TBL 11- function anatomy of the wrist and hand

Question 1

Wrist Joint (Radiocarpal Joint)

ARTICULATION
capsule
synovial membrane
nerve supply

Answer 1

Question 2

ligaments of the radiocarpal joint (wrist joint)

attachments

Answer 2

Question 3

ligaments of the radiocarpal joint (wrist joint)

attachments

Answer 3

Question 4

motions of the wrist and what muscles

muscles that aid in adduction and abduction

Answer 4

Question 5

carpal tunnel

how is it formed and what passes through it?

Answer 5

flexor retinaculum attached to the trapezium and the pisiform

Question 6

Gynons canal

how is it formed and what passes through it?

Answer 6

between pisiform and hamate bone

Question 7

anatomical snuff box

floor and what passes through it

Answer 7

Question 8

common synovial sheaths and importance due to spread of infection

Answer 8

Question 9

how are the long extensor tendons kept in place?

Answer 9

Question 10

palmaris breves

location
origin
insertion
innervation
action

Answer 10

Question 11

palmar aponeurosis importance

Answer 11

important for the attachment of the skin

Question 12

what are the thenar muscles?

Answer 12

FAO and adductor pollis

Question 13

abductor pollicis breves

origin
insertion
innervation
action

Answer 13

Question 14

flexor pollicis breves

origin
insertion
innervation
action

Answer 14

Question 15

opponens pollis

origin
insertion
innervation
action

Answer 15

Question 16

adductor pollicis

origin
insertion
innervation
action

Answer 16

loss of the median nerve then the thumb will only be able to adduct

Question 17

movements of the thumb

Answer 17

Question 18

hypothenar muscles are innervated by the ______

Answer 18

Question 19

hypothenar muscles

origin
insertion
innervation
action

Answer 19

Question 20

lumbricals vs palmar and dorsal interossei muscles

Answer 20

Question 21

lumbrical muscles

origin
insertion
innervation
action

Answer 21

Question 22

action of the lumbrical muscles at the joints

Answer 22

notice there is not one in the 3rd digit because it is the midline

Question 23

Palmar interossei

origin
insertion
innervation
action

Answer 23

notice there is not one in the 3rd digit because it is the midline

Question 24

dorsal interossei

origin
insertion
innervation
action

Answer 24

Question 24

lumbrical vs dorsal interossei muscles

Answer 24

Question 24

flexor digitorium superficialis vs flexor digitorum profundas

Answer 24

Question 24

what are the joints of the hand

Answer 24

Question 25

the movements of the thumb are carried out by what muscles

Answer 25

Question 26

midcarpal joint

Answer 26

Question 27

Carpometacarpal and Intermetacarpal Joints

Answer 27

Question 28

Carpometacarpal Joint of Thumb

Answer 28

Question 29

metacarpophalangial joints

Answer 29

Question 30

metacarpophalangeal joints and what muscles move it

Answer 30

remember
extensor pollicis longus is in the forarm
extensor pollis breves in the thumb

Question 31

what are osteofibrous tunnels

Answer 31

Question 32

what is the pulp space in the thumb

Answer 32

Question 33

blood supply to the hand

Answer 33

we get more blood flow from the ulnar

Question 34

the lumbricals arise from ______

Answer 34

flexor digitorum profundus in the forearm

they insert at the extensor expansion of the corresponding finger

Question 35

what is the apex of the palmar aponeurosis

Answer 35

palmaris longus tendon and it is covered by the flexor retinaculum

Question 36

why are the lumbricals so important

Answer 36

for flexion at the metacarpophalangeal joints(not super important) and extension at interphalangeal joints (very important here!!!)

Question 37

muscles resposible for adduction of fingers

Answer 37

PAD

palmar interossei

they attach at the medial or lateral of the corresponding proximal phalanx

also help with flexion

Question 38

what muscles are responsible for abduction ?

Answer 38

dorsal interossei

also, help with flexion

attachments are in the 2, 3, 4 proximal phalanx

Question 39

where does flexor digitorium superficialis attach to?

where does flexor digitorium profundas attach to?

Answer 39

superficialis to the borders of the middle phalanx
(splits into 2 to allow the flexor digitorum profundas to pass through which will attach to the anterior base of the distal phalax.

Question 40

ligaments in mid carpal joint

Answer 40

anterior, posterior and interossei ligaments unite the bones

innervated by ulnar and radial nerve branches

small gliding movement

Question 41

what are the ligaments of the metacarpophalangeal joints?

Answer 41

palmar matacarpal ligaments

deep transverse metacarpal ligaments

collateral ligaments

metacarpophalangeal joint capsule

Question 42

where do the osteofibrous tunnels come from?

Answer 42

fibrous flexor sheath

Question 43

where does the index finger and the thumb get blood from?

Answer 43

the radial artery will give rise to princeps pollicis to supply thumb and the radialis indicis to supply the index finger