parturition

Question 1

The physiologic process by which the pregnant uterus delivers the fetus and placenta from the maternal animal

Answer 1

parturition

Question 2

stimulates muscle contraction

Answer 2

oxytocin

Question 3

inhibits P4 which promotes contraction

Answer 3

cortisol

Question 4

cow symptom of approaching parturition

____ (4 months before parturition in heifers and 1-2 weeks before parturition in cows)
Vaginal Discharge (_ months)
Relaxed pelvic ligaments / ___(24-48 hours);
Anorexia

Answer 4

Udder enlargement
7
raised tail head

Question 5

udder devt begins in __ to __ weeks in mares

Answer 5

2-6

Question 6

__ of teats happens 2-6 days before foaling in mares

Answer 6

waxing

Question 7

relaxation in the pelvic region occurs progressively during the last 7-14 days of gestation

what animal

Answer 7

mare

Question 8

waxing happens in what animal

Answer 8

mares

Question 9

Separate herself from the flock shortly before labor begins happens to which animal species:

Answer 9

ewe, doe, queen [secluded]

Question 10

bitch sign of near parturition

Answer 10

Temperature decreases by around 1°C the 1 or 2 days prior to whelping (due to low progesterone levels)
restlessness; decreased appetite;
produces a mild clear vaginal discharge 2-3 days prior to whelping;
have mild vomiting and diarrhea within a day or two of whelping

Question 11

stages of parturition

Answer 11

Dilation of cervix
expulsion of fetus
expulsion of placenta

Question 12

first stage of labor

Answer 12

Dilation of cervix

Question 13

second stage of labor

Answer 13

expulsion of fetus

Question 14

third stage of labor

Answer 14

expulsion of placenta

Question 15

changes are visibly externally in first stage of labor t/f

Answer 15

false

Question 16

Cervix dilates: external os first followed by internal os.
T/F

Answer 16

true

Question 17

Cervix becomes __ shapes as external os dilates widely

Answer 17

cone

Question 18

what stage of labor: Simultaneous shortening of the cervix and dilation of internal os.

Answer 18

first

Question 19

what stage of labor: Vagina and uterus becomes one continuous canal that becomes tightly engaged by the distended allantochorion

Answer 19

1

Question 20

Onset of Myometrial Contractions
happens with the Presence of __ and __ contractions

Answer 20

cervicotubular and tubular-cervical

Question 21

prevent the premature displacement of the fetus/es for orderly expulsion from the horns

Answer 21

cervicotubular contractions

Question 22

___ cells undergo fatty degeneration

Answer 22

superficial

Question 23

Fetal Disposition in first stage of labor

Answer 23

Extension of forelimbs head and neck (foal and puppy); head and neck only in calf and lamb
Flexed knees of calf first occupy dilating cervix then digits enter cervix after 30 minutes as carpal joints extend in efforts to “stand up in utero

Question 24

Knees have to extend just prior to stage __ so that the calf is ready for the proper position

Answer 24

2

Question 25

duration oflabor of cows and bitch

Answer 25

4-24 hrs

Question 26

duration of labor of buffalo and mare

Answer 26

1-12 hrs

Question 27

duration of labor of cat

Answer 27

2-12 hrs

Question 28

duration of labor of sow

Answer 28

12-24 hrs

Question 29

duration of labor of ewe

Answer 29

6-12 hrs

Question 30

t/f 2nd and 3rd stages cannot be separated in polytocous species (dog, cat, sow)

Answer 30

true

Question 31

what stage: appearance of abdominal contractions superimposed upon each set of myometrial contractions

Answer 31

2

Question 32

what stage of labor: Disappearance of cervicotubular contractions

Answer 32

2

Question 33

reflex in stage 2

Answer 33

ferguson’s

Question 34

In mare, cow and ewe, the normal fetal disposition is
Presentation:
Position:
Posture:

Answer 34

anterior
dorsal (dorso-sacral)
extended limb

Question 35

In polytocous species (bitch, sow and queen) 40-45% of fetuses normally delivered in

Answer 35

posterior presentation

Question 36

duration of 2nd stage in domestic species

Answer 36

cow/buffalo: 30mins-3hrs
buffalo: 45-90mins
mare: 30mins
ewe/doe: 30min-1hr
sow: 30min-4hrs
bitch: 1st pup within 2hrs , 5-60mins next up to 24 hrs
cat: 1st kitten within 5-60mins, 5-60mins in between

Question 37

what stage: Cessation of regular abdominal contractions
Decreased amplitude of myometrial contractions

Answer 37

3

Question 38

Waves of contractions from uterine tube to cervix is reverse in what animal species

Answer 38

cow sow

Question 39

Weakening of acellular layer of adhesive protein ‘glue line’ between cotyledonary and caruncular epithelium leads to ___

Answer 39

placental separation

Question 40

Collagenization of placentome and flattening of maternal crypt epithelium in cow (starts last _ days of gestation)

Answer 40

5

Question 41

Apex of allantochorionic sac is inverted and as sac is ‘rolled down’ the cornua, the __ are drawn out of the crypts

Answer 41

fetal villi