Which of the Following Is NOT TRUE for the Superior

question 45

Multiple Choice

Which of the following is NOT TRUE for the superior mediastinum?

• A) the right and left brachiocephalic veins unite to form the superior vena cava at the lower border of the first right costal cartilage and the lateral border of the manubrium of sternum
• B) contains the arch of the aorta
• C) trachea lies between the esophagus and the bodies of thoracic vertebrae TI-TIV
• D) contains the phrenic nerves
• E) left vagus nerve gives rise to a recurrent laryngeal branch, which hooks around the arch of the aorta and ascends between the trachea and the esophagus

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Expenses that do not change with the level of output or sales, such as rent, salaries, and insurance.

Fixed Cost

A cost that does not vary with the level of output or sales, such as rent, salaries, and insurance premiums.

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Indirect expenses related to the operation of a business, such as rent, utilities, and administrative salaries, that are not directly tied to the production of goods or services.