Questions: Which of the following is not found within the intercostal spaces? a) Intercostal nerves b) Intercostal membrane c) The thoracic aorta d) Posterior intercostal arteries

Which of the following is not found within the intercostal spaces? a) Intercostal nerves b) Intercostal membrane c) The thoracic aorta d) Posterior intercostal arteries
Transcript text: Which of the following is not found within the intercostal spaces? a) Intercostal nerves b) Intercostal membrane c) The thoracic aorta d) Posterior intercostal arteries
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Solution

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The answer is c) The thoracic aorta.

Explanation for each option:

a) Intercostal nerves: These are indeed found within the intercostal spaces. They run along the inferior border of each rib and are responsible for supplying the muscles and skin in the thoracic region.

b) Intercostal membrane: This is also found within the intercostal spaces. It is part of the structure that separates the intercostal muscles and helps maintain the integrity of the thoracic wall.

c) The thoracic aorta: This is not found within the intercostal spaces. The thoracic aorta is a major blood vessel that runs along the posterior part of the thoracic cavity, but it is not located within the intercostal spaces themselves.

d) Posterior intercostal arteries: These are found within the intercostal spaces. They branch off from the thoracic aorta and supply blood to the intercostal muscles and overlying skin.

In summary, the thoracic aorta is not located within the intercostal spaces, making option c the correct answer.

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