Dissection 19

Question 1

What is colle’s fracture?

Answer 1

when the hand is forced into extreme dorsiflexion and the distal part of the radius breaks

Question 2

flexion and extension of the thumb occurs around the _____ axis

Answer 2

AP

Question 3

abduction and adduction of the thumb occurs around the _____ axis

Answer 3

transverse

Question 4

Which digit is uniaxial at the MP joint and which movements does it allow?

Answer 4

thumb; extension/flexion

Question 5

The median nerve innervates all of the nerves in the anterior forearm except?

Answer 5

The flexor carpi ulnaris and 1/2 of the flexor digitorum profundus

Question 6

What will you see in a median nerve injury?

Answer 6

Nerve injury results in sensory loss of lateral anterior and tips of posterior hand, thenar eminence atrophy, and derotatation of the thumb due to loss of the opponens pollicics muscle

Question 7

where do you see ulnar nerve injuries

Answer 7

Fracture of the medial epicondyle of the humerus and pisiform fracture

Question 8

what nerve injury gives you “claw hand”?

Answer 8

ulnar

Question 9

What nerve injury results in wrist drop?

Answer 9

radial

Question 10

which artery gives off the superficial palmar arch

Answer 10

ulnar artery

Question 11

the carpometacarpal joints of digits 2-4 allow_____ movement, the joint of digit 5 permits ______ and the joint of digit 1 permits ______

Answer 11

little movement, some flexion and lateral rotation, multiaxial

Question 12

The metacarpophalangeal joints of digits 2-5 are _____ joints, while the joint at digit one is a ____ joint

Answer 12

biaxial; uniaxial

Question 13

The interphalangeal joint is a _____ joint?

Answer 13

uniaxial

Question 14

what are the movements of the flexor carpi radialis?

Answer 14

flexes the wrist and abducts

Question 15

What movements does the flexor digitorum superficialis cause?

Answer 15

flexion at the PIP and MP joints

Question 16

What movements does the flexor digitorum profundus cause?

Answer 16

flexion at the DIP, PIP and wrist joints

Question 17

which posterior compartment muscles cause flexion of the wrist joint?

Answer 17

abductor pollicis longus and extensor pollicis brevis

Question 18

What muscles make up the anatomical snuff box?

Answer 18

abductor pollicis longus, extensor pollicis brevis, and extensor pollicis longus

Question 19

what nerve innervates the thenar muscles?

Answer 19

median

Question 20

what pollicis muscle is not considered part of the thenar muscle group?

Answer 20

adductor pollicis

Question 21

What nerve innervates the hypothenar muscles?

Answer 21

ulnar

Question 22

what are the attachments of the lumbrical muscles?

Answer 22

tendons of the flexor digitorum profundus and the extensor hoods

Question 23

What movements do the lumbrical muscles cause?

Answer 23

flex the MP joints and extend the DIP and PIP joints

Question 24

The ulnar nerve and artery give rise to ________ in the hand

Answer 24

superficial palmar arches