Lab 5 Flashcards by Jessica Carson

Q

This is a slide from the lung of a pig, what is the pale pink material in alveoli?

A

edema fluid with an increase in protein

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from the lung of a pig, what are the dilated clear spaces in this picture?

A

lymphatics filled with and expanded by edema

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from the lung of a pig, what could cause this lesion?

A

a lesion of the left AV valve, or something wrong with the muscle of the left ventricle

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from the lung of a pig, what do you think the lung would look like grossly?

A

diffusely dark red with foamy pink material found in the lumen of the bronchi

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from the lung of a pig, what would the histomorphologic diagnosis?

A

moderate diffuse pulmonary congestion and edema

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a lung, identify this structure:

A

pleura

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a lung, identify this structure:

A

subpleural lymphatics

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a lung, identify this structure:

A

interlobar lymphatics

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a lung, identify this structure:

A

lymphatic with edema

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a lung, identify this structure:

A

alveolar hyperemia

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a lung, identify this structure:

A

alveolar edema (with increased protein)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a canine artery, dentify this structure:

A

artery wall

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a canine artery, identify this structure:

A

granulation tissue

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

How would you name this arterial lesion?

A

arterial thrombus (chronic) with chronic arteritis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Identify this structure:

A

arteritis

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Identify this structure:

A

lines of Zahn

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Identify this structure:

A

fibrin

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Identify this structure:

A

leukocytes from blood

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

What is the term for free blood in the tissue?

A

hemorrhage

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

When hemorrhage forms swelling, what is it called?

A

a hematoma

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a nasal mass in a horse, what is the term for the intracellular yellow to brown granular pigment?

A

hemosiderin

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a nasal mass in a horse, where does the intracellular yellow to brown granular pigment come from?

A

phagocytosis of free red blood cell sby macrophages resulted in the breakdown of hemoglobin

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

This is a slide from a nasal mass in a horse, what is the term for the yellow pigment?

A

local bilirubin

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Identify this structure:

A

nasal epithelium

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Identify this structure:

fibrosis - from granulation tissue

Identify this structure:

hemorrhage resulting in a mass

Identify this structure:

hemosiderin containing macrophages

Identify this structure:

hematoidin

Identify this structure:

hemosiderin in macrophages

Identify this structure:

stratified squamous epithelium - squamous metaplasia

Identify this structure:

hemosiderin

Identify this structure:

large irregular plaques and patches

Identify this structure:

multifocal round to irregular dark red to purple macules and papules

On cut surface, how would you describe this structure?

the dark red to purple discoloration extends through the epidermis and dermis

What is the skin lesion in this picture examples of?

infarcts

What is an infarct?

a focus of necrosis that results from ischemia or blockage of blood flow

What is happening here?

Intussessception

Identify this structure:

Orad segment of the intestine

Name this lesion:

focal, acute, severe intussusception with venous congestion and infarction

What is an intussusception?

An intussusception is a lesion in the intestines that is characterized by proximal segment of the intestine telescoping or inverting into a distal segment of intestine

The slowing and stagnation of blood flow results in increased hydrostatic pressure and decreased tissue oxygenation (ischemia). What are two sequelae you would expect?

edema and necrosis would be expected

What is located here?

fibrin thrombus

Describe the endothelial and intimal surface here.

it is shaggy and colored tan to brown

What has happened to the vessel wall here?

it is thickened

How would you classify this lesion?

cranial mesenteric arteritis

What secondary lesion could have developed in association to arteritis?

the disruption of the vascular wall can lead to thrombus formation

What is the clear glistening fluid on cut surface in this picture?

edema

Name this lesion:

Acute, locally extensive, subcutaneous edema

What 4 mechanisms can account for this lesion?

increased microvascular permeability, increased intravascular hydrostatic pressure, decreased intravascular osmotic pressure, decreased lymphatic drainage

Is this lesion consistent with a vaccine reaction?

yes, the release of inflammatory molecules results in vasodilation, endothelial contraction, and increased vascular permeability

What would account for the edema in this case?

increased microvascular permeability

The lesion is on the cranial right lung lobe and the vessels are twisted around the mainstem, name this lesion:

acute, focal, cranial right lung lobe torsion

The color change to dark red or purple in the affected lung lobe is due to increase blood in the tissue. Is this an active or passive process?

passive

This is from a lung, Identify this structure:

bronchi

This is tissue from a lung, Identify this structure:

pulmonary arterial wall

Name this lesion:

acute, focal, severe pulmonary thromboembolus

What are the mechanisms for thrombus formation?

endothelial injury, abnormal blood flow, hypercoagulability

What is an arterial thrombus composed of?

plateletes and fibrin

What is the color that an arterial thrombus typically has?

tan to grey

How do arterial thrombi grow?

downstream from their attaachment side resulting in a tail that is not attached to the vessel wall

What is a venous thrombus composed of?

large numbers of red blood cells

What is the color that a venous thrombous typically has?

dark red

How do venous thrombi grow?

upstream of the site of initiation and take form of the vessels they are in

What is this zone of dark red?

hemorrhage

Name this lesion:

multifocal, acute, severe renal infarction

White infarcts are always what?

arterial

What color do arterial infarcts turn due to necrotic tissue break down and hemorrhage occuring?

red

What does venous obstruction result in?

stagnation of blood flow and reduction or loss of venous return

Grossly, what color are venous infarcts normally and why?

red due to back flow and accumulation of blood in the infarcted area

What are the three main ways a thrombus can form?

abnormal blood flow, endothelial damage, hypercoagulability

What can abnormal blood flow be caused by?

heart worm disease, cardiomyopathies, or cardiac valcular deformities

What can cause endothelial damage?

protein losing enteropathies or nephropathis or hyperadrenocortism

What can cause hypercoagulability?

bacteria, viruses, fungi, toxins, decreased clotting factors, liver failure, or anything that causes DIC

What is shown here?

ecchymotic hemorrhage

What is shown here?

subcutaneous hemorrhage

What are the 4 main patterns of hemorrhage?

petechiae, ecchymoses, purpura, suffusive (paint brush)

What can cause hemorrhage?

endothelium/vessel structure, platelets, coagulation factors