lecture 5 Flashcards
Branchial plexus:
- provide sensory and motor innervation …
- derived from …
- general plan is
a. # roots that consist of what from where to form what
b. # trunk which bifurcate (divide into 2) to do what
c. # divisions which unites what
d. # cords
e. # big nerves, plus numerous smaller ones
- to upper limb
- ventral rami of spinal nerves c5-t1
- a. 5 roots (rami) consisting of ventral rami from c5-t1 unite to form trunks
b. 3 trunks (upper, middle, lower) which bifurcate to form divisions
c. 6 divisions(3 anterior, 3 posterior) which unite to form cords
d. 3 cords (lateral, medial, posterior)
e. 5 big nerves, plus numerous smaller ones
mnemonic: 5 3 6 3 5
rose the delicious cooked burger
the 3 anterior division supploes flexor via what?
via lateral and medial cord
the 3 posterior division suplles extensors via what?
posterior cord
the 3 posterior division supplies extensors via what?
posterior cord
- where does the 5 roots lie b/w?
- where 3 trunks cross where?
- where does the divisions pass posterior to what?
- 3 cords surround where, posterior where
- anterior and middle scalene muscle
- posterior triangle of the neck
- posterior to clavicle
- 2nd part of the axillary artery
posterior to pectoralis minor
axillary nerve:
1. where is the axillary nerve?
- it passes what
- it innervates what?
- it supplies what with senasation?
axilla
surgical neck of the humerus
deltoid and teres minor
a small patch of skin
Radial nerve
- found where
- travels where in order to
- supplies
on the radial (lateral) side of the forearm
travels around the shaft of the humerus in order to innervate the muscles of the posterior compartments of both the arm and forearm
skin over posterior arm, forearm and dorsum of hand with sensation
musculocutaneous nerve
travel through what muscle
innverates the muscles of what
continues as awhat nerve to where
travels through the coracobranchilis muscle
innervates the muscles of the anterior compartment of the arm
lateral side of the forearm
median nerve
has no what
is the principal nerve to the muscles
travels down the middle of the limb
median nerve supplies what
no branches
of the anterior compartment of the forearm and the thumb
middle of the limb
the index and middle fingers, palmar surface of the thumb and most palm with sensation
ulnar nerve
innervate some what
primary nerve to where
travels along what
supplies the skin of what
forarm muscles
primary nerve to the small muscles found in hand
ulnar side of the forearm
ulnar side of hand and little finger and ulnar side of the ring finger with sensation
the long thoracic nerve innervates what?
serrratus anterior muscle
the dorsal scapular nerve innervates what?
rhomboids and levator scapulae muscles
the suprascapular nerve innervates what?
supraspinatus and infraspinatus
lateral pectoral nerve branche from where and inneverates?
lateral cord
pectoralis major muscle
medial pectoral nerve branches from and innervates?
medial cord
innervates both pectoralis major and pactoralis minor muscles
