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Topic: Muscle fascicle

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NeuroSoma® - A Limited Pressure Muscle Spindle Myotherapy - About Muscle Spindle Sensory Receptors Location: Muscle spindles are distributed throughout skeletal muscle bellies, attached to the outside of the perimysial wall surrounding fascicles; so they are actually in the corridors between fascicles, along with lymph ducts, nerves, capillaries, and other structures. The spindle controls and reports on the extrafusal muscle fibers inside their fascicle, based on what the fascicle fascia says is going on inside. Structure: The spindle is a fusiform-shaped organ, encased in a connective tissue capsule in parallel with a fascicular group of muscles. www.neurosoma.com /musclespindle.html   (1257 words)

Encyclopedia: Fascicle Fascicle may also mean a bundle of skeletal muscle fibers surrounded by connective tissue. Fascicles, can refer to sections of a book, usually a reference work, that because of its length, is issued in parts so that the information may be made available to the public as soon as possible rather than waiting years or decades to complete the entire work. The Oxford English Dictionary was published in fascicles over many years, as was the Dictionary of American English. www.nationmaster.com /encyclopedia/Fascicle   (240 words)

In vivo determination of fascicle curvature in contracting human skeletal muscles -- Muramatsu et al. 92 (1): 129 -- Journal of Applied Physiology In vivo determination of fascicle curvature in contracting human skeletal muscles -- Muramatsu et al. Fascicle curvature of human medial gastrocnemius muscle (MG) was determined in vivo by ultrasonography during isometric contractions The fascicle was assumed to be the arc (29, 32, jap.physiology.org /cgi/content/full/92/1/129   (3091 words)

ASB: VARIATIONS IN NECK MUSCLE FASCICLE LENGTHS Fascicle lengths were normalized to optimal length and superimposed on an active muscle force-length curve for analysis. Documenting the physiological operating ranges of muscle fascicles provides insight into the part of the force-length curve on which muscles operate, and therefore how force-generating capacity varies with head position. This analysis showed that the operating ranges of neck muscle fascicles vary considerably among muscles and movement directions. asb-biomech.org /onlineabs/abstracts96/vasavada.html   (1039 words)

FASCICLE LENGTH AND PENNATION ANGLE OF THE HUMAN BICEPS FEMORIS MUSCLE AT REST AND DURING SUBMAXIMAL CONTRACTION Fascicle length increased from 5.64 (2.06)cm at 0/90 to 11.80 (1.80)cm at 90/0 during submaximal isometric contractions and from 7.31 (1.35)cm at 0/90 to 14.53 (2.13)cm at 90/0 with the muscle at rest. Comparing active to resting muscle at each of the positions, fascicle length decreased by 17% at each of the positions except 0/0 in which the fascicle length decreased 23%, and the pennation angle increased from 10% to 70%, and the magnitude of the increase was dependent upon the position. The purpose of this study was to determine the changes in fascicle length and pennation angle of the long head of the biceps femoris muscle (BFlh) between active contraction and resting muscle at various combinations of hip and knee position using ultrasonography. oak.cats.ohiou.edu /~chleboun/research/riegelabstract.html   (383 words)

Regional patterns of pectoralis fascicle strain in the pigeon Columba livia during level flight -- Soman et al. 208 (4): 771 -- Journal of Experimental Biology Work loops obtained from different regions of the pectoralis muscle in two pigeons plotted with fascicle length expressed as both strain (A,C) and length (B,D). In-series fascicle strain magnitude was also generally similar (in the cases shown for pigeon 3, distal fascicle strain averaged 3.5% less than that recorded from the proximal site), with differences in strain magnitude averaging less than 3.8% when proximal and distal sites were compared across all individuals at both locations sampled (see Table 2). Measurements of fascicle length and pinnation angle relative to the aponeurosis (shown in red) were determined from the images and referenced to a coordinate system at eight defined points along the SB and six points along the TB. jeb.biologists.org /cgi/content/full/208/4/771   (9127 words)

Sprint performance is related to muscle fascicle length in male 100-m sprinters -- Kumagai et al. 88 (3): 811 -- Journal of Applied Physiology Muscle fibers are packed in bundles, fascicles, which extend from the proximal to distal tendons. With a 10% shortening of fascicle length [0.81 cm (= 8.07-7.26 cm) and 0.66 cm (= 6.55-5.89 cm) for S10 and S11, respectively] within 250 ms in each muscle, excursion of attached tendon will be 0.83 cm (D1-D2) for S10 and 0.68 cm (D3-D4) for S11. Sprint performance is related to muscle fascicle length in male 100-m sprinters -- Kumagai et al. jap.physiology.org /cgi/content/full/88/3/811   (3365 words)

