上腕筋
WordNet
- of or relating to an arm; "brachial artery"
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/05/27 16:47:22」(JST)
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| Brachialis |
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Deep muscles of the chest and front of the arm, with the boundaries of the axilla. (Brachialis visible at bottom right.)
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Position of brachialis (shown in red).
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| Details |
| Latin |
musculus brachialis |
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Origin
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anterior surface of the humerus, particularly the distal half of this bone |
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Insertion
|
coronoid process and the tuberosity of the ulna |
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Artery
|
radial recurrent artery |
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Nerve
|
musculocutaneous nerve (C5, C6) |
| Actions |
flexion at elbow joint |
| Identifiers |
| Gray's |
p.444 |
Dorlands
/Elsevier |
m_22/12548498 |
| TA |
A04.6.02.018 |
| FMA |
37667 |
| Anatomical terms of muscle |
The brachialis (brachialis anticus) is a muscle in the upper arm that flexes the elbow joint. It lies deeper than the biceps brachii, and is a synergist that assists the biceps brachii in flexing at the elbow. It makes up part of the floor of the region known as the cubital fossa.
Contents
- 1 Structure
- 1.1 Variation
- 1.2 Innervation
- 2 Function
- 3 History
- 4 Additional images
- 5 See also
- 6 References
- 7 External links
Structure
The brachialis originates from the lower half of the front of the humerus, near the insertion of the deltoid muscle, which it embraces by two angular processes. Its origin extends below to within 2.5 cm of the margin of the articular surface of the humerus at the elbow joint. It also arises from the intermuscular septa of the arm, but more extensively from the medial than the lateral; it is separated from the lateral below by the brachioradialis and extensor carpi radialis longus muscles.
Its fibers converge to a thick tendon, which is inserted into the tuberosity of the ulna[1] and the rough depression on the anterior surface of the coronoid process of the ulna.
Variation
The muscle is occasionally doubled; additional nip to the supinator, pronator teres, biceps brachii, lacertus fibrosus, or radius are more rarely found.
Innervation
The brachialis muscle is innervated by the musculocutaneous nerve, which runs on its superficial surface, between it and the biceps brachii.[1] Part of it is also innervated by the radial nerve (proprioceptive branch) which allows it to be split during certain approaches to the arm. The divide between the two innervations is at the insertion of the deltoid.
Function
The brachialis flexes the arm at the elbow joint.[1] Unlike the biceps, the brachialis does not insert on the radius, and does not participate in pronation and supination of the forearm.[1]
History
Etymology
The brachialis muscle [2] and brachial muscle [3] can be considered as the anglicized variant of the Latin expression musculus bracchialis.[4] In classical Latin bracchialis means of or belonging to the arm,[5] and is derived from classical Latin bracchium,"arm".[5] The expression musculus brachialis is used in the current official anatomic nomenclature Terminologia Anatomica.[6]
Additional images
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Position of brachialis (shown in red). Animation.
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Horizontal section through the middle of upper arm. (Brachialis labeled at center left.)
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Muscles of lower limb, including insertion of brachialis tendon. Cross section. (Brachialis labeled at bottom left.)
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Left humerus. Anterior view.
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Bones of left forearm. Anterior aspect.
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Nerves of the left upper extremity.
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Brachialis muscle (labeled in green text)
See also
- This article uses anatomical terminology; for an overview, see anatomical terminology.
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
- ^ a b c d Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul (2005). Gray's anatomy for students. Philadelphia: Elsevier/Churchill Livingstone. p. 662,672. ISBN 978-0-8089-2306-0.
- ^ Dirckx, J.H. (Ed.) (1997).Stedman’s concise medical dictionary for the health professions. (3rd edition). Baltimore: Williams & Wilkins.
- ^ Anderson, D.M. (2000). Dorland’s illustrated medical dictionary (29th edition). Philadelphia/London/Toronto/Montreal/Sydney/Tokyo: W.B. Saunders Company.
- ^ Triepel, H. (1910). Die anatomischen Namen. Ihre Ableitung und Aussprache. Mit einem Anhang: Biographische Notizen.(Dritte Auflage). Wiesbaden: Verlag J.F. Bergmann.
- ^ a b Lewis, C.T. & Short, C. (1879). A Latin dictionary founded on Andrews' edition of Freund's Latin dictionary. Oxford: Clarendon Press.
