question 5

(T/F) Dystocia is the major cause of cattle loss

Answer 5

True!

Question 6

(T/F) The most common cause of dystocia is from an oversized calf

Answer 6

True!

Question 7

What does presentation refer to?

What is it called when the head is first?

Answer 7

The direction of the calf

Head first

Question 8

It is crucial that the foal is born within # (time) of the beginning of Stage II

Answer 8

30 minutes

Question 9

Which hormone induces parturition in response to fetal stress

Answer 9

ACTH

Question 10

Fetal Cortisol induces the release of ___ and produces the enzymes needed to convert placental progesterone into ___

Answer 10

PGF 2alpha

Estradiol

Question 11

What does estradiol do during parturition?

Answer 11

It enhances lubrication of female tract and myometrial contractions
Enhances the receptors for PGF 2alpha and oxytocin

Question 12

(T/F) Retained placenta is often a side effect of induced parturition, therefore it should only be done in emergencies

Answer 12

True!