Histology of UG system

Question 1

Two layers of capsule of kidney

Answer 1

Outer layer of fibroblasts and collagen fibres

Inner layer of myofibroblasts

Question 2

What does the medulla contain

Answer 2

Straight tubules, collecting ducts and the vasa recta

Question 3

What are medullary rays

Answer 3

Vertical striations that originate in the medulla
Contain staright tubules and collecting ducts
Each nephron and it’s connecting tubule form the uriniferous tubule

Question 4

Two layers of Bowman’s capsule

Answer 4

Visceral and Parietal

Parietal consists of simple squamous epithelium

Question 5

How does the proximal tubules appear

Answer 5

Intensely eosinophillic
Cuboidal epithelium
brush border microvilli

Question 6

How do you identify distal tubules on a slide

Answer 6

Simple cuboidal epithelium
Few microvilli (appear more straighter)

Question 7

What epithelium lines collecting tubules

Answer 7

Simple cuboidal epithelium

Question 8

Epithelium of ureters

Answer 8

Transional epithelium

Cuboidal when relaxed and squamous when strected

Question 9

Epithelium of urethra

Answer 9

Epithelium varies from stratified or pseudostratified columnar to stratified squamous

Question 10

Epithelium of ovary

Answer 10

Germinal epithelium

Surface of the ovary lined by single layer of cuboidal cells; some look almost squamous in certain areas –

Question 11

Primordial follicle epithelium

Answer 11

Single layer of squamous cells

Question 12

Epithelium of primary follicle

Answer 12

Cuboidal initially

Later develops into stratified epithelium

Question 13

Two layers of theca folliculi

Answer 13

Theca interna - layers of cuboidal secretory cells

Theca externa - connective tissue cells

Question 14

Characteristics of secondary follicle

Answer 14

Fluid containing antrum that is surrounded by cells that are 6-12 layers thick

Question 15

What is the single layer of cells that surround mature oocyte

Answer 15

Corona radiata

Question 16

3 layers of uterine tubes

Answer 16

Serosa – outermost layer composed of mesothelium and thin layer of connective tissue
Muscularis – inner, thick circular layer and outer, thinner longitudinal layer
Mucosa – inner lining of the uterine tube; composed of simple columnar epithelium

Question 17

What is the epithelium of the portion of cervix that projects into vagina (ectocervix)

Answer 17

Stratified squamous epithelium

Question 18

EPithelium of cervical canal (endocervix)

Answer 18

simple columnar epithelium

Question 19

Layers of vaginal wall

Answer 19

Inner mucosal layer – lined with stratified squamous epithelium
Mid muscular layer – outer longitudinal and inner circular layers
Outer adventitial layer – inner dense CT containing elastic fibers and outer loose CT containing blood and lymphatic vessels and nerves

Question 20

Components f testis

Answer 20

Tunica albuginea – thick capsule of dense CT surrounding each testis
Mediastinum testis – thickening of posterior part of tunica albuginea
Seminiferous tubules – series of long tubules in which sperm are produced and mature
Interstitial connective tissue – loose CT surrounding seminiferous tubules containing interstitial cells of Leydig

Question 21

Epithelum of seminiferous tubules

Answer 21

Complex stratified epithelium composed of Sertoli and spermatogenic cells

Question 22

Where are leydig cells located

Answer 22

In between SF tubules

Question 23

What are intratesticular ducts lined with

Answer 23

Lined by simple cuboidal epithelium

Question 24

What are efferent ductules

Answer 24

Lined with pseudostratified columnar epithelium

Question 25

What is the epididymis made up of

Answer 25

Pseudostratified epithelium that consists of principal cells and basal cells

Question 26

What is the vas deferens lined with

Answer 26

Pseudostratified columnar epithelium

Question 27

3 layers of prostate gland

Answer 27

Inner mucosal layer Intermediate submucosal layer Peripheral layer containing main prostatic glands

Question 28

What zones does the adult prostatic parenchyma consist of

Answer 28

Central zone – cells have prominent and slightly basophilic cytoplasm and larger nuclei Peripheral zone – 70% of glandular tissue of the prostate Transitional zone – contains mucosal glands Periurethral zone – contains mucosal and submucosal glands