Questions: Which organ system protects you from pathogens like bacteria viruses? The cardiovascular system The digestive system The endocrine system The integumentary system The lymphatic system The muscular system The nervous system The reproductive system The respiratory system The skeletal system The urinary system

The answer is the integumentary system.

Explanation for each option:

1. The cardiovascular system: Incorrect. This system is responsible for circulating blood and transporting nutrients, oxygen, and waste products throughout the body.
2. The digestive system: Incorrect. This system is responsible for breaking down food, absorbing nutrients, and eliminating waste.
3. The endocrine system: Incorrect. This system is responsible for producing hormones that regulate various bodily functions.
4. The integumentary system: Correct. This system includes the skin, hair, and nails, and it acts as a barrier to protect the body from pathogens like bacteria and viruses.
5. The lymphatic system: Incorrect. This system helps in defending the body against infections and maintaining fluid balance, but it is not the primary barrier against pathogens.
6. The muscular system: Incorrect. This system is responsible for movement and maintaining posture.
7. The nervous system: Incorrect. This system controls and coordinates body activities by transmitting signals between different parts of the body.
8. The reproductive system: Incorrect. This system is responsible for producing offspring.
9. The respiratory system: Incorrect. This system is responsible for the exchange of gases (oxygen and carbon dioxide) in the body.
10. The skeletal system: Incorrect. This system provides structure and support to the body and protects internal organs.
11. The urinary system: Incorrect. This system is responsible for removing waste products from the blood and maintaining water and electrolyte balance.

Summary: The integumentary system is the organ system that protects you from pathogens like bacteria and viruses.