Arm

Question 1

DR CUMA

Answer 1

Drop=Radial nerve
Claw=Ulnar nerve
Median nerve=Ape hand (or Apostol [preacher] hand)

Question 2

The capitulum attaches to the radius or ulna?

Answer 2

Radius !

radius vs. ulna ends CRAzy TULips:
Capitalum = RAdius
Trochlear = ULnar

Question 3

The common flexor origin is which epicondyle?

Answer 3

Flexor = Medial Epicondyle

Question 4

The olecranon fossa houses which bone?

Answer 4

olecranon of the Ulna

Question 5

LATERAL antebrachial cutaneous nerve is a continuation of which part of MARMU?

Answer 5

Musculocutaneous

Question 6

Muscles around the shoulder originate from which cervical spine?

Answer 6

C5 and C6

Question 7

What vein travels between Pec Major and Deltoid Muscle?

Answer 7

Cephalic Vein

Question 8

Biceps Brachii

Answer 8

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)

Question 9

Brachialis

Answer 9

O: anterior surface of humerus
I: Ulnar Tuberosity and coronoid process
A: flex forearm at elbow
N: Musculocutaneous and Radial (c7)

Question 10

Coracobrachialis

Answer 10

O: Coracoid Process
I: middle third of medial surface of humerus
A: flex and ADDuct arm at shoulder
N: musculocutaneous

Question 11

What is the bicipital aponeurosis?

Answer 11

the flattening of the Biceps tendon, which provides protection for the the contents of the cubital fossa

1. Median Nerve
2. Brachial Artery (which splits into ulnar and radial a.)

Question 12

Triceps Brachii

Answer 12

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

Question 13

Anconeus

Answer 13

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

Question 14

What vein sits over the bicipital aponeurosis and is commonly used for venipuncture?

Answer 14

Median Cubital Vein

Question 15

Supinator

Answer 15

O:Lateral Epicondyle
I: proximal third of Radius
A: Supination
N: Radial (deep branch)

Question 16

Princeps Pollicis is a branch of which artery?

Answer 16

Radial Artery

Question 17

Where does the brachial artery split into two arteries?

Answer 17

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

Question 18

Once the Ulnar artery splits from the Brachial Artery it is named the _______ and _______

Answer 18

Posterior and Anterior interosseus Artieris

Question 19

What vein is most medial? Most lateral? What forms a bridge between them in the cubital fossa?

Answer 19

Medial = Basilic

Lateral = Cephalic

• Median Cubital Vein joins the two

Question 20

What fascia divides the arm into the anterior and posterior compartments?

Answer 20

Brachial Fascia

• each compartment shares innervation, blood supply, and have similar functions

Question 21

Name the Actions, Innervations, and Arterial Supply of the ANTERIOR COMPARTMENT of the arm

Answer 21

A: Flexion of arm and forearm
N: Musculocutaneous
B: Brachial Artery, anterior humeral circumflex artery

(corachobrachialis, brachialis, biceps)

Question 22

Name the muscles of the ANTERIOR COMPARTMENT of the arm

Answer 22

1. Coracobrachialis - flex/adduct
2. Brachialis - main flexor of FOREARM**
3. Biceps Brachii - flexion, SUPINATION

Question 23

Name the Actions, Innervations, and Arterial Supply of the POSTERIOR COMPARTMENT of the arm

Answer 23

A: Extension at elbow,
- adduction and extension of the arm
N: Radial N (wraps around humerus – danger*)
B: Deep Brachial Artery

(triceps, anconeus, brachioradialis)

Question 24

Name the muscles of the POSTERIOR COMPARTMENT of the arm

Answer 24

1. Triceps Brachii = extends FOREARM
   Long head - infraglenoid tubercle
   Lateral - upper 1/2 posterior humerus
   Medial: distal 2/3 of medial/posterior humerus
2. Anconeus - assist tricep in Extension
3. Brachioradialis - weak flexion when pronated

Question 25

What are the boundaries of the bicipital aponeurosis?

Answer 25

Lateral - Brachioradialis
Medial - Pronator Teres
Roof - bicipital aponeurosis, fascia, skin
Floor - Brachialis, supinator

Question 26

Median nerve is medial or lateral to the Brachial Artery in the cubital Fossa?

Answer 26

Medial