An aponeurosis (/ˌæpənjʊəˈroʊsɪs/; plural: aponeuroses) is a type or a variant of the deep fascia, in the form of a sheet of pearly-white fibrous tissue that attaches sheet-like muscles needing a wide area of attachment.[1] Their primary function is to join muscles and the body parts they act upon, whether bone or other muscles.[2][3] They have a shiny, whitish-silvery color, are histologically similar to tendons, and are very sparingly supplied with blood vessels and nerves. When dissected, aponeuroses are papery and peel off by sections. The primary regions with thick aponeuroses are in the ventralabdominal region, the dorsal lumbar region, the ventriculus in birds, and the palmar (palms) and plantar (soles) regions.
The posterior lumbar aponeuroses are situated just on top of the epaxial muscles of the thorax, which are multifidus spinae and sacrospinalis.
Palmar and plantar aponeuroses and extensor hood
The palmar aponeuroses occur on the palms of the hands. The extensor hoods are aponeuroses at the back of the fingers. The plantar aponeuroses occur on the plantar aspect of the foot. They extend from the calcaneal tuberosity then diverge to connect to the bones, ligaments and the dermis of the skin around the distal part of the metatarsal bones.
Anterior and posterior intercostal membranes
The anterior and posterior intercostal membranes are aponeuroses located between the ribs and are continuations of the external and internal intercostal muscles, respectively.
Pennate muscles, in which the muscle fibers are oriented at an angle to the line of action, typically have two aponeuroses. Muscle fibers connect one to the other, and each aponeurosis thins into a tendon which attaches to bone at the origin or insertion site.
Function
Like tendons, aponeuroses attached to pennate muscles can be stretched by the forces of muscular contraction, absorbing energy like a spring and returning it when they recoil to unloaded conditions.[4] Also serving as an origin or insertion site for certain muscles e.g latissimus dorsi.
^McCracken, Thomas (1999). New Atlas of Human Anatomy. China: Metro Books. pp. 78–79. ISBN1-5866-3097-0.
^Azizi, Emanuel; Roberts, Thomas J. (2009). "Biaxial strain and variable stiffness in aponeuroses". The Journal of Physiology. 587 (17): 4309–18. doi:10.1113/jphysiol.2009.173690. PMC2754367. PMID 19596897.
December 29, 2022
aponeurosis, aponeurosis, ʊəˈr, plural, aponeuroses, type, variant, deep, fascia, form, sheet, pearly, white, fibrous, tissue, that, attaches, sheet, like, muscles, needing, wide, area, attachment, their, primary, function, join, muscles, body, parts, they, up. An aponeurosis ˌ ae p e nj ʊeˈr oʊ s ɪ s plural aponeuroses is a type or a variant of the deep fascia in the form of a sheet of pearly white fibrous tissue that attaches sheet like muscles needing a wide area of attachment 1 Their primary function is to join muscles and the body parts they act upon whether bone or other muscles 2 3 They have a shiny whitish silvery color are histologically similar to tendons and are very sparingly supplied with blood vessels and nerves When dissected aponeuroses are papery and peel off by sections The primary regions with thick aponeuroses are in the ventral abdominal region the dorsal lumbar region the ventriculus in birds and the palmar palms and plantar soles regions AponeurosisLumbar aponeurosis of the Visible Human MaleDetailsIdentifiersLatinAponeurosis plural Aponeuroses MeSHD000070606TA98A04 0 00 047TA22012FMA9722Anatomical terminology edit on Wikidata Contents 1 Anatomy 1 1 Anterior abdominal aponeuroses 1 2 Posterior lumbar aponeuroses 1 3 Palmar and plantar aponeuroses and extensor hood 1 4 Anterior and posterior intercostal membranes 1 5 Scalp aponeuroses 1 6 Pennate muscles and aponeuroses 2 Function 3 See also 4 ReferencesAnatomy EditAnterior abdominal aponeuroses Edit The anterior abdominal aponeuroses are located just superficial to the rectus abdominis muscle It has for its borders the external oblique pectoralis muscles and the latissimus dorsi Posterior lumbar aponeuroses Edit The posterior lumbar aponeuroses are situated just on top of the epaxial muscles of the thorax which are multifidus spinae and sacrospinalis Palmar and plantar aponeuroses and extensor hood Edit The palmar aponeuroses occur on the palms of the hands The extensor hoods are aponeuroses at the back of the fingers The plantar aponeuroses occur on the plantar aspect of the foot They extend from the calcaneal tuberosity then diverge to connect to the bones ligaments and the dermis of the skin around the distal part of the metatarsal bones Anterior and posterior intercostal membranes Edit The anterior and posterior intercostal membranes are aponeuroses located between the ribs and are continuations of the external and internal intercostal muscles respectively Scalp aponeuroses Edit The epicranial aponeurosis or galea aponeurotica is a tough layer of dense fibrous tissue which runs from the frontalis muscle anteriorly to the occipitalis posteriorly Pennate muscles and aponeuroses Edit Pennate muscles in which the muscle fibers are oriented at an angle to the line of action typically have two aponeuroses Muscle fibers connect one to the other and each aponeurosis thins into a tendon which attaches to bone at the origin or insertion site Function EditLike tendons aponeuroses attached to pennate muscles can be stretched by the forces of muscular contraction absorbing energy like a spring and returning it when they recoil to unloaded conditions 4 Also serving as an origin or insertion site for certain muscles e g latissimus dorsi See also EditAponeurosis of the obliquus externus abdominis Aponeurosis of the serratus posterior superior muscle Plantar aponeurosis Inguinal aponeurotic falx Bicipital aponeurosis Palatine aponeurosis FasciaReferences Edit Aponeurosis Dictionary at Google com aponeurosis at Dorland s Medical Dictionary McCracken Thomas 1999 New Atlas of Human Anatomy China Metro Books pp 78 79 ISBN 1 5866 3097 0 Azizi Emanuel Roberts Thomas J 2009 Biaxial strain and variable stiffness in aponeuroses The Journal of Physiology 587 17 4309 18 doi 10 1113 jphysiol 2009 173690 PMC 2754367 PMID 19596897 Retrieved from https en wikipedia org w index php title Aponeurosis amp oldid 1063403678, wikipedia, wiki, book, books, library,
