Vessels Of The Hand

Question 1

Pathway of the ulnar artery

Answer 1

Enters the hand anterior to the flexor retinaculum, lateral to the pisiform, medial to the hook of the hamate (guyon canal), antero-lateral to the ulnar nerve

Question 2

What does the ulnar artery divide into?

Answer 2

Into a main branch, the superficial palmar arch and the deep palmar branch.

Question 3

Pathway of the radial artery

Answer 3

Curves dorsally around the scaphoid and trapezium
Crosses the floor of the anatomic snuff box.
Enters the palm between the heads of the 1st dorsal interosseous muscle, then turns medially between the heads of the adductor pollicis

Question 4

As it crosses the deep palmar space, what does the radial artery divide into?

Answer 4

Into a main branch- the deep palmar arch

And superficial palmar arch

Question 5

The deep palmar arch turns medially at the:

Answer 5

At the medially at the metacarpal bases to meet the deep palmar branch (off the ulnar)

Question 6

Where do the palmar metacarpals arteries form?

Answer 6

Over the metacarpals (duh)

Question 7

The superficial palmar arch gives off _____ ______ ____ to digits 2-4

Answer 7

Common palmar digital arteries

Question 8

The deep palmar arch gives off the: (3)

Answer 8

Palmar metacarpal arteries

Princeps pollicis artery and the radialic indicis artery

Question 9

What arteries anastomose to form paired proper palmar digital arteries?

Answer 9

The superficial palmar arch and the deep palmar arch

Question 10

Superficial and deep palmar arteries

Answer 10

Proper palmar digital artery
Common palmar digital artery
Superficial palmar arch
Deep palmar branch of ulnar artery
Ulnar artery
Princeps Pollicis artery
Deep palmar arch
Radial artery

Question 11

Superficial and deep palmar venous arches are ________ to the arterial structure

Answer 11

Parallel

Question 12

Dorsal metacarpal veins unite to form:

Answer 12

The dorsal venous network (superficial to the metacarpals)

Question 13

Ischemia of the fingers

Answer 13

Vasoconstriction of the fingers, causing the blood to stop moving to them so it can support more vital organs

Question 14

Causes of ischemia of fingers

Answer 14

Frostbite (appropriate ischemia)

Reynaud’s Disease (inappropriate ischemia)

Question 15

A vascular disorder that affects blood flow to the extremities which include fingers, toes, nose and ears when exposed to temperature changes or stress

Answer 15

Raynoud’s disease

Question 16

Raynoud’s disease is an exaggeration of:

Answer 16

Vasomotor responses- a hyper activation of the sympathetic system in response to cold or emotional stress

Question 17

Raynaud’s disease can lead to:

Answer 17

Tissue hypoxia

Question 18

With Raynoud’s disease, what causes the skin to turn blue?

Answer 18

Oxygen supply is depleated (venodilation, cyanosis)

Question 19

After the blood returns to the fingers, Raynaud’s disease can be accompanied by:
why?

Answer 19

Swelling and tingling

Possibly due to reactive hyperemia of the areas deprived of blood flow (local control)

Question 20

Primary Raynaud’s

Answer 20

Partly hereditary. Often develops in young women.

Only occurs by themselves and are not accompanied by other diseases

Question 21

Secondary Raynoud’s

Answer 21

Secondary to multiple diseases, usually connective tissue diseases.

Question 22

What type of Raynaud’s can progress to necrosis of the fingertips?

Answer 22

Secondary

Question 23

The tendons of the FDS and the FDP enter a common flexor sheath where?

Answer 23

Deep to the flexor retinaculum