- ^ Federative Committee on Anatomical Terminology (FCAT) (1998). Terminologia Anatomica. Stuttgart: Thieme
External links
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Wikimedia Commons has media related to Brachialis muscles. |
- Illustration: brachialis from The Department of Radiology at the University of Washington
- -1777991623 at GPnotebook
- Muscles/Brachialis at exrx.net
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Muscles of the human arms
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|
| Shoulder |
- deltoid
- rotator cuff
- supraspinatus
- infraspinatus
- teres minor
- subscapularis
- teres major
|
|
| fascia: |
- deltoid fascia
- supraspinous fascia
- infraspinous fascia
|
|
|
Arm
(compartments) |
| anterior |
- coracobrachialis
- biceps
- brachialis
|
|
| posterior |
- triceps brachii
- anconeus
- articularis cubiti
|
|
| fascia |
- axillary sheath
- axillary fascia
- brachial fascia
- intermuscular septa
|
|
| other |
- spaces
- quadrangular space
- triangular space
- triangular interval
|
|
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| Forearm |
| anterior |
| superficial: |
- pronator teres
- palmaris longus
- flexor carpi radialis
- flexor carpi ulnaris
- flexor digitorum superficialis
|
|
| deep: |
- pronator quadratus
- flexor digitorum profundus
- flexor pollicis longus
|
|
|
| posterior |
| superficial: |
- mobile wad
- brachioradialis
- extensor carpi radialis longus and brevis
- extensor digitorum
- extensor digiti minimi
- extensor carpi ulnaris
|
|
| deep: |
- supinator
- anatomical snuff box
- abductor pollicis longus
- extensor pollicis brevis
- extensor pollicis longus
- extensor indicis
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|
|
| fascia |
- bicipital aponeurosis
- common tendons
- antebrachial fascia
|
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| other |
|
|
|
| Hand |
| lateral volar |
- thenar
- opponens pollicis
- flexor pollicis brevis
- abductor pollicis brevis
- adductor pollicis
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| medial volar |
- hypothenar
- opponens digiti minimi
- flexor digiti minimi brevis
- abductor digiti minimi
- palmaris brevis
|
|
| intermediate |
|
|
| fascia |
| posterior: |
- extensor retinaculum
- extensor expansion
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| anterior: |
- flexor retinaculum
- palmar aponeurosis
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Index of muscle
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| Description |
- Anatomy
- head
- neck
- arms
- chest and back
- diaphragm
- abdomen
- genital area
- legs
- Muscle tissue
- Physiology
|
|
| Disease |
- Myopathy
- Soft tissue
- Connective tissue
- Congenital
- abdomen
- muscular dystrophy
- Neoplasms and cancer
- Injury
- Symptoms and signs
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| Treatment |
- Procedures
- Drugs
- anti-inflammatory
- muscle relaxants
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UpToDate Contents
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English Journal
- Anatomical study of the musculocutaneous nerve branching pattern: application for selective neurectomy in the treatment of elbow flexors spasticity.
- Cambon-Binder A1, Leclercq C.
- Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2015 May;37(4):341-8. doi: 10.1007/s00276-014-1371-x. Epub 2014 Sep 6.
- PURPOSE: Spastic flexion deformity of the elbow is mainly mediated by the biceps brachii and the brachialis muscles, innervated by the musculocutaneous nerve. Selective neurectomy of the musculocutaneous nerve showed promising results to relieve excessive spasticity in the long term but lacks of a c
- PMID 25193328
- Functional impact of vibratory proprioceptive assistance in patients with facioscapulohumeral muscular dystrophy.
- Ribot-Ciscar E1, Milhe-De Bovis V, Aimonetti JM, Lapeyssonnie B, Campana-Salort E, Pouget J, Attarian S.
- Muscle & nerve.Muscle Nerve.2015 Feb 11. doi: 10.1002/mus.24605. [Epub ahead of print]
- Introduction: We analyzed the effects of a rehabilitation method based on the use of vibratory proprioceptive assistance (VPA) in subjects with facioscapulohumeral muscular dystrophy. Methods: Eight subjects were given 1 month of mechanical vibratory treatment that consisted of 8 sessions of 40 min
- PMID 25678042
- Origination of the muscular branches of the median nerve: an electrophysiological study.
- Xu B1, Dong Z, Zhang CG, Zhu Y, Tian D, Gu YD.
- Neurosurgery.Neurosurgery.2015 Feb;76(2):196-200; discussion 200. doi: 10.1227/NEU.0000000000000585.
- BACKGROUND: In lower brachial plexus injury, finger flexion after brachialis motor branch transfer is relatively weak. We sought to screen potential branches of the median nerve from the upper trunk for strengthening finger flexion in addition to the brachialis motor branch. However, the spinal orig
- PMID 25549191
Related Links
- Brachialis - Musculus brachialis Casserio's Quick Links Images ‹ › Description Origin: Anterior surface of the humerus, particularly the distal half of this bone Insertion: Coronoid process and the tuberosity of the ulna Artery: The ...
- musculus brachialis musculus brachioradialis musculus bronchoesophageus musculus buccinator musculus buccinator musculus buccopharyngeus musculus bulbocavernosus musculus bulbospongiosus musculus caninus ...
★リンクテーブル★
[★]
- 英
- brachialis muscle (KH), brachialis (K), brachial muscle
- ラ
- musculus brachialis
停止
神経
機能
[★]
- 関
- brachium、upper arm