palm of hand Flashcards

(33 cards)

1
Q

what are the 8 carpal bones

A

hamate, trapezoid, trapezium ,capitate, scaphoid, pisiform, lunate, triquetrum

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2
Q

What lies distal to the carpals

A

Metacarpals

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3
Q

How many phalanges do we have

A

3 in each finger and two in thumb

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4
Q

What is a carpometacarpal

Joint

A

Between distal row of carpal bones and proximal metacarpals

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5
Q

Metacarpophalangeal joint

A

Between distal part of metacarpals and proximal phalanges

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6
Q

Interphalangeal joints

A

Between the phalanges

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7
Q

In what ways are the fingers able to move

A

Flexion
Extension
Abduction
Addiction

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8
Q

What movements can the thumb do

A
Flexion 
Extension 
Abduction 
Adduction
Opposition
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9
Q

Muscled of forearm that are prime flexors of the wrist

A

Flexor carpi radialis - 2nd metacarpal
Flexor carpi ulnaris- 5th metacarpal
Palmaris longus - inserts into palmar fascia

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10
Q

Which anterior compartment muscles flex the digits

A

Flexor digitorum superficialis
Flexor digitorum profundus
Flexor pollicis longus

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11
Q

What does the trapezium metacarpal articulate with

A

The trapezius

Carpal bone

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12
Q

role of the flexor pollicis longus

A

inserts onto the distal phalanx of the thumb

flexes the IP joint of the thumb

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13
Q

where does the palmaris longus attach onto

A

into palmar fascia

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14
Q

role of flexor digitorum superficialis

A

flex the fingers

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14
Q

role of flexor digitorum superficialis

A

flex the fingers

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15
Q

how does the FDS split

A

divides into two tendons and passes around the deep tendon and attaches to the middle phalanx

16
Q

what passes through the split of FDS

A

FDP

Flexor digitorum profundus

17
Q

role of the lumbricals

A

passes through the lateral side of the index finger

to bend and straighten the interphalangeal joints

18
Q

what does flexor pollicis longus do

A

inserts onto the dsital phalanx of the thumb

flexes the IP joint and is the only muscle that can do this

19
Q

what are the intrinsic muscles of the hand innervated by

A

ulnar and medial nerves

20
Q

what is the thenar eminence

A

fleshy part of the mass on palm of f hand at the base of the thumb

21
Q

what are the three muscles that act in the thenar eminence

A

flexor pollicis brevis- flexes the thumb
abductor pollicis brevis- abducts the thumb
opponens pollicis - oppose the thumb

22
Q

innervation of the thenar muscles

A

recurrent branch of median nerve

23
Q

which muscle moves the thumb and its innervation

A

adductor pollicis

ulnar nerve

24
what does the 1st metacarpal articulate with
trapezium
25
where does fds articulate with
middle phalanx
26
muscles of the hypo thernar eminence are innervated by what
ulna nerve
27
lumbricals , palmar interosseous and dorsal innervated by
ulna nerve
28
what are palmar and dorsal interosseus responsible for
palmar - adduction | dorsal- abduction
29
importance and innervation of palmaris brevis
for grip strength | ulnar nerve
30
innervation of the lumbricals
lateral 2 - median nerve | medial 2 by ulnar
31
what type of joints are the metacarpophalangeal
condyloid joints
32
type of joint - interphalangeal
hinge