A Nasogastric Tube May Be Used To

question 1

Multiple Choice

A nasogastric tube may be used to:
1) aspirate gas and fluid from the stomach.
2) feed the patient.
3) instill a contrast agent for a radiographic examination of the stomach.

• A) 1 only
• B) 1 and 2 only
• C) 2 and 3 only
• D) 1, 2, and 3

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Definitions:

All-or-None Response

A principle stating that the strength of a response of a nerve or muscle fiber is not dependent on the strength of the stimulus.

Excitatory Signals

Electrical or chemical signals that increase the likelihood of a neuron firing, promoting neural activity.

Action Potential

A temporary shift in the electrical charge of a neuron's membrane, leading to the transmission of a nerve impulse.

Threshold

The level of stimulation required to trigger a neural impulse.