Giardia lamblia

Definition

Giardia lamblia is a unicellular eukaryotic parasite that causes giardiasis, a common gastrointestinal infection. It primarily inhabits the small intestine of humans and other mammals.

5 Must Know Facts For Your Next Test

1. Giardia lamblia has two life stages: the cyst and the trophozoite.
2. The infection is often transmitted through contaminated water or food.
3. It attaches to the intestinal wall using a ventral sucking disk.
4. Symptoms of giardiasis include diarrhea, abdominal cramps, and nausea.
5. Diagnosis typically involves stool sample analysis to identify cysts or trophozoites.

Review Questions

• What are the primary modes of transmission for Giardia lamblia?
• Describe the two life stages of Giardia lamblia.
• What are common symptoms associated with giardiasis?

Related terms

Cyst:

A dormant form of certain parasites that allows survival in harsh conditions.

Trophozoite:

The active, feeding stage in the life cycle of some protozoa.

Giardiasis:

An infection caused by Giardia lamblia characterized by gastrointestinal symptoms.