Amoeba

Definition

Amoeba are single-celled eukaryotic organisms characterized by their ability to change shape and move using pseudopodia. Certain amoebae can cause severe infections in the human nervous system.

5 Must Know Facts For Your Next Test

1. Naegleria fowleri is a pathogenic amoeba known for causing primary amoebic meningoencephalitis (PAM).
2. Acanthamoeba species can lead to granulomatous amoebic encephalitis (GAE), a serious brain infection.
3. Infections by pathogenic amoebae often occur through exposure to contaminated water sources.
4. Symptoms of amoebic infections in the nervous system include headache, fever, nausea, vomiting, and neurological deficits.
5. Diagnosis of amoebic infections usually involves cerebrospinal fluid analysis and imaging studies.

Review Questions

• What type of infection does Naegleria fowleri cause?
• How do humans typically contract pathogenic amoebae that affect the nervous system?
• What are common symptoms associated with amoebic infections of the nervous system?

Related terms

Naegleria fowleri:

A pathogenic amoeba that causes primary amoebic meningoencephalitis.

Granulomatous Amoebic Encephalitis (GAE):

A chronic infection of the central nervous system caused by Acanthamoeba species.

Pseudopodia:

Temporary projections of eukaryotic cell membranes used in movement and feeding by certain cells like amoeba.