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17 Questions

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Anatomy of Thoracic Nerves and Arteries

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Questions and Answers

What is the origin of the posterior intercostal arteries in the lower 9 spaces?

Internal thoracic artery

Supreme intercostal artery

Descending thoracic aorta (correct)

Costocervical trunk of the subclavian artery

Which nerve has no anterior cutaneous branch?

2nd Intercostal nerve

1st Intercostal nerve (correct)

3rd Intercostal nerve

Lateral cutaneous nerve

Which artery gives rise to the superior and lateral thoracic arteries?

Internal thoracic artery

Thoracic aorta

Axillary artery (correct)

Subclavian artery

What is the destination of the smaller branch of the 2nd thoracic spinal nerve?

Brachial plexus Signup and view all the answers

What is the origin of the 1st and 2nd posterior intercostal arteries?

Superior intercostal artery of the costocervical trunk Signup and view all the answers

What is the course of the 1st and 2nd intercostal nerves?

They run on the internal surface of the 1st and 2nd ribs Signup and view all the answers

What is the origin of the transversus thoracis muscle?

Internal surface of the costal cartilages 2-6 Signup and view all the answers

What is the function of the subcostal muscle?

To elevate the ribs Signup and view all the answers

Which nerves supply the abdominal skin and muscles?

7th-11th intercostal nerves Signup and view all the answers

What is the location of the internal intercostal muscles?

Deep to the external intercostal membrane Signup and view all the answers

What is the function of the innermost intercostal muscle?

Not mentioned in the text Signup and view all the answers

Which of the following arteries branches from the thoracic aorta?

Costocervical trunk Signup and view all the answers

Which of the following vessels drains into the left brachiocephalic vein?

Left superior intercostal vein Signup and view all the answers

Which of the following arteries is responsible for supplying the upper 6 anterior intercostal spaces?

Internal thoracic artery Signup and view all the answers

Which of the following veins drains into the azygos vein?

Right superior intercostal vein Signup and view all the answers

Which of the following arteries supplies the 7th to 9th anterior intercostal spaces?

Musculophrenic artery Signup and view all the answers

Which of the following veins drains into the accessory hemiazygos vein?

5th-8th posterior intercostal veins Signup and view all the answers