Hookworm resides in

Options

A. Duodenum
B. Rectum
C. Small intestime
D. Blood

Answer

**Step-by-Step Solution:**

1. **Understanding Hookworm Life Cycle**: Hookworms are parasitic nematodes that begin their life cycle as larvae in the environment. They can penetrate the skin of humans, particularly those who walk barefoot.

2. **Entry into the Human Host**: Once the larvae penetrate the skin, they enter the human body and travel through the circulatory system.

3. **Migration to the Lungs**: The larvae migrate to the lungs via the bloodstream. They leave the venules and enter the alveoli of the lungs.

4. **Travel Up the Trachea**: From the alveoli, the larvae move up the trachea (also known as the windpipe). This movement is often facilitated by coughing.

5. **Swallowing the Larvae**: The larvae are then swallowed and reach the digestive system.

6. **Final Destination - Small Intestine**: Upon reaching the small intestine, the larvae undergo a process of maturation, turning into adult worms. This maturation process takes about 5 to 9 weeks.

7. **Conclusion**: Therefore, the correct answer to the question "Hookworm resides in" is the small intestine.

**Final Answer**: Hookworm resides in the small intestine.

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