Ch. 25 - Microbial Diseases of the Digestive System

Tortora - Microbiology: An Introduction 14th Edition

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Tortora 14th Edition

Ch. 25 - Microbial Diseases of the Digestive System

Problema 8

Capitolo 21, Problema 8

Use the following choices to answer the following question:
a. Campylobacter
b. Cryptosporidium
c. Escherichia
d. Salmonella
e. Trichinella

A characteristic disease symptom caused by this microorganism is swelling around the eyes.

Guida verificata passo dopo passo

Step 1: Understand the symptom described — swelling around the eyes — and consider which of the listed microorganisms is known to cause this symptom.

Step 2: Review the characteristics and typical disease presentations of each microorganism: Campylobacter, Cryptosporidium, Escherichia, Salmonella, and Trichinella.

Step 3: Recall that Trichinella is a parasitic worm that causes trichinosis, a disease often characterized by muscle inflammation and swelling, including periorbital edema (swelling around the eyes).

Step 4: Compare this symptom with the typical symptoms caused by the other microorganisms, which generally cause gastrointestinal symptoms rather than swelling around the eyes.

Step 5: Conclude that the microorganism associated with swelling around the eyes is Trichinella based on its disease pathology.

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Pathogenic Microorganisms and Their Disease Symptoms

Different microorganisms cause distinct diseases with characteristic symptoms. Recognizing these symptoms helps identify the causative agent. For example, swelling around the eyes is a hallmark symptom linked to specific infections, aiding differential diagnosis.

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Microorganisms in Health & Disease

Trichinella and Trichinosis

Trichinella is a parasitic roundworm causing trichinosis, typically contracted by eating undercooked meat. A key symptom is periorbital edema, or swelling around the eyes, due to larval migration and immune response. Understanding this helps link symptoms to the parasite.

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Helminths

Differentiation Between Bacterial, Protozoan, and Parasitic Infections

The listed organisms include bacteria (Campylobacter, Escherichia, Salmonella), a protozoan (Cryptosporidium), and a parasite (Trichinella). Knowing their classification and typical disease presentations is essential to distinguish which causes specific symptoms like eye swelling.

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Differential Staining

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Use the following choices to answer the following question:

a. Campylobacter

b. Cryptosporidium

c. Escherichia

d. Salmonella

e. Trichinella

Microscopic observation of a stool sample reveals gram-negative helical cells.

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