The Upper Margin of the Lungs Is at the Level

question 92

Multiple Choice

The upper margin of the lungs is at the level of the:

• A)jugular notch.
• B)vertebra prominens.
• C)laryngeal prominence.
• D)sternal angle.

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Definitions:

Olfactory Nerve

The first cranial nerve responsible for the sense of smell, transmitting sensory information from the nose to the brain.

Sacral Plexus

A network of nerves originating from the lower spine, providing motor and sensory nerves for the pelvis, buttocks, genitals, thighs, calves, and feet.

Sciatic Nerve

The largest nerve in the body, running from the lower back through the buttocks and down the legs, providing sensory and motor function.

Reflex Arc

A reflex arc is the neural pathway that controls a reflex action, typically consisting of a sensory neuron, a motor neuron, and sometimes one or more interneurons.