Brachial nerves

symptoms of hyperabduction syndrome

extremity numbness and paresthesia (tingling)

what muscle does the nerve that originates from C5 of the supraclavicular region of the brachial plexus innervate

Levator scapulae, rhomboid major, and rhomboid minor

what nerves originate at the C5, C6, C7 root of the brachial plexus

Long thoracic nerve

what are the branches of the brachial plexus

Axillary nerve, Musculocutaneous nerve, Radial Nerve, Median Nerve, and Ulnar nerve (MURMA)

what is the origin of the dorsal scapular nerve in the brachial plexus

C5

which spinal nerves make up the superior trunk

C5 and C6

upper subscapular nerve origin and innervated muscle

C5 subscapularis

axillary nerve origin and innervated muscles

C5, C6 deltoid and teres minor

radial nerve origin

C5, C6, C7, C8, and T1

what spinal nerves contribute to the brachial plexus

C5, C6, C7, C8, and T1

musculocutaneous nerve origin innervated muscle

C5, C6, C7; coracobrachialis, biceps brachii, brachialis

lateral pectoral nerve origin and innervated muscle

C5, C6, and C7; pectoralis major

what is the origin of the suprascapular nerve in the brachial plexus

C5,C6

Medial pectoral nerve origin and innervated muscle

C8 and T1, Pecctoralis major and pectoralis minor

medial brachial cutaneous origin and cutaneous branch

C8 and T1; medial brachial cutaneous nerve

ulnar nerve cutaneous branches

Deep branch of ulnar nerve dorsal branch of ulnar nerve dorsal digital nerves common palmar digital nerves proper palmar digital nerves

what nerve originates from the C5 spinal nerve in the supraclavicular part of the brachial plexus

Dorsal Scapular nerve

members of the supraclavicular region of the brachial plexus

Nerve to subclavius, Dorsal nerve, suprascapular nerve, Long thoracic nerve

how many cords are there in the brachial plexus and what are there locations

3, lateral, posterior and medial relative to the axillary artery sheath

ulnar nerve innervated muscles

3rd and 4th lumbricals adductor pollicis abductor digiti minmi dorsal interosseous muscles palmar interosseous muscles Flexor carpi ulnaris flexor digitorum profundus flexor digiti minimi opponens digiti minimi palmaris brevis

what is the origin of the subclavius nerve in the brachial plexus

C5,C6

thoracodorsal nerve origin and innervated muscle

C6, C7, and C8; latissimus dorsi

lower subscapular nerve origin and innervated muscle

C6; Teres major

Which spinal nerves make up the middle trunk

C7

which spinal nerve make up the inferior trunk

C8 and T1

ulnar nerve origins

C8, T1

what 2 muscles does the brachial plexus exit the next between

Middle and anterior scalene muscles

what muscles do the nerves at the C5,C6, C7 root of the brachial plexus innervate

serratus anterior

musculocutaneous nerve cutaneous branch

superior lateral brachial cutaneous nerve

the supraspinatus and infraspinatus innervation can be traced back to what nerve of the brachial plexus, what is its origin

suprascapular nerve C5, C6

what nerves originate at the C5 and C6 spinal nerve in the supraclavicular region of the brachial plexus

suprascapular nerve and Nerve to subclavius

what muscles do the nerves that orginate at the C5, C6 root of the brachial plexus innervate

supraspinatus, infraspinatus, and suvclavius

what area of skin does the dorsal digital nerve relate to

dorsal 4th (lateral aspect) and 5th fingers

the superficial branch of the radial nerve relates to which region of skin

dorsal handthumb through medial 3rd finger

the levator scapulae, rhomboid major, and rhomboid minor can be traced back to what nerve of the brachial plexus, where does that nerve orginate in the brachial plexus

dorsal scapular nerve in the C5 root of the bracial plexus

radial nerve cutaneous branch

inferior lateral brachial cutaneous nerve posterior brachial cutaneous nerve posterios antebrachial cutaneous nerve superficial branch of radial nerve

what region of skin does the common and proper palmar digital nerves relate to

lateral 4th finger and 5th

axillary nerve cutaneous branch

lateral antebrachial cutaneous nerve

median nerve origin

lateral root: C6, C7 medial root:C8, T1

the serratus anterior innervation can be traced back what nerve, what is the origin of that nerve in the brachial plexus

long thoracic nerve C5, C6, C7

medial antebrachial cutaneous origin and cutaneous branch

medial antebrachial cutaneous nerve

the subclavius innervation can be traced back to what nerve and what is the origin of that nerve in the brachial plexus root

nerve to subclavius C5,C6

Axillary lymph node dissection

often needed for staging & determining appropriate treatment of cancer -risk of damage to Long thoracic nerve & thoracodorsal nerve

which spinal nerves make up roots

C5, C6, C7, C8, and T1

aneurysm of axillary artery

-1st part of axillary artery - compresses TRUNKS of brachial plexus -causes pain, anesthesia (loss of sensation)

the long thoracic nerve orginates at what part of the brachial plexus root

C5, C6, C7

superior ("upper trunk") brachial plexus injury

-C5-C6 injuries -usually result from an excessive increase in the angle between the neck & shoulder - muscles paralyzed depend on locatio of injury -loss of sensation on lateral arm and forearm

radial nerve innervated muscles

-anconeus, abductor pollicis longus -brachialis, brachioradialis -Extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum extensor digiti minimi, extensor carpi ulnaris, extensor pollicis longus, extensor pollicis brevi, extensor indicis -supinator -triceps brachii

Erb-Duchenne palsy ("waiters tip") deformity

-often result of labor dystocia; excessive stretch of neck during delivery - deltoid, biceps, and brachialis are paralyzed -upper limb is adducted, arm medially rotated, elbow extended.

Hyperabduction syndrome " saturday night palsy"

-prolonged shoulder hyperabduction while sleeping or overhead painting - compression ofneurovascular structures as they pass under the coracoid process and pectoralis minor tendon

median nerve innervated muscles

1 and 2 lumbricals abductor pollicis brevis Flexor carpi radialis flexor digitorum profundus flexor digitorum superficialis flexor pollicis brevis flexor pollicis longus opponens pollicis pronator teres pronator quadratus palmaris longus

How many divisions of the brachial plexus are there and what are their locations

2 anterior and posterior

what is the order (general) of the breakdown of the brachial plexus

Roots, Trunks, Divisions, Cords, Branches (or Nerves)

the common and proper palmar digital nerves relate t which reion of the skin

palmar region thumb through medial aspect of 4th finger and fingertips of posterior 1st and 2nd finger, medial of 4th finger

what is the function of the brachial plexus

provides innervation (motor & sensory) for all muscles of the upper limbs and surrounding tissue

median nerve cutaneous branches

recurrent (palmar) branch of median nerve common palmar digital nerves proper palmar digital nerves

how many trunks are there and what are their locations relative to each other

3 trunks, superior, middle, and inferior

where are the roots of the plexus located

in the neck, most proximal portion of the plexus

winged scapula

wall push test, serratus anterior