★ Respiratory and Circulatory Quiz
What happens when you exercise?
A. Your heart beats faster, delivering more oxygen to your muscle cells
B. Your heart beats faster, delivering less oxygen to your muscle cells
C. Your heart beats slower, delivering more oxygen to your muscle cells
D. Your heart beats slower, delivering less oxygen to your muscle cells
Select your answer:

Topics:
Infection Conjunctivita Pathogens Biomedical Introduction to Mycology Renal & Neural Human Eye and Colourful World Mental Health CABG Surgery Genetic Diseases Sensory Disorder Biotechnology: Tools & Techniques Head and Neck Anatomy Gastroenterology Nursing Bone Marrow HistologyOther quiz:
Skin Structure, Growth, & Nutrition › ViewWhich type of nerve fibers carry impulses from the brain to the muscles?
A. sensory
B. motor
C. secretory
D. central
Body Systems › View
Your muscles use the food you eat as energy to contract.
A. TRUE
B. FALSE
C. Both
D. Neither