C4
dermatome on shoulder
C5
dermatome lateral/radial side of the arm
C6
dermatome lateral/radial side of the forearm
C7
dermatome middle three fingers
C8
dermatome medial/ulnar side of the hand and forearm
T1
dermatome medial/ulnar side of the forearm and arm
T2
dermatome ulnar side of arm and axillary floor
Medial
What side of the upper limb is innervated by the medial brachial cutaneous nerve joined by intercostobrachial nerve and the medial antebrachial cutaneous nerve
Lateral
What side of the upper limb is innervated by the upper lateral cutaneous nerve of arm (branch of axillary nerve), the lower lateral cutaneous nerve of arm (branch of the radial nerve), and the lateral antebrachial cutaneous nerve (continuation of the musc
Dorsal
What side of the upper limb is innervated by the posterior cutaneous nerve of arm (radial nerve) and the dorsal cutaneous nerve of forearm (radial nerve)
Cephalic vein
begins on the dorsum of the hand at the lateral (radial) side, ascends the forearm to the antero - lateral aspect at the elbow, then goes to the deltopectoral triangle pierces clavipectoral fascia to join axillary vein
Basilic vein
begins at the medial (ulnar) side of the dorsum of the hand, ascends to the antero-medial side at the elbow, shortly above the elbow the basilic vein pierces the deep fascia to join the brachial vein and forms the axillary vein
Median cubital vein
is formed in front of the elbow, connects basilic and cephalic veins, separated from the brachial artery and median nerve by the bicipital aponeurosis
Cubital (epitrochlear)
lymph nodes above the medial epicondyle of humerus
Axillary
lymph nodes that filter all lymph from upper limb
Brachial fascia
fascia that covers the muscles of the arm
Arm muscles
the lateral and medial intermuscular septa separate ______ into anterior and posterior compartments
Medial intermuscular septum
composed of two laminae, and provides passage for brachial vessels, median nerve, basilica vein and medial antebrachial cutaneous nerve
Pectoralis major
Which muscle originates at the medial part of clavicle, sternum, costal cartilages of ribs and upper rectus sheath, and inserts on the crest of the greater tubricle?
Pectoralis major
Which muscle aDducts and medially roates the arm?
Medial and lateral pectoral nerves
Which nerves innervate the pectoralis major?
Deltoid
What muscle originates at the lateral 1/3 of the clavicle, lateral acromion and crest of spine and inserts on the deltoid tuberosity?
Deltoid
What muscle aBducts the arm?
Axillary nerve
What nerve innervates the deltoid?
Teres major
What muscle originates at the inferior angle and axillary border of scapula and inserts at the crest of the lesser tubercle?
Teres major
What muscle aDducts and medially rotates the arm?
Lower subscapular nerve
What nerve innervates the teres major?
Supraspinatus
What muscle originates at the supraspinatus fossa of scapula and inserts at the greater tubercle?
Supraspinatus
What muscle aBducts the arm and assists the deltoid?
Suprascapular
What innervates the supraspinatus?
Infraspinatus
Muscle that originates at the infraspinatus fossa of scapula and inserts at the on greater tubercle.
Infraspinatus
What muscle laterally rotates the arm?
Suprascapular
What innervates the infraspinatus?
Teres minor
Muscle that originates at the lateral border of scapula and inserts at the greater tubercle.
Teres minor
What muscle laterally rotates the arm?
Axillary nerve
What innervates the teres minor?
Subscapularis
Muscle that originates at the costal surface of scapula and inserts on the lesser tubercle.
Subscapularis
What muscle medially rotates the arm?
Upper and lower subscapular
What innervates the subscapularis?
Coracobrachialis
Muscle that originates at the coracoid process and inserts halfway down the meidal aspect of humerus.
Coracobrachialis
Muscle that aDductst the arm.
Musculocuteneous
What innervates the coracobrachialis?
Biceps brachii
Muscle that originates at the from supraglenoid tubercle (long head) and coracoid process (short head) and inserts on the radial tuberosity.
Biceps brachii
What muscle flexes shoulder, forearm (at elbow) and supinates forearm?
Musculocuteneous
What innervates the biceps brachii?
Brachialis
Muscle that originates at the lower anterior half of humerus and inserts on the ulnar tuberosity.
Brachialis
What muscle flexes the forearm at the elbow?
Musculocutenous
What innervates the brachialis?
Triceps brachii
Muscle that originates at the from infraglenoid tubercle of scapula and upper and lower halves of humerus and inserts on the olecranon process.
Triceps brachii
What muscle extends the forearm at the elbow and extends the shoulder?
Radial nerve
What innervates the triceps brachii?
Brachioradialis
Muscle that originates at the lateral supracondylar lien of humerus and inserts near the styloid process of radius?
Brachioradialis
What muscle flexes forearm at elbow?
Radial nerve
What innervates the brachioradialis?
Pronator teres
Muscle that originates at the superficial head from medial epicondyle of humerus (deep head from medial side of coronoid process of ulna) and inserts on the midpoint of radial shaft?
Pronator teres
What muscle pronates the arm?
Median nerve
What innervates the pronator teres?
Suprascapular
C5,6 nerve from upper trunk, courses through scapular notchdeep to the superior transverse ligament, courses under supraspinatus and infraspinatus muscles, innervating both
Axillary
C5,6 nerve off posterior cord, travels with posterior humeral circumflex vessels, through quadrangular space, supplying teres minor and deltoid muscles
Radial
C5-T1 nerve largest branch of plexus, courses with deep brachial vessels in radial sulcus under the triceps brachii and in triangular interval to reach the lateral intermuscular septum, then into lateral wall of cubital fossa, supplies al muscles on dorsa
Musculocuteneous nerve
C5,6 from lateral cord, passes through or on the coracobrachialis, supplying it, then passes between biceps brachii and brachialis, supplying both, and continues as lateral antebrachial cutaneous nerve in company with the cephalic vein
Median nerve
C6-T1 from both medial and lateral cords, travels in company with brachial artery to cubital fossa, starts anterolateral but ends medial to the brachial artery, no motor branches in arm, supplies 6 � muscles in anterior forearm and 5 muscles in hand
Ulnar nerve
C8-T1 largest nerve from medial cord, enters posterior compartment of arm to pass behind medial epicondyle of humerus, supplies 1 � muscles in anterior forearm and intrinsic muscles of hand not supplied by median nerve