Radiolucent structures are dense and prohibit the passage or absorb x-rays as they travel toward the receptor.  Radiopaque structures are less dense and allow x-rays to easily pass through them as they travel toward the receptor. 

The NOMAD Pro shielding design limits exposure and permits others to be in the exam room during operation without any precautions. The NOMAD Pro should be held with two hands and with elbows elbows close to the body for stability during operation. 

Maxillary anterior teeth have larger crowns and longer roots than mandibular anterior teeth.  Most mandibular molars have 3 roots, whereas most maxillary molars have two roots.

was killed at Chancellorsville by his own men, earned his nickname at the first battle of Bull Run/Manassas

Lincoln’s 2nd Vice President, who had his own plan for reconstruction

argued that Congress needed to protect the right of slave owners to take their “property” into the territories, was Jackson’s VP, thought South Carolina had the right to secede over states’ rights, issues like the Tariff of Abominations

lost Congress to the “Little Giant”, but won the presidency in 1860, but the South seceded because of his winning the election

senator from Massachusetts, a leading Radical Republican, was caned in the Senate

A minister on horseback who traveled the frontier to preach was called a(n):

Use the theoretical probability formula to solve the problem. Express the probability as a fraction reduced to lowest terms.A fair coin is tossed two times in succession. The set of equally likely outcomes is {HH, HT, TH, TT}. Find the probability of getting the same outcome on each toss.