Arm and Elbow

Question 1

What are the 2 superficial veins of the arm?

Answer 1

cephalic and basilic

Question 2

What connects the cephalic and the basilic vein ?

Answer 2

median cubital vein

Question 3

What groove contains the end part of the cephalic vein?

Answer 3

deltopectoral

Question 4

Muscles of the anterior compartment are supplied by the ___________ nerve.

Answer 4

musculocutaneous

Question 5

Muscles of the posterior compartment are supplied by the ________ nerve.

Answer 5

radial

Question 6

What is the major branch of the brachial artery?

Answer 6

deep brachial

Question 7

What passes through the triangular interval of the arm?>

Answer 7

deep brachial a. and radial n.

Question 8

What separates the humerus into lateral and medial?

Answer 8

spiral groove

Question 9

What two branches arise form the ulnar side of the brachial artery?

Answer 9

1. superior ulnar collateral

2. inferior ulnar collateral

Question 10

What are the two terminal branches of the brachial artery?

Answer 10

radial and ulnar

Question 11

Both median and ulnar nerve run through the ______ ______ groove.

Answer 11

medial bicipital

Question 12

Where does musculocutaneous run along after it has passed through coracobrachialis?

Answer 12

between the biceps brachii and brachialis

Question 13

What is the terminal branch of the musculocutaneous nerve?

Answer 13

lateral cutaneous nerve of forearm

Question 14

What is the role of the brachial branch of the median nerve?

Answer 14

sympathetic, targets brachial artery; overactivity of this nerve can cause Reynaud’s phenomenon

Question 15

The ulnar nerve passes through the ______groove after passing behind medial epicondyle of humerus.

Answer 15

ulnar (or cubital tunnel)

Question 16

What is the most superficial structure near the base of the axilla?

Answer 16

radial nerve

Question 17

Pressure leading to temporary paralysis of the radial nerve is called?

Answer 17

saturday night palsy

Question 18

How many joints are in the elbow complex?

Answer 18

3

Question 19

What are the surfaces in the humero-radial joint? What type of joint is it?

Answer 19

capitulum and head of radius (fovea capitis); synovial condylar

Question 20

What are the surfaces in the humero-ulnar joint ? What type of joint is it?

Answer 20

trochlea and trochlear notch; synovial hinge joint

Question 21

What are the surfaces in the proximal radio-ulnar joint? What type of joint is it?

Answer 21

head of radius and radial notch; synovial pivot

Question 22

What are the 5 intrinsic ligaments of the elbow joint capsule?

Answer 22

1. Lateral collateral
2. Medial collateral
3. Anterior oblique
4. Annular ligament
5. Quadrate ligament

Question 23

What is the one extrinsic ligament of the elbow joint?

Answer 23

oblique cord

Question 24

The ante version of the humerus and ulnar promote the full range of flexion in which two ways?

Answer 24

1. Bony contact of the coronoid process with the humerus occurs only when the two bones are parallel
2. Even during full flexion the two bones are separated by a space which lodges the muscles

Question 25

Are the flexors or extensors more powerful ?

Answer 25

flexors

Question 26

What is the most optimal position of the flexors? Least optimal?

Answer 26

most: full flexion of GH joint
least: extension of GH joint

Question 27

What is the most optimal position of the extensors? Least optimal?

Answer 27

most: extension of GH joint
least: flexed to 90 degrees