★ 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:
Reproduction Brain and Nervous System Blood Pathology Forensics: Blood Prokaryotic Cells and Viruses Transport system in Living Things (Human) All About Blood Nervous System: Diseases/Problems/Illnesses Wellness & Influences Transportation Body Fluids & Circulation Consciousness and Sleep Blood Cells Psychology Vocabulary IV Therapy and Blood TransfusionOther quiz:
Vital Signs › ViewWhich tool is used to measure blood pressure?
A. Arm cuff and stethoscope
B. Thermometer
C. Scale
D. MRI
Central and Peripheral Nervous System › View
The Peripheral Nervous System is made up of
A. the brain and spinal cord
B. all of the neurons in the body
C. the neurons outside of the brain and spinal cord
D. the neurons in your arms and legs