308:(quiet expiration is a passive process). They originate on ribs 2–12 and have their insertions on ribs 1–11.Their fibers pass anterior and superior from the upper margin of the rib and costal cartilage to the lower margin of the rib above. The internal intercostals are responsible for the depression of the ribs and bending them inward, thus decreasing the transverse dimensions of the thoracic cavity. The muscle fibers are directed downwards, forwards and laterally forming right angle with external intercostal muscle.
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294:. They originate on ribs 1–11 and have their insertion on ribs 2–12. The external intercostals are responsible for the elevation of the ribs and bending them more open, thus expanding the transverse dimensions of the
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359:, which also move the chest wall and have a function in inhalation, are also intercostal muscles, just not one of the three principal layers.
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also known as intercostalis intimus are deep layers of the internal intercostal muscles which are separated from them by a
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Muscle groups between the ribs which form and move the chest wall during breathing
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Both the external and internal muscles are innervated by the
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also known as intercostalis externus aid in quiet and forced
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407:"Intercostal muscle strain: Signs, treatments,remedies"
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at Human
Anatomy Online, SUNY Downstate Medical Center
304:also known as intercostalis internus aid in forced
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271:by helping expand and shrink the size of the
128:Intercostal muscles highlighted in dark red.
51:introducing citations to additional sources
347:. Their fibers run in opposite directions.
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41:Relevant discussion may be found on the
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188:Elevation or depression of the ribs
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283:There are three principal layers;
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34:relies largely or entirely on a
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312:Innermost intercostal muscle
302:Internal intercostal muscles
288:External intercostal muscles
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492:Gray's Anatomy 41st Edition
454:Essentials of Human Anatomy
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235:Anatomical terms of muscle
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481:Anatomy figure: 18:03-03
411:www.medicalnewstoday.com
339:), are supplied by the
369:anatomical terminology
337:thoracic spinal nerves
259:that run between the
204:musculi intercostales
62:"Intercostal muscles"
859:Muscles of the torso
834:clavipectoral fascia
748:transversus thoracis
695:thoracolumbar fascia
341:intercostal arteries
316:neurovascular bundle
165:Intercostal arteries
47:improve this article
757:serratus posterior
721:Intercostal muscles
253:intercostal muscles
117:Intercostal muscles
773:thoracic diaphragm
753:levatores costarum
632:intertransversarii
604:Transversospinales
452:Datta, AK (2018).
436:2017-12-06 at the
376:Thoracic diaphragm
367:This article uses
329:intercostal nerves
177:Intercostal nerves
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36:single source
32:This article
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612:semispinalis
584:iliocostalis
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415:. Retrieved
413:. 2020-01-10
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333:ventral rami
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323:Nerve supply
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273:chest cavity
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743:subcostalis
589:longissimus
193:Identifiers
801:subclavius
617:multifidus
417:2021-02-28
393:References
387:Inhalation
382:Exhalation
306:expiration
292:inhalation
265:chest wall
103:March 2021
73:newspapers
811:sternalis
736:innermost
650:trapezius
622:rotatores
279:Structure
269:breathing
154:Ribs 2–12
150:Insertion
144:Ribs 1–11
43:talk page
853:Category
766:superior
761:inferior
731:internal
726:external
660:rhomboid
594:spinalis
566:cervicis
553:splenius
434:Archived
431:(source)
363:See also
351:Function
561:capitis
530:of the
528:Muscles
257:muscles
216:D007366
184:Actions
134:Details
87:scholar
821:Fascia
709:Thorax
687:Fascia
532:thorax
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160:Artery
140:Origin
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670:minor
665:major
331:(the
239:[
228:13354
199:Latin
172:Nerve
94:JSTOR
80:books
544:Back
536:back
534:and
458:ISBN
355:The
261:ribs
251:The
211:MeSH
66:news
487:UCC
335:of
223:FMA
49:by
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
