muscles of forearm anatomy and topography

muscles of forearm anatomy and topography


muscle of the forarm divide into anterioir
and posterioir group in anterioir group sperficial and deep muscle first sperficial muscle it
is musculus palmaris longus all sperficial muscle start from apicondyle of humers and
musculus palmaris longus go to palmar aponeuroses it is perform flextion of the hand next sperficialmuscle
musculus pronater terus the same like all other muscle start from medial epicondyle
and attach radious funstion it is clear because musculus pronater pronation and flextion in
elbow joint next mucle musculus carpi radialis next muscle musculus flexer digitorum sperficialis
go to fingers and divide into four tendons two finger from secong two fith and each tendon
go to finger divide into two and attach to medial phalange and in space between this
two braches of tendons pass tendon of deep flexor it is deep muscle musculus flexor digitorum
profundus it pass space between these two tendons and attach to distal phalanges and
last sperficial muscle it is musculus flexor carpi ulnaris one again palmaris
longus pronater terus flexer carpi radialis flexor digitorum sperficialis and flexor carpi
ulnaris now deep muscles first deep muscle it is musculus flexor pollicis longus go to
thumb and flextion of thumb another muscle i already said deep flexor digitorum profundus
it is all of this muscleand last deep muscle it is musculus pronator quadratus it is main
pronator additional pronator terus main pronator pronator euadratus it is present three grooves
sulcus radiialis it is between muscle flexor carpi radialis and musculus brachi radialis
it is brachii radialis and from posterioir group sulcus radialis next groove between
flxor carpi radialis and flexor digitorum sperficialis here it is sulcus medianus and
last groove betveen flexor digitorum sperficialis and flexor carpi ulnaris sulcus ulnaris now
posterioir surface of the forarm it also sperficial and deep muscles but sperficial muscle divide
into two groups radial its from radial side of forarm and ulnar group from ulnar side
of forarm in radial group first muscle its musculus brachioradialis it is musculus brachioradialis
it start from lateral epicondyle and attach to radious function of tis muscle it put our
hand in middle position between spination and pronation middle position if we perform
spination this muscle will take pronation if we perform pronation it protude middle
position next muscle musculus extensor carpi radialis longus and musculus carpi radialis
brevis that two muscle brachioradialis and extensor together form radial gruop of sperficial
muscle ulnar group it isi musculus extensor digitorum musculus extensor digitiminimi and
lateraly musclus carpi ulnaris thre muscle in ulnar group or sperficial muscle ectensor
digitorum extensor digitiminimi and extensor carpi ulnaris next deep muscle of posterioir
group it is musculus abductor policis longus next musculus extensor policis brevis next
muscle it is musculus extensor policis longus next it is musculus extensor indisis to index
second finger and last muscle here it is absent it below of muscle it is musculus supinater
on posterioir surface of forarm present fasia above of radial carpil joint it attach to
bones and form six canal under the retinaculum extensorum necessary to know which muscle
pass which tendon look herefirst canal it has two muscle abductor policis longus and
extensor policis brevis it is first canal second canal another two muscle musculus extensor
carpi radialis longus and extensor carpi radialis brevis this two muscle in second first canal
we start to count canal from palm to little finger clear first here two tendons two tendon
in second canal one tendon in third canal it is musculus extensor policis longus it
is third canal fourth canal extensor digitorum and extensor indicis together this muscles
fith canal one muscle musculus extensor digitiminimi and six canal extensor carpi ulnaris again
abductor policis longus and extensor policis brevis second canal extensor carpii radialis
longuus and brevis third canal extensor policis longus fourth canal extensor digitorum and
extensor indicis fifth canal extensor digitiminimi and six extensor carpi ulnaris next muscle
of the hand divide into three droup muscles of the thiner in the region of thumb muscles
of hypothiner in the region of little finger and muscle of the palmer surface of the hand
muscles of the thiner it first of most sperficial muscles here it is musculus abductor policis
brevis below of abductor it is musculus opponens pollicis it perform opposition next muscle
musculus flexor policis brevis and last muscle here it is
musculus adductor pollicis now muscles of hypothiner most sperficial muscle it is musculus
palmaris brevis and if u remember it is palmaris longus and here ir is palmaris brevis next
,muscle musculuus abductor digitiminimi may be present musculus opponens digitiminimi
and musculus flexor digitiminimi and muscle of palmer surface hand has four muscles which
has name musculi lumbricalis from secoond to fifth finger musculus lumbricalis that
is first muscle musculus lumbricalis it is second it is third
and fourth here it is absent this muscles start from tendon of musculus flexor digitorum
sperficialis surround metacarpil phalangeal joint and attach to dorsal surface to tendon
of extensor muscle extensor digitorum what is the function it perform flextion in metacarpil
phangeal joint and extetion in phalangeal joint this movment it is musculus lumbricalis
and last muscle impossible to see deepest muscle of hand musculi intropalmaris and musculi
lintrosidorsalis they perform abductionand adduction finger to middle finger that is
all what we can see on body but iwant to dram diagramthat is bones of the carpus
palmer surface it is present retinacolum flexorum that is ligament which attach to aminansia
carpi radialis and aminansia carpi ulnaris in place where reticolum attach it divide
in to two branches here annd here and form three canal first canal it is canalis capi
radialis second canalis carpi and third canal canalis carpi ulnaris first canal we have
only one tendon tendon of musculus flexor carpi radialis in second canal it has four
tendon of sperficial flexor four tendon of deep flexor and one tendon of musculus flexor
pollicis longus and in third canal canalis carpiulnaris it has only vessels and nerves
and it is necessary to know this eight tendon four of sperficial flexor and four of deep
surround with the help of vagina common vagina for all flexor and other vagina surround tendon
of musculus pollicis longus first vagina name of this vagina
it surround all of vessel has name vaginasynovialis tendon musculorum
flexorum flexor muscles synovial vagina for all if we draw another diagrame it is first
second third fourth and fifth finger and this vagina for flexor of the thumb it go to thumb
and common synivial vigina of all flexor it go only to little finger and this thre finger
has its own synovial vagina aand in time of lecture u saw the diagrame and what isimportant
if synovial vigina if u give blood from from which finger u give blood from ring finger
sometime middle finger it possible from this three finger it is possible to give blood
why because if we put infection in middle finger this only in the region of finger but we get infection in little
finger and in the region of thumb it spread to hand and go to forarm through synovial vagina it more dangerous
that is why if we give blood only three finger that is all.

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