Which system is a functional system, not an organ system in the anatomical sense, that consists of innate and adaptive defense mechanisms?
A) respiratory system
B) lymphatic system
C) endocrine system
D) immune system
E) cardiovascular system

Question

Quizplus · Accepted Answer

The immune system is a functional system that consists of innate (non-specific) and adaptive (specific) defense mechanisms to protect the body from foreign invaders such as pathogens. The respiratory, lymphatic, endocrine, and cardiovascular systems are all organ systems that have specific functions within the body.

Which System Is a Functional System, Not an Organ System