Beginner Brachial Plexus Roots and Trunks Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which spinal nerve anterior rami usually form the roots of the brachial plexus?
- C1-C4
- C5-T1
- L1-L5
- T2-T6
Q2. Which two roots unite to form the upper trunk of the brachial plexus?
- C5 and C6
- C8 and T1
- C7 and C8
- C6 and C7
Q3. Which root continues as the middle trunk?
- C5
- C7
- T1
- C8
Q4. Which roots unite to form the lower trunk?
- C5 and C6
- C8 and T1
- C7 and C8
- C6 and C7
Q5. Where do the roots of the brachial plexus pass in relation to the scalene muscles?
- Anterior to anterior scalene with the subclavian vein
- Within sternocleidomastoid
- Between anterior and middle scalene
- Between middle and posterior scalene
Q6. Which artery accompanies the brachial plexus through the interscalene interval?
- Facial artery
- Common carotid artery
- Subclavian artery
- External carotid artery
Q7. Which major vein does not normally pass through the interscalene interval with the brachial plexus?
- Subclavian vein
- Internal jugular vein
- Axillary vein
- Brachiocephalic vein
Q8. Which nerve arises directly from the roots of the brachial plexus and supplies serratus anterior?
- Radial nerve
- Long thoracic nerve
- Suprascapular nerve
- Axillary nerve
Q9. Which nerve arises mainly from the C5 root and supplies the rhomboids?
- Dorsal scapular nerve
- Median nerve
- Musculocutaneous nerve
- Ulnar nerve
Q10. Which branch arises from the upper trunk and passes toward the suprascapular notch?
- Phrenic nerve
- Dorsal scapular nerve
- Suprascapular nerve
- Long thoracic nerve