Which Statement Is True of Esophageal Achalasia

question 25

Multiple Choice

Which statement is true of esophageal achalasia?

• A) It is caused by failure of lower esophageal muscles to relax.
• B) It is caused by a weak cardiac sphincter, leading to repeated episodes of reflux.
• C) The esophagus ends in a blind pouch.
• D) The major feature of this disorder is enlarged and swollen veins.

Know the reporting requirements for wage income and the significance of receiving and preparing accurate tax documents.

Recognize the role and applicability of Circular 230 and other regulatory frameworks in tax preparation.

Understand the legislative process for federal tax laws and the function of IRS Regulations and Revenue Procedures in tax administration.

Assess the importance of preparer identification numbers for tax preparers.

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Definitions:

(E)-

A stereochemical descriptor indicating that two substituents are on opposite sides of a double bond or around a central atom in a molecule.

(Z)-Hex-3-Ene

A specific geometric isomer of hex-3-ene where the two highest priority substituents on either end of the carbon-carbon double bond are on the same side.

Mechanism

The detailed step-by-step description of how reactants are transformed into products in a chemical reaction, including intermediates and transition states.

Reaction

A chemical transformation whereby initial reactants undergo a change to produce final products, involving the rearrangement of atomic bonds.