Menstural Cycle Flashcards

1
Q

Secondary oocyte is arrested In the which stage

A

Secondary oocyte is arrested In the diplotene stage

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2
Q

Number of follicles is max at

A

Intrauter life 5 th month 6-7 millions
Birth 1-2 million
Puberty 4-5 lakhs follicles

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3
Q

Initial recruitment of follicles is

A

Hormones independent

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4
Q

Gnrh is released in —————- manner

A

Pulsatile

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5
Q

Functions of fsh

A

Prevent follicles from undergoing atresia
Stimulates follicles

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6
Q

Role of fsh

A

Fsh acts on granulosa cells
Estrogen
Inhibit b
Estrogen negative feedback on fsh
Positive feedback on lh
Proliferate uterine endometrium

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7
Q

Fsh receptors are present in

A

Granulosa cells

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8
Q

Granulosa cell tumour of ovary

A

Feminizing tumour because of Estrogen
And inhibit b Is the tumour marker

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9
Q

Inhibit b acts

A

As negative feedback on fsh

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10
Q

Y estroge alone is not given intact uterus patients

A

Endometrial cancer
Endometrial hyperplasia

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11
Q

Role of lh

A

Lh surge
Acts on theca cells
Acts on granulosa cells

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12
Q

Lh surge is initiated by

A

Estrogen

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13
Q

Lh surge

A

Meiosis resumes
Follicles converting into corpus luteum

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14
Q

Estrogen on theca cells

A

Produces androgens

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15
Q

Characteristics is theca cells and granulosa

A

Aromatise enzyme absent
Cyp17

And vice versa

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16
Q

Theca cells receptors for

A

Lh

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17
Q

Granulo cells receptors for

A

Fsh

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18
Q

Role of lh on granulosa cells

A

Acts on granulosa cells
Produces progesterone

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19
Q

Lh receptors preset on

A

Theca and granulosa cells

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20
Q

Protester produced earlier in menstrual cycle

A

32-36 hrs before lh surge

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21
Q

Small quantities of progesterone effects on lh and fsh

A

Positive

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22
Q

Ovarian cycle is initiated by

23
Q

Size of follicle just before ovulation

24
Q

Time interval between lh surge and ovulation

A

32 -36 hrs

24 -36 hrs

25
Time inter between lh peak and ovula
10 -12 hrs
26
Time between lh peak and Estrogen peak
14-24 hrs
27
Lh surge is maintained by
Estrogen and progesterone
28
Before ovulation
Lh and fsh surge
29
Ovulation is due to
Lh surge
30
Meiosis 1 is resumed due to
Lh surge 32-36 hrs before
31
First half of cycle is called
Follicular phase Proliferating phase
32
What is cumulus oophorus
Granulosa cells surrounding the primary oocyte
33
A trial cavity fluid
Estrogen plus growth factor+ lh
34
If lh appears in antral cavity in early phase
An ovulation Occurs in pcos
35
Which hormone maintain corpus leteum
Lh
36
Max size attainment by
Occurs after 8 days of that is 22 days
37
Hormones produced by the corpus leteum
Progesterone Estrogen Inhibit a
38
Progesterone action on lh
Decrease negative feedback
39
At low concentrations of progesterone
Lh positive Fsh positive
40
High concentration of progesterone
Lh negative Fsh negative
41
Which enzyme is responsible for shedding of endometrium
Mettaloprotease enzyme
42
Prostaglandin release in secretary phases
PGF 2alpha
43
Oestrogen released on the secretory phase
Zona basal is deep layer
44
Second half of cycle is called as
Luteal phase Secretory phase
45
Main hormone I first half of cycle
Estrogen
46
Main hormone in second half
Progesterone
47
Luteal phase durations vary
False fixed for 14 days
48
Which hormone maintains corpus in non pregnant
Lh Pregnant lo hcg
49
Life span of corpus leteum
10-12 days In non pregnancy In pregnancy 10 -12 weeks Maintaining by hcg
50
All hormones peak at ovulation
Lh fsh Estrogen 24-36 hrs before
51
Progesterone peaks
8 days after ovulation
52
Mittelschemerx syndrome
Mid cycle abdominal pain
53
Oestrogen is produced. Y
Granulosa cells
54
Irregular painless cycles
Anovulatory cycles