block I - surface marking & spotting

Question 1

median nerve in forearm spotting

Answer 1

shows when you list superficialis digitorum

Question 2

surface marking of axillary artery

Answer 2

1. Abduct the arm to 90°
2. Mark the midpoint of clavicle

Mark the pulsation point in the upper 1/3rd of the arm, midway between anterior and posterior axillary folds (kinda like where coracobrachialis is)

Join both points with a broad line

Question 3

surface marking of brachial artery

Answer 3

1. Put a point on the pulsation of the lower part of the axillary artery (so start from like coracobrachialis origin part)
2. Mark a point at the level of neck of radius (cubital fossa region) in the midline of the limb

Join these points

Question 4

surface marking of axillary vein

Answer 4

draw like axillary artery but medially

Question 5

surface marking of basilic vein

Answer 5

1. Put a point on the inner side of the arm half-way b/w the axilla & the medial epicondyle
2. Mark a point on the anterior surface of the forearm below the elbow towards the medial side

Join the above 2 points by a line

Question 6

surface marking of cephalic vein

Answer 6

1. Put a point in the deltopectoral groove below the coracoid process
2. Mark a point in front of the elbow in the groove b/w brachioradialis & biceps

Join these points by a line which first ascends up and then arches towards the first point

veins go opposite way from arteries

Question 7

surface marking of median nerve in arm

Answer 7

1. Draw the brachial artery
   The nerve is marked lateral to the artery in the upper half & medial to it in the lower half, crossing the front of the vessel in the middle

this one is in a sort of S shape

Question 8

surface marking of radial nerve in arm

Answer 8

1. Mark start of brachial artery (where axillary artery ends)
2. Join the insertion of the deltoid (midway point on posterior of arm) - this is the middle point I guess
3. Put a mark at the level of lateral epicondyle 1cm lateral to the tendon of biceps

Join these points by a line crossing the elevation produced by long & lateral heads of triceps

it goes also in a curve starting from coracobrachilais type region to lateral epicondyle

Question 9

surface marking of ulnar nerve

Answer 9

1. Mark midpoint of brachial artery by feeling its pulsations
2. Put a mark on the ulnar nerve on the back of the medial epicondyle by rolling it

Draw a line following the medial side of the brachial artery halfway down its course
The line should then diverge to join the point on the back of medial epicondyle

Question 10

surface marking of radial artery

Answer 10

1. mark point medial to biceps tendon at level of neck of radius
2. mark pulsation in anatomical snuffbox

Joint these points formed a curved line

Question 11

surface marking of ulnar artery

Answer 11

1. point opposite to the neck of radius
2. mark point at lateral edge of pisiform

mark these points - starts at elbow and then goes down into hand type

ulnar artery lies lateral to the ulnar nerve

Question 12

surface marking of median nerve in forearm

Answer 12

1. point at level of neck of radius but in the middle (like below cubital fossa)
2. point at wrist medial to flexor carpi radialis tendon

join points - goes straight down forearm