Vocabulary
multicellular, cells, tissues, stomach, digest, living tissue, bone, brain, organ, neurons, heart, muscle, nervous system, digestive system, excretory system, respiratory system, articular system, locomotor system, subsystem, organ, system, Nervous System, nerves, Respiratory System, Cardiovascular System, arteries, veins, blood, Digestive System, Urinary System, Lymphatic System, antibodies, bacteria, viruses, infection, lymphocytes (white blood cells), Skeletal System, Muscular System, Integumentary System, homeostasis, Reproductive System, nervous tissue, neurons, stimulus, reaction, organs, automatic reflex, external stimulus, motor neurons, sensitivity, neurons, central nervous system, brain, external stimuli, internal stimuli, sensory organ, reflexes