prostate

Question 1

what constitues the main bulk of the prostate gland

Answer 1

fibroelastic stroma with abundant smooth muscle

Question 2

what contains the rich prostatic venous plexus which surrounds the gland?

Answer 2

the dense prostatic fascia

Question 3

what is the covering of the prostate and what does it do?

Answer 3

• fibroelastic capsule, containing smooth muscle fibers

- from the capsule septa penetrate the gland dividing it into lobes

Question 4

how are the tubuloalvelor glands of the prostate arranged? and what does each arrangment contain?

Answer 4

arranged in two concentric zones around the urethra

• internal (mucosal and submucosal glands)
• peripheral (main glands)

Question 5

what is the type of cells in the glandular epithelium, and main glands?

Answer 5

• glandular epithelium is simple coloumnar in the main glands
• pseudostratified in the mucosal and submucosal glands

Question 6

where does the prostatic duct open into? and what is the opening lined with?

Answer 6

prostatic urethra, and is lined by stratified coloumnar epithelium

Question 7

what fills the spaces of the between the glandular profiles?

Answer 7

fibromuscular stroma, dense connective tissue containing collagen and elastic fibers and abundant strands of smooth muscle fibers

Question 8

what is the urethra lined by? and what maybe present below the opening of the ejaculatory duct

Answer 8

urothelium, but below the openings of the ejaculatory ducts patches of pseudostratified and stratified coloumnar epithelium maybe present

Question 9

what happens to the prostate with advancing age?

Answer 9

• oval or colloid amyloid bodies called prostatic concentrations are often present in the alveolar lumina.
• they are concentric lamella of calcified glycoproteins stained eosinophilic

Question 10

what are seminal vesicles, and what do they display?

Answer 10

coiled tubular glands, and display irregular diverticula (lateral outpocketings)

Question 11

what is the wall of the simnal vesicles composed of?

Answer 11

• inner mucosal
• middle musclular
• outer connective tissue layer

Question 12

epithelium of the seminal vesicle, and what is seen in the apical part?

Answer 12

• it is pseudostratified cuboidal in some places, simple columnar
• lipofuscin granules and secretory vacuoles are seen in the paical part

Question 13

in the lumina of the apical part

Answer 13

-alkalin and proteins rich secretory product stains intensely eosinophilic to show wide range of secretory products like (fructose, prostaglandins, endorphin, transferin, lactoferrin, fibronectin)

Question 14

what does the lamina propria of the seminal vesical consist of?

Answer 14

connective tissue containing scarttered smooth muscle cell,

thin long branching and interconnecting folds or ridges of the mucosa

Question 15

what gives a labyringth- like appearance to the glandular lumen around the central cavity?

Answer 15

the irregular primary, secondary, and tertiary folds projecting into the lumen

Question 16

features of the muscularis externa in the seminal vesicle?

Answer 16

smooth muscle fibers arranged in inner circular and outer longitudinal layers

Question 17

the adventitia is?

Answer 17

a connective tissue rich in elastic fibers, which surround the gland that extends into the space between the coils connecting them?

Question 18

what stain does the penis have?

Answer 18

verhoeffs elastic stain

Question 19

what attaches loosely to the underlying connective tissue?

Answer 19

thin penile skin

Question 20

what is slightly kratinized below the skin? and what is present?

Answer 20

• the epidermis

- loose superficial penile fascia which is devoid of adipocytes

Question 21

what does the superficial fascia of the penis contain?

Answer 21

smooth muscle that are continours with dartos muscle of the scrotum

Question 22

what runs upward in the subcutaneous tissue of the penis?

Answer 22

the single superficial dorsal vein

Question 23

what surrounds the three cavernous bodies? and seperate the superficial dorsal vein from the deep dorsal vein

Answer 23

fascia penis

Question 24

what is the main bulk of the penis composed of?

Answer 24

three cylinderical bodies of cavernous or erectile tiussue

Question 25

what does the corpus spongiosum penis contain?

Answer 25

the urethra and at its end the corpus spongiosum expands forming a conical enlargement called GLAND PENIS

Question 26

what does the tunica albuginea surround in the penis and what does it form?

Answer 26

surrounds the corpora cavernosa penis and between the two bodies it forms a median fibrous septum (septum penis)
** incomplete distally

Question 27

what surrounds the cavernous spaces? and what are they lined with?

Answer 27

• elastic fibers and smooth muscle cells

- lined by endothelial cells

Question 28

what are ebner cushions

Answer 28

semilunar protrusions of the cavernous wall, important mechanism of erection

Question 29

what branches into the trabeculae? what is important about some of these branches?

Answer 29

deep arteries of the penis, a part of the banches directly ends in capillaries and supply the trabeculae

Question 30

what do the other branches form

Answer 30

concoluted helicine arteries that open directly into the cavernour spaces

Question 31

the thin wallaed veins draining the cavernous spaces are located?

Answer 31

undr the tunica albuginea, they leave corpoa cavernosa and run around them to join the deep dorsal vein located in the dorsal medican groove of corpora cavernosa penis

Question 32

tunica albuginea of the corpus spongiosum

Answer 32

is much thinner and has more elastic fibers and smooth muscle cells are also present

Question 33

what surrounds the mucosa of the urethra

Answer 33

circular fibrous layer surrounds the mucosa of the urethra

Question 34

what is the penile urthra lined by?

Answer 34

stratified columnar epithelium which contains lightly stained mucus secreting endoepithelial cells.

Question 35

what does the penile mucosa display?

Answer 35

numerous small recess, which some of them lead into branches tubular mucus secreting glands (littre glands or urethreal glands ) located in the submucosa

Question 36

what are elastic fibers and collagen fibers stained in?

Answer 36

• elastic fibers in black colour

- collagen fibers in red