Question

1. last week, arnello was walking to class when he tripped, fell, and scraped his knee. while sitting in his next period class arnello noticed that his knee felt hot and appeared red and puffy. arnello remembered learning in science class that increased temperature and swelling at the site of an injury is an indication of one of our bodys immune responses. what other system is working with the immune system to produce the immune response depicted in this scenario? a. the nervous system. b. the muscular system. c. the circulatory system. d. the reproductive system.

Explanation:

The immune system works with the circulatory system. When there is an injury (like a scraped knee), the circulatory system helps transport immune - related cells (such as white blood cells) to the site of injury. The increased blood flow (part of the circulatory system's function) can cause redness (due to more blood vessels near the surface being filled with blood), warmth (as blood carries heat), and swelling (due to fluid and cell movement from the blood to the injured tissue). The nervous system (A) is for sensing and responding via electrical impulses, the muscular system (B) is for movement, and the reproductive system (D) is for producing offspring. None of these are directly involved in the immune - related response of redness, warmth, and swelling at an injury site in the described way.

Answer:

C. The Circulatory System