palm of hand Flashcards

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
Q

what does the 1st metacarpal articulate with

A

trapezium

25
Q

where does fds articulate with

A

middle phalanx

26
Q

muscles of the hypo thernar eminence are innervated by what

A

ulna nerve

27
Q

lumbricals , palmar interosseous and dorsal innervated by

A

ulna nerve

28
Q

what are palmar and dorsal interosseus responsible for

A

palmar - adduction

dorsal- abduction

29
Q

importance and innervation of palmaris brevis

A

for grip strength

ulnar nerve

30
Q

innervation of the lumbricals

A

lateral 2 - median nerve

medial 2 by ulnar

31
Q

what type of joints are the metacarpophalangeal

A

condyloid joints

32
Q

type of joint - interphalangeal

A

hinge