Lecture 5 - Brachial Plexus

Question 1

Brachial plexus

Answer 1

Collection of axons held together by connective tissue that starts at neck (nerve roots) and travels through and ends in lower axilla becoming terminal branches that supplies motor and sensory fibers to upper limb

Question 2

How many roots make up the brachial plexus and where do they derive from

Answer 2

5 roots that are derived from ventral rami of C5, C6, C7, C8, T1

Question 3

how many and what are the name of the trunks that make up the brachial plexus

Answer 3

There are 3 trunks:
1. Upper
2. Middle
3. Lower

Question 4

how many divisions and what are the name of the divisions that make up the brachial plexus?

Answer 4

6 divisions:
-3 anterior
-3 posterior

Question 5

How many cords and what are the names of the cords that make up the brachial plexus

Answer 5

3 chords:
1. Lateral
2. Medial
3. Posterior

Question 6

How many branches and what are the names of the branches that make up the brachial plexus

Answer 6

5 branches:
1. Musculocutaneous
2. Median
3. Ulnar
4. Axillary
5. Radial

Question 7

Label the 2 missing nerves and the muscles that they innervate

Answer 7

Question 8

Label the missing nerve and the muscle it innervates

Answer 8

Question 9

Label the missing nerve and the muscle it innervates

Answer 9

Question 10

Label the missing nerves and the muscles that are innervated

Answer 10

Question 11

Label the missing nerves and the muscles that are innervated

Answer 11

Question 12

Label the missing nerves and the muscles that are innervated

Answer 12

Question 13

Label the missing nerves and the muscles that are innervated

Answer 13

Question 14

Label the missing nerves and the muscles that are innervated

Answer 14

Question 15

Label the missing nerves and the muscles that are innervated

Answer 15

Question 16

Label the missing parts of the table

Answer 16