17 Questions
What is the origin of the posterior intercostal arteries in the lower 9 spaces?
Descending thoracic aorta
Which nerve has no anterior cutaneous branch?
1st Intercostal nerve
Which artery gives rise to the superior and lateral thoracic arteries?
Axillary artery
What is the destination of the smaller branch of the 2nd thoracic spinal nerve?
Brachial plexus
What is the origin of the 1st and 2nd posterior intercostal arteries?
Superior intercostal artery of the costocervical trunk
What is the course of the 1st and 2nd intercostal nerves?
They run on the internal surface of the 1st and 2nd ribs
What is the origin of the transversus thoracis muscle?
Internal surface of the costal cartilages 2-6
What is the function of the subcostal muscle?
To elevate the ribs
Which nerves supply the abdominal skin and muscles?
7th-11th intercostal nerves
What is the location of the internal intercostal muscles?
Deep to the external intercostal membrane
What is the function of the innermost intercostal muscle?
Not mentioned in the text
Which of the following arteries branches from the thoracic aorta?
Costocervical trunk
Which of the following vessels drains into the left brachiocephalic vein?
Left superior intercostal vein
Which of the following arteries is responsible for supplying the upper 6 anterior intercostal spaces?
Internal thoracic artery
Which of the following veins drains into the azygos vein?
Right superior intercostal vein
Which of the following arteries supplies the 7th to 9th anterior intercostal spaces?
Musculophrenic artery
Which of the following veins drains into the accessory hemiazygos vein?
5th-8th posterior intercostal veins
This quiz covers the anatomy of thoracic nerves, including their branches and functions, as well as the arteries of the thoracic region. Test your knowledge of the thoracic spinal nerves, brachial plexus, and more.
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