Answer:
Right coronary artery
Explanation:
Right coronary artery (RCA). The right coronary artery supplies blood to the right ventricle, the right atrium, and the SA (sinoatrial) and AV (atrioventricular) nodes, which regulate the heart rhythm.
Increased accessibility and accommodation for people with physical handicaps. Option D
<h3>What is sociology?</h3>
Sociology is the branch of science that deal with the study of the society and human dynamics. It also deals with dynamics of the human society. It also deals with social institutions.
Thus, the social reforms that Sociology has influenced in some way is increased accessibility and accommodation for people with physical handicaps.
Learn more about sociology:brainly.com/question/11098307
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Electricity flows from positive to negative
The correct answer is helium nucleus. An alpha particle has a two neutrons and protons that formed together into a particle which also happens to be very identical to the helium nucleus. However, the helium particles that are being produced by particle accelerator are less to be referred as an alpha particle.