histology lab urinary

8/2/2019 Histology Lab Urinary

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Histology Lab Reviewer : Urinary System

KIDNEY: SLIDE #28

Scanner: The medulla

this area is the Medulla

clue: this region is free from Glomeruli

- This is where you can see the loop of henle,vasa recta and capillary duct.

HPO: medulla

A. B.

A. Identify structures: Loope of Henle- Lined by simple squamous epithelium

- Absence of RBC

- Nucleus protrude the lumen

B. Identify structure: Vasa Recta

- With RBC

If u see this, these are tubules which are the

continuation of the straight collecting tubules from

the cortex going to the medulla these are your

capillary duct

Scanner: the cortex

A.

As seen in the picture this the cortex,

Clue that your in the cortex: Presence of glomeruli

A. Identify pointed structure: Medullary Rays


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The medullary ray is made up of: straight

collective tubules

- Medullary rays are longitudinal structure that are

free from glomeruli.

- This is a substance in the cortex (acc. to dr)

Under HPO: Cortex

A.

B

C.

A. Identify pointed structure:Classify the type of capillary: Glomeruli

Fenestrated Capillary

B.

Identify pointed Space: Bowmans SpaceThe fluid in the Bowmans Space is directly

received by: Proximal Convoluted Tubules

C. Identify pointed structure (be specific):Parietal layer of the Bowmans Capsule

- simple squamous Epithelium

E.

D.

D. Identify pointed Structure: Proximal Tubule- narrow lumen

- few nuclei which are widely spaced

- dirty lumen/ lumen is obliterated by

Microvilli

- cells are simple cuboidal

E. Identify pointed vessel: straight collectingtubule

- Do not answer medullary ray if askedidentity pointed VESSEL, but rememberstraight collecting tubules is what makes

up the medullary ray. (so the longitudinal

area of E is the medullary ray)

F.

F. Identify structure: Distal Tubule- Wider lumen- More nuclei- No microvilli- The cells are simple cuboidalFrom here the urine will go to: Arch collecting

tubule


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URETER: SLIDE#31

Under LPO

Mucosa

Lamina propria Muscularis

Aventitia

- has a stellate lumen (taken from thecadaver, which had undergone rigor

mortis, so the smooth muscles (serosa) is

contracted)

- the epithelium is transitional- other structures mentioned: (but

according to Dr. he will not ask)

o lamina propriao musculariso adventitia

*possible questions acc to Dr:

Identify organ: Ureter

The dilated portion of this is called? Renal

Pelvis

Grossly name sights where stones can be

lodged:

- Uretropelvic junction- Pelvic brim- Where the ureters enter the bladder

URINARY BLADDER: SLIDE # 31

Scanner

Muscosal

Muscularis

- Thick muscularis- With transitional lining

Layers shown:

1. Mucosa2. Muscularis

The serosa cannot be seen in the slide

because the muscularis is thick

The muscularis has 3 layers:

- Inner longitudinal- Middle circular- Outer longitudinal


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Under HPO:

Umbrella cells

Identify tissue(in the slide above): transitional

- Also seen in ureter, prostatic urethra,membranous urethra and calyxes.

*remember Umbrella cells are located here.

PENIS: SLIDE #64 (for the urethra)

A

B

* This specimen didnt come from man, but might befrom a monkey that is why the structures are kind of

different.

A. Identify pointed structure: Tunica albuginea

B. This structure is equivalent to Corpus cavernosum

in humans (humans 2 and underneath this is the

corpus spongiosum but in the slide its at the top asseen below)

- an erectile tissue

C

D

C. Identify pointed structure: Corpus Spongiosum

- This body that contains the urethra

D. Identify pointed passage: Urethra

- which is inside the corpus spongiosum

Possible questions acc to Dr.:

Mucus glands in its lamina propria are called: LittresGland

Classify lining epithelium (male spongy urethra):

pseudostratified columnar epithelium, except at the

terminal end that is continuous to the glans penis

which is stratified squamous.

histology lab urinary

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