Which system defends against threats inside and outside the body?
A) The respiratory system
B) The immune system
C) The gastrointestinal system
D) The urinary system

Question

Quizplus · Accepted Answer

The immune system is responsible for defending the body against threats from both inside and outside, including pathogens, cancerous cells, and foreign substances. The respiratory system is responsible for bringing oxygen into the body and removing carbon dioxide, the gastrointestinal system is responsible for digestion and absorption of nutrients, and the urinary system is responsible for removing waste products from the body.

Which System Defends Against Threats Inside and Outside the Body