Select your answer:
Topics:
A&P Musculoskeletal Major Internal Organs of the Body Disorders of The Joints Vocabulary Endodontic Surgery Cardiovascular System Terminology Inflammation and Healing Digestive and Circulatory System Vital Signs The Chemistry of Microbiology Neurological Disorders Human Digestive System Genetics and Probability Asexual Reproduction Genetics VocabularyOther quiz:
The Musculoskeletal System › ViewWhat is a motor unit?
A. A motor neuron and all of the skeletal muscle fibers it stimulates
B. A contractile unit of a muscle fiber
C. The tissue that surrounds the muscle fiber
D. The junction between the muscle cell and neuron
Body System › View
Which system in the human body includes the heart, blood, arteries, and veins?
A. cardiovascular
B. muscular
C. digestive
D. respiratory