Unit I Lec 11-12 Flashcards
Axillary artery, axillary vein, brachial plexus, lymph nodes, fat
contents of axilla
Artery that begins at the lateral border of the first rib, extension of subclavian artery
axillary artery
Point at which brachial artery becomes axillary artery
lateral border of first rib
Lateral border of rfirst rib, medial border of pec minor
first part of axillary artery
Medial border of pec minor, lateral border of pec minor, deep to pec minor
second part of axillary artery
Lateral border of pec minor, lower border of teres major
third part of axillary artery
After lower border of teres major, axillary artery becomes what artery
brachial artery
How many branches off each part of axillary artery
Parts 1,2,3 have 1,2,3 branches
Name of branch off first part of axillary artery
superior thoracic artery
Superior thoracic artery supplies blood to what two spaces
first and second intercostal spaces
Names of 2 branches off 2nd part of axillary artery
thoracoacromial artery, lateral thoracic artery
Pectoralis major, pectoralis minor, subclavius and anterior deltoid are supplied by what artery
thoracoacromial artery
Serratus anterior, distal latissimus dorsi is supplied by what artery
lateral thoracic artery
Names of 3 branches off third part of axillary artery
subscapular artery, anterior humeral circumflex artery, posterior humeral circumflex artery
Subscapularis mx is supplied by what artery
subscapular artery
Anterior part of GHJ is supplied by what artery
anterior humeral circumflex artery
Posterior GHJ and posterior deltoid are aupplied by what artery
posterior humeral circumflex artery
Quadrangular space has what artery and nerve
posterior humeral circumflex artery, axillary nerve
Deltoid and teres minor are innervated by
axillary nerve
Teres minor, teres major, long head of triceps, lateral head of triceps/upper humerus
boundaries of quadrangular space
Teres minor, teres major, long head of triceps brachii
boundaries of triangular space
Vessel in triangular space
circumflex scapular artery
Vein that lies anterior to the axillary artery
axillary vein
Axillary vein emerges from what fascial compartment
axillary sheath
Axillary vein is/is not in the axillary sheath
is not
Largest diameter vein in the upper limb
basilic vein
Longest vein in the upper limb
cephalic vein
Basilic vein merges with what larger vein
axillary vein
Two smaller veins that merge to form, with the cephalic vein, the axillary vein
Lateral and medial brachial vein
The point at which cephalic vein becomes axillary vein, same point where we transition from brachial vein to axillary vein
Point of merger of lateral and medial brachial vein
Axillary vein becomes subclavian vein at what point
lateral border of first rib
Arrangement of 2 veins running with 1 artery
vena commitantes
Examples of vena comitantes in forearm
Ulnar artery w/2 ulnar veins,
radial artery w/2 radial veins
Vein beginning at dorsal lateral aspect of hand, unites with axillary vein
cephalic vein
What groove does the cephalic vein travel through
deltopectoral groove
Complex set of nerves serving the upper limbs and hands
brachial plexus
The C5-T1 rami surface location is
halfway up neck, behind sternocleidomastoid
Mx attaching to mastoid process, sternum, and clavicle
sternocleidomastoid
Anterior, middle and psoterior scalene form what triangle
scalene triangle
Anterior and middle scalene attach to what rib
first
Posterior scalene attaches to what rib
second rib
Gap formed by scalene triangle
scalene hiatus
Subclavian artery, brachial plexus travel through
scalene hiatus (scalene triangle)
Subclavian artery is superior/inferior to brachial plexus in scalene hiatus
inferior
Does axillary vein run through scalene hiatus
no
Rami proximal to brachial plexus
C5-T1
Swelling on dorsal root
dorsal root ganglia
Dorsal root ganglia contains
sensory nerve cell bodies
Dorsal and ventral roots unit to form what nerve
spinal nerve
Spinal nerve splits into what two rami
dorsal and ventral primary rami
Brachial plexus is composed of what rami
Ventral primary rami of C5-T1
Term for brachial plexus that starts at C4
prefixed
Term for brachial plexus that ends at T2
postfixed
C5-C6 unites to form what trunk
upper trunk
C7 ventral primary rami continues to form what trunk
middle trunk
C8-T1 ventral primary rami unite to form what trunk
lower trunk
Each trunk has what two divisions
anterior and posterior
All three posterior divisions of all three trunk unite to form what cord
posterior cord
Anteriod division of upper trunk and anterior division of middle trunk unite to form what cord
lateral cord
Anterior division of lower trunk continues to form what cord
medial cord
Cords of brachial plexus lies in what structure
axilla
Saran wrap around cords of brachial plexus and axillary artery
axillary sheath
Cords are named for their relationship to what vessel
axillary artery
Major nerve branching off lateral cord is called
musculocutaneous nerve
2 major nerves branching off posterior cord
axillary nerve, radial nerve
Major nerve branching off medial cord
ulnar nerve
Major nerve branching from both lateral and medial cord
median nerve
Dorsal scapular nerve is derived from what ramus
C5 ventral primary ramus
Dorsal scapular nerve innervates
Levator scapula, rhomboid major and minor
Nerve to subclavius innervates
subclavius
Nerve to subclavius come off what trunk
upper trunk
Suprascapular nerve comes off what trunk
upper trunk
Suprascapular nerve innervates what
supraspinatus, infraspinatus
Long thoracic nerve comes from what rami
C5,6,7
Long thoracic nerve innervates what
serratus anterior
