Arm Flashcards
DR CUMA
Drop=Radial nerve
Claw=Ulnar nerve
Median nerve=Ape hand (or Apostol [preacher] hand)
The capitulum attaches to the radius or ulna?
Radius !
radius vs. ulna ends CRAzy TULips:
Capitalum = RAdius
Trochlear = ULnar
The common flexor origin is which epicondyle?
Flexor = Medial Epicondyle
The olecranon fossa houses which bone?
olecranon of the Ulna
LATERAL antebrachial cutaneous nerve is a continuation of which part of MARMU?
Musculocutaneous
Muscles around the shoulder originate from which cervical spine?
C5 and C6
What vein travels between Pec Major and Deltoid Muscle?
Cephalic Vein
Biceps Brachii
O: LONG head = supraglenoid tubercle* short head = coracoid process of scapula I: Radial tuberosity A: flex and SUPINATE the forearm (along with supinator m.) N: Musculocutaneous Nerve (C5, C6)
Brachialis
O: anterior surface of humerus
I: Ulnar Tuberosity and coronoid process
A: flex forearm at elbow
N: Musculocutaneous and Radial (c7)
Coracobrachialis
O: Coracoid Process
I: middle third of medial surface of humerus
A: flex and ADDuct arm at shoulder
N: musculocutaneous
What is the bicipital aponeurosis?
the flattening of the Biceps tendon, which provides protection for the the contents of the cubital fossa
- Median Nerve
- Brachial Artery (which splits into ulnar and radial a.)
Triceps Brachii
O:
Long Head - infraglenoid tubercle*
Lateral Head - posterior humerus (above radial groove)
Medial Head - medial and posterior humerus distal 2/3 (below radial groove)
I: Olecranon Process of ULNA
A: Extension of forearm at elbow,
*Long head- stabilizes head of abducted humerus and extends/ADDucts arm at shoulder
N: Radial Nerve
Anconeus
O: Lateral Epicondyle I: olecranon and posterior proximal ULNA A: assist tricep in extension of elbow abduct ulna in pronation* (prevent from pinching within the olecranon fossa) N: Radial
What vein sits over the bicipital aponeurosis and is commonly used for venipuncture?
Median Cubital Vein
Supinator
O:Lateral Epicondyle
I: proximal third of Radius
A: Supination
N: Radial (deep branch)
Princeps Pollicis is a branch of which artery?
Radial Artery
Where does the brachial artery split into two arteries?
Cubital Fossa (surrounded by pronator teres, brachioradialis)
forms the Ulnar (dives deep) and Radial Artery (Lateral and anterior)
- radial artery travels with the radial nerve
Once the Ulnar artery splits from the Brachial Artery it is named the _______ and _______
Posterior and Anterior interosseus Artieris
What vein is most medial? Most lateral? What forms a bridge between them in the cubital fossa?
Medial = Basilic
Lateral = Cephalic
- Median Cubital Vein joins the two
What fascia divides the arm into the anterior and posterior compartments?
Brachial Fascia
- each compartment shares innervation, blood supply, and have similar functions
Name the Actions, Innervations, and Arterial Supply of the ANTERIOR COMPARTMENT of the arm
A: Flexion of arm and forearm
N: Musculocutaneous
B: Brachial Artery, anterior humeral circumflex artery
(corachobrachialis, brachialis, biceps)
Name the muscles of the ANTERIOR COMPARTMENT of the arm
- Coracobrachialis - flex/adduct
- Brachialis - main flexor of FOREARM**
- Biceps Brachii - flexion, SUPINATION
Name the Actions, Innervations, and Arterial Supply of the POSTERIOR COMPARTMENT of the arm
A: Extension at elbow,
- adduction and extension of the arm
N: Radial N (wraps around humerus – danger*)
B: Deep Brachial Artery
(triceps, anconeus, brachioradialis)
Name the muscles of the POSTERIOR COMPARTMENT of the arm
- Triceps Brachii = extends FOREARM
Long head - infraglenoid tubercle
Lateral - upper 1/2 posterior humerus
Medial: distal 2/3 of medial/posterior humerus - Anconeus - assist tricep in Extension
- Brachioradialis - weak flexion when pronated
What are the boundaries of the bicipital aponeurosis?
Lateral - Brachioradialis
Medial - Pronator Teres
Roof - bicipital aponeurosis, fascia, skin
Floor - Brachialis, supinator
Median nerve is medial or lateral to the Brachial Artery in the cubital Fossa?
Medial
