This document provides a quiz on the upper limb nerves. It covers the anatomy and functions of key nerves like the axillary nerve, radial nerve, ulnar nerve and branches of the brachial plexus. Various deformities caused by injuries to different nerves are described, such as Erb's palsy from injury to the upper trunk, and Klumpke's paralysis from injury to the lower trunk. The muscles and actions supplied by major nerves like the musculocutaneous nerve, median nerve and radial nerve are tested.
This document provides a quiz on the upper limb nerves. It covers the anatomy and functions of key nerves like the axillary nerve, radial nerve, ulnar nerve and branches of the brachial plexus. Various deformities caused by injuries to different nerves are described, such as Erb's palsy from injury to the upper trunk, and Klumpke's paralysis from injury to the lower trunk. The muscles and actions supplied by major nerves like the musculocutaneous nerve, median nerve and radial nerve are tested.
This document provides a quiz on the upper limb nerves. It covers the anatomy and functions of key nerves like the axillary nerve, radial nerve, ulnar nerve and branches of the brachial plexus. Various deformities caused by injuries to different nerves are described, such as Erb's palsy from injury to the upper trunk, and Klumpke's paralysis from injury to the lower trunk. The muscles and actions supplied by major nerves like the musculocutaneous nerve, median nerve and radial nerve are tested.
This document provides a quiz on the upper limb nerves. It covers the anatomy and functions of key nerves like the axillary nerve, radial nerve, ulnar nerve and branches of the brachial plexus. Various deformities caused by injuries to different nerves are described, such as Erb's palsy from injury to the upper trunk, and Klumpke's paralysis from injury to the lower trunk. The muscles and actions supplied by major nerves like the musculocutaneous nerve, median nerve and radial nerve are tested.
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QUIZ ON THE UPPER LIMB NERVES- DR ADEL BONDOK 2020
(https://www.youtube.com/watch?v=VYK3OXUD-xs)
1) Identify each nerve and give reason
1. Axillary nerve Around the surgical nerve 2. Radial nerve In the spiral (radial) groove 3. Ulnar nerve Behind the medial epicondyle
2) What are the branches of the brachial plexus (pg 28,29)
Roots: 2 C5: dorsal scapular nerve (nerve to rhomboids) C5, 6, 7: long thoracic nerve (nerve to serratus anterior) Trunks: only the upper trunk (C5, 6) Nerve to subclavius Suprascapular nerve Cords: 3 - 5 – 5 Lateral cord (C5, 6, 7): 3 branches - Lateral pectoral nerve - Lateral root of the median nerve - Musculocutaneous nerve Medial cord (C8, T1): 5 branches - Medial pectoral nerve - Medial root of median nerve - Medial cutaneous nerve of the arm - Medial cutaneous nerve of the forearm - Ulnar nerve Posterior cord (C5-8 & T1): 5 branches - Upper subscapular nerve - Lower subscapular nerve - Nerve to latissimus dorsi (thoracodorsal nerve) - Axillary nerve - Radial nerve 3) Deformity I i. Name this deformity Waiter’s tip position ii. Name the nerve affected Upper trunk of the brachial plexus “Erb’s paralysis” iii. What are the nerve roots affected? iv. C5 & C6 v. What is the cause of this nerve injury? Violent traction of the head during delivery
4) Deformity II i. Name this deformity Complete claw hand ii. Name the nerve affected Lower trunk of the brachial plexus “Klumpke’s paralysis” iii. What are the nerve roots affected? C8 & T1 iv. What is the cause of this nerve injury? Violent stretch of the arm during climbing or delivery
5) Name the hand deformity caused by injury of each nerve and explain why: 1. Flat shoulder Atrophy of the deltoid muscle 2. Wrist drop and fingers drop Paralysis of the extensors of the hand and fingers 3. Partial claw hand Paralysis of the interossei and medial 2 lumbrical muscles 6) Nerve I i. Identify this nerve Musculocutaneous nerve ii. What is its origin? Lateral cord of the brachial plexus iii. Name the muscle pierced by this nerve Coracobrachialis muscle iv. What are the muscles supplied by this nerve? Biceps, brachialis & coracobrachialis (BBC)
7) Nerve II i. Identify this nerve Ulnar nerve ii. Give reason Behind the medial epicondyle iii. What is its origin? Medial cord of the brachial plexus iv. How it enters the hand? In front of the flexor retinaculum
8) Hand deformity I i. Name this deformity Partial claw hand ii. What is the nerve affected? Ulnar nerve
9) Hand deformity II i. Name this deformity Complete claw hand ii. What is the nerve affected? Lower trunk of the brachial plexus 10) Ulnar nerve i. What are the muscles supplied by this nerve in the forearm? - Flexor carpi ulnaris - Medial half of the flexor digitorum profundus ii. What are the muscles supplied by this nerve in the hand? - Hypothenar eminence - Interossei muscles - Medial 2 lumbrical - Adductor pollicis
11) Deformity III
i. Name this deformity Winging of the scapula ii. What is the nerve affected? Long thoracic nerve iii. What is the muscle affected? Serratus anterior iv. What is the root value of the nerve affected? C5, 6, 7
12) Deformity IV i. Name this deformity Flat shoulder ii. What is the nerve affected? Axillary nerve iii. What is the muscle affected? Deltoid muscle iv. What is the origin of the nerve affected? Posterior cord of the brachial plexus 13) Fracture i. What is the nerve injured by this fracture? Axillary nerve ii. What are the muscles supplied by this nerve? Deltoid & teres minor
14) Nerve III
i. Identify this nerve Median nerve ii. What is its origin? Medial root: medial cord of the brachial plexus Lateral root: lateral cord of the brachial plexus
15) Hand deformity III
i. Name this deformity Ape- like hand ii. Name the nerve affected Median nerve iii. How this nerve enters the hand In the carpal tunnel iv. What is the cause of the deformity? Paralysis and atrophy of the thenar muscles
16) Fracture in the humerus
i. What is the nerve that may be injured by this fracture? Radial nerve ii. What is the origin of this nerve? Posterior cord of the brachial plexus iii. What is the main action of the muscles supplied by this nerve? Extension of the elbow, wrist and fingers 17) Hand deformity IV i. Name this deformity Wrist drop and fingers drop ii. What is the nerve affected? Radial nerve iii. What are the muscles affected? Extensors of the wrist and fingers
