★ Immune System Quiz
The system that sends electrical signals to the heart that tell it to beat.
A. respiratory
B. lymphatic
C. nervous
D. digestive
Select your answer:
Topics:
Enzymes and Movement of Substances Brain Nervous System and Special Senses Environment The Cell Cycle & Cancer Genetic Diseases Human Circulatory System Parts of the Brain Infant Nutrition Macromolecules & Enzymes Bone Development and Remodeling Cellular Components Organisms ology & phobia EpithelialOther quiz:
Inflammation and Tissue Repair › ViewDolor means:
A. Swelling
B. Heat
C. Pain
D. Redness
E. Loss of function
Diseases and Preventions › View
How can you stop the spread of a virus?
A. Sneeze
B. cough
C. Social distance
D. shake hands