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*Neurologic* - brachial plexus
Neuro
25
Medical
Graduate
11/06/2011

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Cards

Term
ulnar nerve

sensation
Definition
ulnar sensation:

-palmar and dorsal 5th finger
-tip of 4th finger
Term
median nerve

sensation
Definition
median nerve sensation:

-palmar thumb, index, middle, 1/2 ring finger -->up to the wrist

-dorsal distal part of index, middle, 1/2 ring finger
Term
radial nerve

sensation
Definition
radial nerve sensation:

-dorsal aspect of the hand
-dorsal thumb and proximal portions of the 2nd and 3rd fingers and half of the 4th finger
Term
C6 nerve root

sensation - hand
Definition
C6 sensation:

-palmar and dorsal thumb
Term
C7 nerve root

sensation
Definition
C7 sensation:

-palmar and dorsal middle finger
Term
C8 nerve root

sensation
Definition
C8 sensation:

-palmar and dorsal 4th and 5th fingers
Term
reduced pain sensation

palmar 5th finger
Definition
ulnar n --> medial cord --> C8
Term
reduced pain sensation

middle palmar finger
Definition
median nerve --> lateral cord --> C7 root
Term
reduced pain sensation

proximal thumb, dorsal aspect
Definition
radial --> posterior cord --> C6 root
Term
reduced pain sensation

palmar thumb
Definition
median nerve --> lateral cord --> C6
Term
weakness

thumb abduction
Definition
C8, T1 --> medial cord --> median n
Term
thumb abduction
Definition
APB: abductor pollicis brevis

T1, (C8) --> medial cord --> median n
Term
thumb extension
Definition
extensor pollicus longus & brevis

C7, (C8) --> posterior cord --> radial n
Term
finger abduction
Definition
C8, T1 --> medial cord --> ulnar nerve
Term
forearm pronation
Definition
pronator teres

C6, C7 --> lateral cord --> median n
Term
elbow extension
Definition
triceps

(C6), C7 --> posterior cord --> radial n
Term
shoulder abduction
Definition
deltoid

C5 --> posterior cord --> axillary
Term
triceps muscle

innervation and action
Definition
TRICEPS is innervated by RADIAL nerve

(C6), C7 root --> posterior cord --> radial

elbow extension
Term
deltoid muscle

innervation and action
Definition
DELTOID innervated by AXILLARY nerve

C5 --> posterior cord --> axillary

shoulder abduction
Term
pronator teres

innervation and action
Definition
PRONATOR TERES innervated by MEDIAN nerve

C6, C7 --> lateral cord --> median n

forearm PRONATION
Term
abductor pollicis brevis

innervation and action
Definition
APB innervated by MEDIAN nerve

T1, (C8) --> medial cord --> median n

thumb abduction
Term
biceps

innervation and action
Definition
BICEPS innervated by MUSCULOCUTANEOUS nerve

C5, C6 --> lateral cord --> MSC

elbow flexion
Term
extensor pollicus longus & brevis

innervation and action
Definition
innervated by RADIAL nerve

C7, (C8) --> posterior cord --> radial n

thumb EXTENSION
Term
extensor digitorum
Definition
C7, (C8) --> posterior cord --> radial n

extend fingers
Term
abductor digiti minimi (ADM)

innervation and action
Definition
ADM innervated by ULNAR nerve

C8, T1 --> medial cord --> ulnar nerve

5th finger abduction
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