Session 2 - The Brachial Plexus Flashcards
What is the structure shown in the image?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/422/977/q_image_thumb.jpg?1659428357)
The brachial plexus
What exactly is the brachial plexus?
A network of nerve fibres that run through the neck and axilla, into the arm.
What are the five divisions of the brachial plexus?
Read That Damn Cadaver Book
- Roots
- Trunk
- Divisions
- Cords
- Branches
What is A?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/432/844/q_image_thumb.jpg?1659428361)
Roots of brachial plexus
What do 1-5 represent?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/432/935/q_image_thumb.jpg?1659428361)
The anterior fibres of spinal nerves C5, C6, C7, C8, T1 respectively
What is a distinctive feature of the components of A?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/433/026/q_image_thumb.jpg?1659428361)
What is B?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/433/225/q_image_thumb.jpg?1659428362)
The trunks
What is 6, and what is it a combination of?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/433/837/q_image_thumb.jpg?1659428362)
Superior trunk: A combination of C5 and C6 roots.
What is 7?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/433/922/q_image_thumb.jpg?1659428362)
Middle trunk: A continuation of C7.
What is 8?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/433/949/q_image_thumb.jpg?1659428363)
Inferior trunk: A combination of C8 and T1 roots.
When are the trunks formed?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/433/958/q_image_thumb.jpg?1659428363)
just before they enter the axilla through the axillary inlet (or apex)
What is C?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/434/051/q_image_thumb.jpg?1659428363)
The divisions
What are 9 and 10?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/434/619/q_image_thumb.jpg?1659428363)
9 - Anterior divisons
10 - Posterior divisions
What do the divisions leave us with?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/434/686/q_image_thumb.jpg?1659428363)
What is D?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/020/434/706/q_image_thumb.jpg?1659428363)
The cords