★ 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:
Psychology, Psychiatry, & Social Work Non-infectious Disease Physical Pulse Neuron Structure Child Development Physical Education Maximal Oxygen Consumption (VO2 Max) Chronic Diseases Schizophrenia First Aid Molecular Basis of Inheritance DNA Speed, Flexibility part of Components of Physical Fitness Year 7 NutritionOther quiz:
The Ear › View Which of the following is pictured:
A. maculae
B. cochlea
C. cupula
D. all of the above
Anatomy › View
What neurotransmitter is associated with the muscles:
A. Actin
B. Acetylcholine
C. Perimysium
D. Epimysium