Help with Immune System Injuries and Disorders

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Anatomy › Help with Immune System Injuries and Disorders

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1

What insect carries the parasite responsible for African sleeping sickness?

Tsetse fly

CORRECT

Botfly

0

Mosquito

0

Lone star tick

0

Explanation

Africa sleeping sickness, also known as African trypanosomosis, is caused by a parasite. The parasite, Trypanosoma brucei rhodesiense, is carried by the Tsetse fly. The fly bite is the mechanism for the parasite entering the body. There are two variations of sleeping sickness, East African and West African.

2

Which of the following does not release histamine?

Neutrophil

CORRECT

Mast cell

0

Basophil

0

Platelet

0

Explanation

Mast cells are perhaps the best-known producers of histamine. Basophils also release histamine and contribute to the inflammatory response, while platelets are also capable of releasing histamine. Neutrophils are best-known for their phagocytic properties, and do not produce histamine.

3

Which of the following do NSAIDS effect?

COX-1

CORRECT

Lipoxygenase

0

Phospholipase C

0

Leukotriene

0

Explanation

NSAIDs inhibit COX-1, inhibiting the formation of prostanglandins.

4

What type of microbiota infect individuals who are already immunocompromised?

Opportunistic microbiota

CORRECT

Resident microbiota

0

Transient microbiota

0

Pathogens

0

Explanation

Opportunistic microbiota can form biofilms and affect patients who are immunocompromised, suchs as someone with AIDS or a chronic illness.

Resident microbiota are always present in the body and frequently have mutualistic relationships with their human hosts. Transient microbiota are present at some times, but absent at others. Pathogens affect healthy individuals, as well as those who may be immunocompromised.

5

What is sarcoidosis?

A disorder of the immune system cells that cause inflammation which leads to the formation of granulomas

CORRECT

Another term for tuberculosis

0

A form of cancer

0

A digestive disorder that leads to irritable bowels

0

Explanation

Sarcoidosis is a disease of unknown cause that leads to inflammation. The immune cells that cause inflammation do not dissipate and instead, create clusters called granulomas. Not all cases of sarcoidosis require treatment.

6

Which of the following causes edema during inflammation?

Increased hydrostatic pressure in the arterioles

CORRECT

Increased oncotic pressure in the venules

0

Increased oncotic pressure in the arterioles

0

Decreased hydrostatic pressure in the venules

0

Explanation

There are two primary types of pressure: hydrostatic pressure is the result of fluid volume pressing on a physical boundary, while oncotic pressure is the pulling force of protein concentrations causing watter diffuse across a membrane. During an inflammation response, fluid is allowed to leak out of arterioles and capillaries resulting in increased hydrostatic pressure in the interstitium. Edema is the accumulation of fluid in the interstitium.

All the other answers cause fluid to return to the vessel, rather than exit it.

7

What are some of the symptoms of African sleeping sickness?

Fever, severe headache, irritability, extreme fatigue, swollen lymph nodes, and aching muscles

CORRECT

Severe fever, hacking cough, and blood in stools

0

Wet cough, excessive mucous secretion from nose and eyes, and headache

0

Irritability, insomnia, uncontrollable bleeding

0

Explanation

African Sleeping Sickness, caused by a parasite spread by the Tsetse Fly, has several symptoms that appear about 1-3 weeks after being bitten by the fly. The most common symptoms are fevers, extreme fatigue, muscle aches, irritability, swollen lymph nodes, and severe headaches.

8

Which of the following is a sign of inflammation?

Calor

CORRECT

Ataxia

0

Dizziness

0

Impaired vision

0

Explanation

Calor—or redness—is associated with increased blood flow, which can result from inflammation. During an inflammation response, histamine release results in vasodilation and increased bloodflow, which can cause the infalmmed area to appear red.

9

What is the difference between MRSA and other Staphylococcus infections?

MRSA is antibiotic resistant

CORRECT

They are the same thing

0

Other Staphylococcus infections are more serious

0

MRSA is easier to treat

0

Explanation

MRSA stands for methicillin-resistant Staphylococcus aureus. It is often seen in hospitals or long term care facilities. It can be treated using other antibiotics or is sometimes drained and left to heal without other intervention.