Nerves Of Thoracic Wall

Question 1

The intercostal nerves are the _____ rami of the first _____thoracic spinal nerves?

Answer 1

Anterior
11

Question 2

Position of:

First 6 nerves?
7th, 8th and 9th?
10th and 11th?

Answer 2

1. Within their intercostal space
2. Leave intercostal space pass deep to Costocartilage to enter abdominal wall
3. Pass Forward directly into abdominal wall

Question 3

Skin and parietal peritoneum are supplied by intercostal nerves?

Answer 3

7th to 11th

Question 4

First intercostal muscle gives rise to?

Answer 4

Lower trunk of brachial plexus

• gives a large branch that joins anterior ramus of 8th cervical vertebrae to give lower trunk of brachial plexus

Question 5

2nd intercostal nerve is joined to the medial cutaneous nerve of arm by?
And supplies?

Answer 5

Intercostobrachial nerve

Supplies skin of armpit, upper medial side of arm

Question 6

In coronary heart disease pain is referred along?

Answer 6

Intercostobrachial nerve to
Medial side of arm

Question 7

What is thoracic outlet? Its borders?

Answer 7

Thoracic cavity communicates with root of neck with an opening called thoracic outlet

Above
•Posteriorly- T1
•Laterally- medial borders of 1st ribs and costal cartilages
•Anteriorly- superior border of manubrium sterni

Below
•posteriorly- T12
• laterally- costal margin
• anteriorly- xiphysternal joint