Topics: Circulatory / Respiratory Quiz
What causes the semilunar valves to open?
A. contraction of the ventricles
B. contraction of the atria
C. stimulation of the SA node
D. backflow of blood in the aorta and pulmonary artery during diastole
E. contraction of the cardiac muscle that makes up the valves
Select your answer:
Topics:
Nervous & Endocrine Systems BMS Cell Cycle and Cancer EKG Medical Term Nutrition, Neuroscience & Mental Health Organization of Systems Conjunctivita Regulating the Cell Cycle Chemistry The Brain Our Control Center Diseases Serology/Blood Typing Vitamins Introduction to Kinesiology Circulatory and Lymphatic System Deficiency DiseaseOther quiz:
Types of Nutrients › ViewWhich nutrient builds, maintain and repair body tissues and cells.
A. fat
B. water
C. protein
D. carbohydrates
Excretory System › View
Average weight of human kidney is
A. 90-140 g
B. 100-150 g
C. 110-160g
D. 120-170 g