Which of the following correctly describes the process of hearing?

Vibration of the eardrum is directly transmitted to the eighth cranial nerve, bypassing the inner ear structures.

Sound waves enter the ear canal and are converted to electrical impulses.

Vibration of the eardrum transmits through the bony ossicles to the perilymph in the inner ear, stimulating the eighth cranial nerve.

Sound is transmitted directly from the eardrum to the brain.

Answer and Explanation

The Correct Answer is C

Choice A rationale

Vibration of the eardrum is not directly transmitted to the eighth cranial nerve, bypassing the inner ear structures. The vibrations from the eardrum are first transmitted through the ossicles (tiny bones in the middle ear) to the cochlea in the inner ear.

Choice B rationale

Sound waves enter the ear canal, but they are not directly converted to electrical impulses. The sound waves cause the eardrum to vibrate, and these vibrations are transmitted through the ossicles to the cochlea, where they are converted into electrical signals that are sent to the brain via the eighth cranial nerve.

Choice C rationale

Vibration of the eardrum transmits through the bony ossicles to the perilymph in the inner ear, stimulating the eighth cranial nerve. This is the correct description of the process of hearing.

Choice D rationale

Sound is not transmitted directly from the eardrum to the brain. The sound-induced vibrations of the eardrum are transmitted through the ossicles to the cochlea, where they are converted into electrical signals that are sent to the brain via the eighth cranial nerve.

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Correct Answer is C

Explanation

Rationale:

When administering multiple liquid medications through an NG tube, it’s important to administer each medication separately to prevent drug interactions. After each medication, the NG tube should be flushed with 30 mL of water to ensure that the medication has been fully administered and to prevent the tube from becoming clogged.

A. Colonoscopy B. Endoscopic retrograde cholangiopancreatography (ERCP) C. Upper GI series D. Upper GI endoscopy .

Correct Answer is A

Explanation

Choice A rationale

A colonoscopy is the standard investigation for colorectal cancer. It allows for the visualization of the entire colon and rectum, and can also allow for the removal of polyps and the taking of biopsies if needed.

Choice B rationale

Endoscopic retrograde cholangiopancreatography (ERCP) is a procedure used to diagnose diseases of the gallbladder, biliary system, pancreas, and liver, not rectal cancer.

Choice C rationale

An upper GI series, which involves X-rays of the esophagus, stomach, and small intestine, would not be used for screening for rectal cancer.

Choice D rationale

An upper GI endoscopy, which involves the use of a flexible endoscope to visualize the esophagus, stomach, and duodenum, would not be used for screening for rectal cancer.

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Which of the following correctly describes the process of hearing?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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