lec 10

Question 1

the mucosa of the uterine tubes is composed of

Answer 1

simple columnar epithelium ciliated and non-ciliated secretory cells
and a lamina propria loose connective tissue

Question 2

the Muscular layer of uterine tube is composed of

Answer 2

inner circular and an outer longitudinal

Question 3

the uterine tube is covered by (serosa or adventitia)

Answer 3

Serosa: Visceral peritoneum

Question 4

Makes up bulk of uterus ?

Answer 4

Myometrium

Question 5

how many layers does the myometrium form ? and are they distinguished ? arrangement ?

Answer 5

4 no they are ill defined
1-4 longitudinal
2-3 circular

Question 6

the increase of myometrial size due to response to estrogen is mainly caused by ?

Answer 6

hypertrophy (increase in size

although some hyperplasia might occur

Question 7

endometrium is made of which type of cells ?

Answer 7

simple columnar epithelium contains two types of cells, ciliated and non-ciliated secretory cells

Question 8

At end of menstrual phase, endometrium is usually reduced to

Answer 8

thin layer of lamina propria, deep ends of uterine glands, and some covering epithelium.

Question 9

what type of glands do we find in uterus and in which layer of endometrium ?

Answer 9

Simple tubular glands they sometimes branch in their deeper portions

lamina propria

Question 10

what is the epithelial lining of glands

Answer 10

simple columnar epithelium but the ciliated are rare in glands

Question 11

how many days does the Proliferative phase

Answer 11

10

Question 12

the menstrual phase is caused by ?

Answer 12

Failure of fertilization ovum leads to inhibition in production of progesterone by corpus luteum

Question 13

when does the secretory phase start ? for how long ?

Answer 13

Start at ovulation and lasts about 14 days

Question 14

the secretory phase results from action of ?

Answer 14

progesterone secreted by corpus luteum

Question 15

describe the glands in the secretory phase and proliferative

Answer 15

proliferative –> straight tubules with narrow lumen

secretory –> dilated tubules highly coiled

Question 16

what causes the dilation of the lumen of the glands in the secretory phase

Answer 16

glycoprotein secretory products dilate lumens of glands

Question 17

In this phase endometrium reaches its maximum thickness

Answer 17

secretory phase

Question 18

Mitosis is rarely seen during this phase (uterine)?

Answer 18

secretory phase

Question 19

Cervix Is lined by

Answer 19

simple, high columnar mucous-secreting epithelial cells

Question 20

The external surface of the cervix that bulges into lumen of vagina is covered with

Answer 20

stratified squamous epithelium

Question 21

which type is the cervical mucous glands

Answer 21

extensively branched

Question 22

describe the mucous secretions from the cervix in these phases
secretory phase or in pregnancy ?
At time of ovulation?
mention the reason

Answer 22

proliferate and secrete a more viscous and abundant mucous , because of progesterone

mucous secretions are watery

Question 23

the mucosa of the vagina is lined by ?

Answer 23

stratified squamous

Question 24

the mucosa of the vagina contains many ———– bit it is devoid of ————–

Answer 24

elastic fibers

devoid of glands

Question 25

what is the effect of estrogen on vagina

Answer 25

vaginal epithelium synthesizes and accumulates a large quantity of glycogen, which is excreted into lumen of vagina.

Question 26

what causes the low PH of the vagina ?

Answer 26

Bacteria metabolize glycogen and form lactic acid

Question 27

The wall of vagina consists of

Answer 27

inner mucosa layer, a middle muscular layer, and an outer dense connective tissue layer, adventitia

Question 28

Muscular layer of the vagina is made of

Answer 28

ill defined | inner circular outer longitudinal

Question 29

The gonads appear initially at

Answer 29

5th week

Question 30

Primordial germ cells migrate from

Answer 30

yolk sac

Question 31

Primordial germ cells reach the primitive gonads beginning of week --------- and invading genital ridges in --------------

Answer 31

5 6th W

Question 32

the gonadal ridges lie

Answer 32

on the medial surface of mesonephros

Question 33

Gonads (testes and Ovaries) are derived from three sources

Answer 33

(1) Mesothelium (mesodermal epithelium) lining the posterior abdominal wall. (2) Underlying mesenchyme (embryonic connective tissue). (3) Primordial germ cells

Question 34

which part of the indifferent gonad differentiate XY --> XX -->

Answer 34

medulla differentiates into testis, while cortex regresses cortex differentiates into ovary, while medulla regresses

Question 35

gonads of two sexes are identical and called indifferent gonads until week ----------

Answer 35

7

Question 36

In male, under influence of -----------------, the gonadal cords continue to proliferate and penetrate deep into medulla to form ------------

Answer 36

testis-determining factor (TDF) | medullary or seminiferous cords

Question 37

seminiferous cords become continuous at their extremities with rete testis in --------- month

Answer 37

4

Question 38

Sertoli cells derived from

Answer 38

surface epithelium of gland

Question 39

The Sertoli cells produce what ?until when ? that does what ?

Answer 39

mullerian inhibiting substance (MIS) until puberty suppress development of paramesonephric ducts, which form uterus and uterine tubes

Question 40

Interstitial (leydig) cells , derived from what? and lies where?

Answer 40

original mesenchyme of gonadal ridge, lie between semineferous cords.

Question 41

Seminiferous cords are composed of ?

Answer 41

spermatogonia | sertoli cells

Question 42

By-------------- week leydig cells begin production of --------------

Answer 42

``` 8th W androgenic hormones (testosterone) ```

Question 43

Seminiferous cords remain solid until

Answer 43

puberty

Question 44

Testosterone production is stimulated by

Answer 44

human chorionic gonadotropin (GTH).

Question 45

hCG reaches peak amount during the ------- period of fetal development

Answer 45

8 – 12 W