Someone losing long thoracic nerve causes what problem
winged scapula
Latoral pectoral nerve comes from what cord
lateral cord
Lateral pectoral nerve innervates what
pectoralis major
Musculocutaneous nerve comes off what cord
lateral cord
Upper subscapular nerve, lower subscapular nerve, thoracodorsal nerve come from what cord
posterior cord
Thoracodorsal nerve innervates what mx
latissimus dorsi
Axial nerve and radial nerve come from what cord
posterior cord
Medial pectoral n, medial brachial cutaneous n, medial antebrachial cutaneous n come from what cord
medial cord
Medial brachial cutaneous n is sensory for what
arm (not forearm), from elbow to shoulder
Medial antebrachial cutaneous n is sensory for what
forearm
Ulnar nerve comes from what cord
medial cord
Ulnar nerve innervates what
mostly hand
Nerve emerging from T2 and anastomisis with medial brachial cutaneous nerve, does not do upper limb function
intercostobrachial cutaneous nerve
Nerrve that supplies general sensation to medial upper arm distal to axilla
intercostobrachial cutaneous nerve
Mnemonic for brachial plexus
Randy Travis Drinks Cold Beer Now
Randy Travis Drinks Cold Beer Now meaning
Rami, Trunks, Divisions, Cords, Branches, Now
Lateral cord is formed by what spinal cord segments
C5-C7
Medial cord is formed by what spinal cord segments
C8-T1
Posterior cord is formed by what spinal cord segments
C5-T1
Largest cord, from all threee divisions
posterior cord
Another word for arm
brachium
Arm begins and ends where
GHJ, HUJ
2 musculofascial compartments of arm
flexor and extensor compartments
Flexor compartment contains heads of what large mx
long head and short head of biceps brachii
Flexor compartment contains what mx
biceps brachii, coracobrachialis, brachialis
Origin of LH of biceps brachii
supraglenoid tubercle
Origin of SH of biceps brachii
coracoid process
Origin of coracobrachialis
coracoid process
Insertion of coracobrachialis
shaft of humerus
Action of coracobrachialis
shoulder flexion, adduction
Origin of brachialis
anterior humerus
Insertion of brachialis
ulna
Action of brachialis
elbow flexion
Tendon of long head of biceps brachii runs through what groove
intubercular groove
Friction of tendon of long head can cause
bicipital tendonitis
Ligament that holds tendon of long head in groove
transverse humeral ligament
2 attachment points of transverse humeral ligament
greater and lesser tubercle of humerus
Membrane that helps prevent bicipital tendonitis
glenohumeral synovial membrane
Mx in extensor compartment of arm
triceps brachii
Three heads of triceps brachii
long, lateral, medial
Origin of long head of triceps brachii
inner infraglenoid tubercle
Lateral head and medial head of triceps brachii do/do not act on shoulder
does not
Action of long head (crosses shoulder)
GHJ extension
Medial head and short head of triceps brachii originate at
posterior humeral shaft
Biceps brachii, brachialis, coracobrachialis are innervates by what nerve
musculocutaneous nerve
Lesion on musculocutaneous nerve can cause what problem
difficulty with elbow flexion
Musculocutaneous nerve pierces what mx
coracobrachialis
Swelling or scarring of coracobrachialis effects what nerve
musculocutaneous nerve
Triceps brachii innervated by
radial nerve
Problem with radial nerve can cause problem with
elbow extension
Fascia derived from pec maj, delt, l dors and attaches to humeral epicondyles
brachial fascia
Vein superficial to brachial fascia until deltopectoral groove
cephalic vein
Vein superficial to brachial fascia until axilla
basilic vein
Medial arm cutaneous nerve innervated by
medial brachial cutaneous nerve
Damage to axillary nerve weakes what mx
deltoid and teres minor
Damage to axillary nerve would cause numbness where
shoulder
Maverick nerve from T2 that supplies sensory to medial arm below axilla
intercostobrachial cutaneous nerve
Artery from aorta that goes toward arm
subclavian artery
Subclavian artery becomes what artery at lateral border of first rib
axillary artery
Axillary artery becomes what at lower border of teres major
brachial artery
brachial artery continues to what point
elbow
Brachial artery splits into what two arteries at elbow
radial and ulnar artery
When brachial artery splits more proximal than elbow
high bifurcation
Brachial artery run close to what nerve
median nerve
Brachial artery and median nerve runs in what terrain feature
crease between biceps and triceps brachii
Term for branches off brachial artery that supply mx in flexor compartment
muscular branches
Unlar collateral arteries, ulnar recurrent,
arterial branches of brachial artery
2 ulnar collateral arteries
superior and inferior
2 ulnar recurrent arteries
posterior and anterior
2 ulnar recurrent arteries run where
in front of and behind medial epicondyle
Medial anastomosis of elbow is omposed of what 2 arteries
ulnar collateral and ulnar recurrent arteries
Lateral anastomosis of elbow is composed of what 2 arteries
interosseous recurrent artery and radial recurrent artery
Artery that supplies extensor compartment of arm
profunda brachii artery
Profunda brachii anastomosis with
interosseous recurrent artery and radial recurrent artery
Profunda brachii artery runs with what nerve
radial nerve
Term for connective tissue that contains the brachial artery, medial and lateral brachial vein, basilic vein, median nerve, ulnar nerve, medial antebrachial cutaneous nerve
medial intermuscular septum
Term for connective tissue containing profunda brachii and cephalic vein, radial nerve, profunda brachii artery
lateral muscular septum
Nerve between biceps brachii and brachialis
musculocuntaneous n