A Certified Dental Assistant may perform the following procedures under the
appropriate supervision:
A Take radiographs, but not interpret radiographs
B. Take and record vital signs
C. Perform and record charting of the oral cavity
D. Use diagnostic and periodontic non-cutting lasers
E. A and B
F. All of the above

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.