Select your answer:
Topics:
Health and Medicine Bacteria & Disease Embryology The Ankle and Lower Leg DNA Replication Asexual/Sexual Reproduction Dermatosis Degeneration Pathology The Cell Cycle Nasal Polyp Mutations Cardiovascular System Terminology Pancreas Physical Activity Anatomy: MuscleOther quiz:
Human Body Systems › View
Which system are the lungs in?
A. respiratory
B. digestive
C. excretory
D. muscular
Endocrine System › View
What is the main function of the endocrine system?
A. It creates electrical messages that are sent around the body to maintain homeostasis.
B. It maintains the correct level of oxygen in the body to maintain homeostasis.
C. It releases waste from the body to maintain homeostasis.
D. It creates chemicals, or hormones, that are sent around the body to maintain homeostasis.