Oestrous Cycle In General

Question 1

Name the steps of ovarian follicles and corpus luteum which lead to lactuation and pregnancy

Answer 1

On anki

Question 2

Name the different phases of oestrus cycle

Answer 2

1. Oestrus and ovulation; Follicular phase
2. Luteal phase (ends with CL regression)
3. Follicular phase

Question 3

Oestrus and ovulation phase of oestrus cycle

Answer 3

-female accepts male and is standing to be mounted

-Gonadotrophin surge leading to ovulation- rapid rise of Oestradiol induces surge

Question 4

Oestrus=

Answer 4

Heat

Question 5

Animals only show behavioural symptoms of HEAT only if they have bee…

Answer 5

Pre exposed to progesterone

Question 6

Luteal phase of oestrus cycle

Answer 6

-functional lifespan of corpus luteum (CL)

-follicles begin to secrete progesterone and transform into luteal cells

Question 7

Follicular phase of oestrus cycle

Answer 7

Rapidly growing pre-ovulatory follicles- single dominant follicle is now synthesising a lot of Oestradiol responsible for rapid rise in Oestradiol
Ovulation occurs

Question 8

Fill in the links of the oestrous cycle table

Answer 8

On anki

Question 9

Effects of hormones on the structure and function of the reproductive tract:

Question 10

Follicular phase Oestradiol Prepares tract for…

Luteal phase Progesterone Prepares tract for…

Answer 10

Upcoming fertilisation
Upcoming pregnancy

Question 11

What are the effects of Oestradiol on the structure and function of female repro tract:
-in general

Answer 11

Stimulates proliferation, motility, perfusion and serous secretory activity within the reproductive tract

Question 12

What are the effects of Oestradiol on the structure and function of female repro tract:
-on uterine horn

Answer 12

-induces growth of uterine horn
-enhances motility via ^ oxytocin receptor levels
0increased excitability, vascularity and progesterone receptor

Question 13

What are the effects of Oestradiol on the structure and function of female repro tract:
-on fimbriae and oviduct

Answer 13

Increased motility—> transport of gametes
Increased ciliary activity
Increased secretion

Question 14

What are the effects of Oestradiol on the structure and function of female repro tract:
-cervix

Answer 14

Increased serous secretions
And gland/crypt development

Question 15

What are the effects of Oestradiol on the structure and function of female repro tract:
-vagina

Answer 15

Increased :
acidic pH
epithelium proliferates
keratinisation

Question 16

What are the effects of progesterone on the structure and function of female repro tract:
-on uterine ehorn

Answer 16

^ growth of uterine wall
^ myometrium thickness
^leucocytes towards the end

Decreased
-motility by reducing oxytocin receptors & myometrium excitability

Question 17

What are the effects of progesterone on the structure and function of female repro tract:
-on fimbriae and oviduct

Answer 17

Decreased
-motility
-ciliary. Activity
-secretion

Question 18

What are the effects of progesterone on the structure and function of female repro tract:
-cervix

Answer 18

^ mucous secretions

Question 19

What are the effects of progesterone on the structure and function of female repro tract:
-in general

Answer 19

suppresses motility, stimulates growth, and enhances endometrial glandular activity and mucous secretions

Question 20

Difference between what effect hormone progesterone and Oestradiol had on glands

Answer 20

Prog: ^ glands coiling
Oes: ^ glands lengthening

Question 21

Puberty is defined as…

Answer 21

First time animal ovulates

Question 22

Age at which animal. Reaches puberty and whether oestrous cycle is seasonal or not

Answer 22

On anki

Question 23

Polyoestrous meaning

Answer 23

Having regular/multiple oestrous cycles a year

Question 24

Cyclic vs acyclic

Answer 24

Cyclic—> having regular cycles
Acyclic—> are in different reproductive states during their life eg cannot have reproductive symptoms during pregnancy (absence of regular cycles)

Question 25

Acyclic vs cyclic diagram

Answer 25

On anki

Question 26

Name the phases of the cycle
Name the stages of the cycle

Answer 26

Phases; luteal and follicular
Stages; oestrus, met-oestrus, di-oestrus, pro-oestrus, oestrus

(On anki)