Uterus, Uterine Tubes and Cervix Flashcards Preview

𝚙𝚑𝚢𝚜𝚒𝚘𝚕𝚘𝚐𝚢 𝟸 : 𝚛𝚎𝚙𝚛𝚘𝚍𝚞𝚌𝚝𝚒𝚘𝚗 > Uterus, Uterine Tubes and Cervix > Flashcards

Flashcards in Uterus, Uterine Tubes and Cervix Deck (52)
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1

What is the inner lining of the uterus called?

→ Endometrium

2

What is the body of the uterus called?

→ Myometrium

3

What do the uterine tubes end in?

→ Fimbriae

4

What increases the size of a newborns uterus?

→ Maternal steroids

5

What does the myometrium growth depend on?

→ Estradiol

6

When does the myometrium grow rapidly?

→ During puberty

7

Where do uterine fibroids originate?

→ Myometrium

8

In what shape are myometrial fibres?

→ Spiral fibres

9

When does the endometrium thicken?

→ At puberty

10

What is a good bioassay of estradiol levels?

→ 7-16mm

11

What is the stromal matrix?

→ The smallest the endometrium can get

12

What does the stromal matrix look like after menstruation?

→ Small columnar cells with glandular extensions 2-3mm thick

13

What is the proliferative phase stimulated by?

→ Estradiol from the dominant follicle

14

What are the changes that occur in the proliferative phase?

→ Stromal cell division, ciliated surface
→ Glands expand and become tortuous
→ Increased vascularity and neoangiogenesis

15

When are progesterone receptors expressed?

→ when the endometrium gets to 4mm

16

When does the secretory phase start and why?

→ 2-3 days after ovulation
→ The gradual rise in progesterone causes a reduction in cell division

17

What are the changes that occur in the secretory phase?

→ Glands increase tortuosity and distend
→ Secretion of glycoproteins and lipids
→ oedema
→ increased vascular permeability
→ arterioles contract and grow tightly wound

18

What happens to the myometrium during the secretory phase?

→ Myometrial cells enlarge
→ movement is suppressed to prevent contractions
→ blood supply increases

19

What causes menstruation?

→ Falling levels of steroid from the corpus luteum

20

Describe what happens during menstruation

1) Prostaglandin release causes constriction of the spiral arterioles
2) Hypoxia causes necrosis
3) Vessels then dilate and bleeding ensues
4) Proteolytic enzymes are released from the dying tissue
5) Outer layer of the endometrium is shed and 50% is lost in 24 hours

21

How long does bleeding last?

→ 4 days

22

What happens to the basal layer after menstruation?

→ It is covered by an extension of glandular epithelium

23

What are the three components of the mucosa?

→ secretory
→ columnar ciliated epithelial cell
→ non ciliated peg cell

24

What does the muscularis layer consist of?

→ inner circular and outer longitudinal layers
→ blood vessels and lymphatics

25

What is the serosa?

→ Outer layer of the uterine tubes

26

What do epithelial cells in the uterine tube express?

→ High numbers of estrogen receptors

27

What happens to epithelial cells in the uterine tube mid cycle?

→ They undergo differentiation and increase in height

28

When can the oocyte pass?

→ Mid cycle

29

What happens to the epithelial cells of the uterine tube when progesterone starts being produced?

→ The estrogen receptors are suppressed
→ They decrease in height

30

What is the function of the cilia?

→ They beat which moves the egg forward