Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
What are the roots of the brachial plexus?
|
C5-C8, T1
|
|
|
What innervates the rhomboids and where does this nerve come from? What spinal nerve?
|
The dorsal scapular nerve off the C5 root of the brachial plexus.
|
|
|
What innervates the levator scapulae muscle?
|
The dorsal scapular nerve off of the C5 root of the brachial plexus. Also C3 and C4 cervical nerves.
|
|
|
What does the dorsal scapular nerve (from C5 root of brachial plexus) innervate?
|
The rhomboids and part of levator scapulae.
|
|
|
What innervates the serratus anterior?
|
Long thoracic nerve (C5-C7 roots of brachial plexus).
|
|
|
After the roots/rami, what does the brachial plexus divide into?
|
3 trunks-- superior, middle and inferior.
|
|
|
What nerves does the superior/upper trunk (C5, C6) of the brachial plexus give off?
|
Suprascapular nerve to infra/supraspinatus muscles and the nerve to the subclavius muscle.
|
|
|
What innervates the infra/supraspinatus muscles?
|
Suprascapular nerve from superior trunk of brachial plexus.
|
|
|
What innervates the subclavius muscle?
|
The nerve to the subclavius from the superior trunk of the brachial plexus.
|
|
|
After trunks, what does the brachial plexus become?
|
Divisions.
|
|
|
After divisions, what does the brachial plexus become?
|
Cords-- lateral, posterior, and medial.
|
|
|
What does the lateral cord (C5-C7) give rise to?
|
lateral pectoral nerve to pec major and minor.
|
|
|
What does the posterior cord (C5, C6) give rise to?
|
upper and lower subscapular upper and lower subscapular nerves to subscapularis and teres major. also thoracodorsal nerve to latissimus dorsi.
|
|
|
What does the medial cord (C8, T1) give rise to?
|
medial pectoral nerve to pec major and minor.
|
|
|
What innervates pectoralis major?
|
medial (from medial cord) and lateral (from lateral cord) pectoral nerves
|
|
|
What innervates pectoralis minor?
|
medial pectoral nerve from medial cord.
|
|
|
What innervates subscapularis muscle?
|
Upper and lower subscapular nerves from posterior cord (C5, C6) of brachial plexus.
|
|
|
What innervates teres major?
|
Lower subscapular from posteror cord (C5, C6) of brachial plexus.
|
|
|
What innervates latissimus dorsi?
|
Thoracodorsal nerve from posterior cord (C5, C6) of brachial plexus.
|
|
|
What innervates the trapezius?
|
CN XI - spinal accessory.
|
|
|
What makes the superior trunk?
|
C5 and C6
|
|
|
What makes the middle trunk?
|
C7
|
|
|
What makes the inferior trunk?
|
C8 and T1
|
|
|
What makes the lateral cord?
|
C5-C7
|
|
|
What makes the posterior cord?
|
C5-T1 all contribute fibers
|
|
|
What makes the medial cord?
|
C8, T1
|
|
|
What happens after the lateral cord?
|
Musculocutaneous nerve and then contributions to median nerve.
|
|
|
What happens to the posterior cord?
|
Axillary nerve and radial nerve.
|
|
|
What happens to the medial cord?
|
Contributions to the median nerve, ulnar nerve, and cutaneous nerves to arm and forearm.
|
