Upper Extremity: Part 1 Flashcards
Passage between the neck and the arm that provides protection for neovascular bundle supplying the upper limb.
Cervicoaxillary Canal
What is the most commonly fracture bone in the human body?
Clavicle
How is the Clavicle most commonly fractured?
Outstretched Hand
What is the weakest part of the Clavicle?
Middle
Lateral Third
Where do the Brachialis, Pronator Teres, and Medial head of the Triceps Brachii attach on the humerus?
Medial Supracondylar Ridge
Where do the Triceps Brachii, Brachioradialis, and Extensor Radialis Longus attach on the humerus?
Lateral Supracondylar Ridge
What nerve is in direct contact with Surgical Neck of the Humerus?
Axillary Nerve
What nerve is in direct contact with the Radial Groove of the Humerus?
Radial Nerve
What nerve is in direct contact with the distal end of the Humerus?
Median Nerve
What nerve is in direct contact with the Medial Epicondyle of the Humerus?
Ulnar Nerve
How many bones form the wrist or Carpus?
8
Name the 8 Bones of the Wrist
(So Long To the Pinky, Here Comes The Thumb)
Scaphoid
Lunate
Triquetrum
Pisiform
Hamate
Capitate
Trapezoid
Trapezium
What fascia covers the Deltopectoral Groove?
Pectoral Fascia
What travels through the Deltopectoral Groove?
Cephalic Vein
Fascia is thickened at the posterior ends of the Radius and Ulna and forms what?
Extensor Retinaculum
Fascia is thickened at the anterior ends of the Radius and Ulna and forms what?
Palmar Carpal Ligament
Deep and distal to the Extensor Retinaculum.
Flexor Retinaculum
(Transverse Carpal Ligament)
Composed of the Flexor Retinaculum and the Carpal Bones.
Carpal Tunnel
What two things pass through the Carpal Tunnel?
Median Nerve
Flexor Tendon
What are the two main superficial veins that originate from the Dorsal Venous Network?
Cephalic
Basilic
The Axilla act as a what for neurovascular structures?
Passageway
How many parts does the Axillary Artery have?
3
What is artery is the first branch of the Axillary Artery?
Superior Thoracic Artery
What 2 arteries make up the second part of the Axillary Artery?
Thoracoacromial
Lateral Thoracic
What arteries make up the third part of the Axillary Artery?
Subscapular
Anterior Circumflex Humeral
Posterior Circumflex Humeral
What is the Brachial Plexus formed by the union of?
Anterior Rami of C5 - C8 + T1
What muscles are supplied by C5?
Levator Scapulae
Rhomboid Major
Rhomboid Minor
Diaphragm
Supraspinatus
Infraspinatus
Subclavius
What is the characteristic position of an Injury to C5 and C6 of the Brachial Plexus.
Waiter’s Tip Position
This can occur in newborns due to excessive stretching of the neck during delivery which affects C5 and C6
Erb-Duchene Palsy
What artery is the main supply to the arm?
Brachial Artery
What nerve supplies anterior compartment of the arm?
Musculocutaneous Nerve
Injury to the Musculocutaneous nerve results in paralysis of what muscles?
Coracobrachialis
Biceps
Brachialis
What nerve supplies the posterior compartment of the arm?
Radial Nerve
Injury to the Radial nerve results in paralysis of what muscles?
Triceps
Brachioradialis
Supinator and Extensor Muscles of Wrist and Fingers
While the Ulnar never is vulnerable to injury, what is significant about it?
No branches in the arm.
What vein is found in the Cubital Fossa and is used for blood draw and angiography?
Median Cubital Vein
