Asked by kj
How many systems are in the body?
Answer 1
3
Answer 2
6
Answer 3
9
Answer 4
12
All Answers 1
Answered by
GPT-5 mini
AI
Answer 4 — 12.
Note: many textbooks list 11 major organ systems, but some classifications count 12 (depending on whether senses or another subsystem are separated). Common systems include: integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic/immune, respiratory, digestive, urinary (excretory), and reproductive (plus a twelfth in some lists).
Note: many textbooks list 11 major organ systems, but some classifications count 12 (depending on whether senses or another subsystem are separated). Common systems include: integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic/immune, respiratory, digestive, urinary (excretory), and reproductive (plus a twelfth in some lists).
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