Dorlands Medical Dictionary ui, [TA]  aryepiglottic part of oblique arytenoid muscle: an inconstant fascicle of the oblique arytenoid muscle, originating from the apex of the arytenoid cartilage and inserting on the lateral margin of the epiglottis. culi, [TA]  palpebral part of orbicularis oculi muscle: the part of the orbicularis oculi muscle that is contained in the eyelids, originating from the medial palpebral ligament and inserting in the lateral canthus. lis, [TA]  alar part of nasalis muscle: the part of the nasalis muscle arising from the maxilla on either side above the lateral incisor tooth and attaching to the alar cartilage of the nose; it assists in opening the nasal aperture. www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_p_07zPzhtm   (3365 words)

Dorlands Medical Dictionary ui, [TA]  aryepiglottic part of oblique arytenoid muscle: an inconstant fascicle of the oblique arytenoid muscle, originating from the apex of the arytenoid cartilage and inserting on the lateral margin of the epiglottis. lis, [TA]  alar part of nasalis muscle: the part of the nasalis muscle arising from the maxilla on either side above the lateral incisor tooth and attaching to the alar cartilage of the nose; it assists in opening the nasal aperture. culi, [TA]  palpebral part of orbicularis oculi muscle: the part of the orbicularis oculi muscle that is contained in the eyelids, originating from the medial palpebral ligament and inserting in the lateral canthus. www.merckmedicus.com /pp/us/hcp/thcp_dorlands_content.jsp?pg=/ppdocs/us/common/dorlands/dorland/dmd-p-013.htm   (3365 words)

FASCICLE LENGTH AND PENNATION ANGLE OF THE HUMAN BICEPS FEMORIS MUSCLE AT REST AND DURING SUBMAXIMAL CONTRACTION Comparing active to resting muscle at each of the positions, fascicle length decreased by 17% at each of the positions except 0/0 in which the fascicle length decreased 23%, and the pennation angle increased from 10% to 70%, and the magnitude of the increase was dependent upon the position. The architecture of the human BFlh muscle (a biarticular muscle) is influenced by both hip and knee position and whether the muscle is active or at rest. The human BFlh muscle occupies a portion of the ascending, plateau, and descending limbs of the length-tension relationship in the range of motion studied. oak.cats.ohiou.edu /~chleboun/research/riegelabstract.html   (383 words)

Yasuo Kawakami Sugisaki, N., Kanehisa, H., Kawakami, Y., Fukunaga, T. Behavior of fascicle and tendinous tissue on medial gastrocnemius muscle during stretch-shortening cycle exercise of ankle joint. D., Moroz, J. Bilateral deficit in plantar flexion: relation to knee joint position, muscle activation, and reflex excitability. Kawakami, Y., 2004, Analysis of human skeletal muscles by ultrasound (Invited Lecture). www.f.waseda.jp /ykawa/works.html   (1391 words)

ABSTRfig Structural properties of these anti-gravity muscles are distinct oxidative region with a high percentage of slow twitch type I fibers, and within these regions a fascicle orientation which differs from the rest of the muscle. Different analytical approaches to describe the internal architecture of the triceps brachii muscle are presented, such as a 3D-analysis of the arrangement and length distribution or histochemical fiber typing. As a key feature in therian mammal locomotion, the triceps brachii muscle is mainly responsible for the dynamic joint stabilisation and fine tuning of the body´s height. www.lrz-muenchen.de /~kolb/dpg/ulm.00/abstrfig.htm   (1625 words)

Virtual Hospital: Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles, Brachioradialis (S&oumlmmerring), Irregular Muscle Fascicle from Brachioradialis to Antebrachial Fascia Virtual Hospital: Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles, Brachioradialis (Sandoumlmmerring), Irregular Muscle Fascicle from Brachioradialis to Antebrachial Fascia Irregular Muscle Fascicle from Brachioradialis to Antebrachial Fascia See related Provider Topics Anatomy, Anatomy and Cell Biology, Birth Defects, Bones, Joints and Muscles, Brain and Nervous System or Genetics/Birth Defects. www.vh.org /Providers/Textbooks/AnatomicVariants/Images/0084.html   (1625 words)

muscle properties of m. triceps brachii fascicle length (muscle fiber bundle length) of forelimb muscles (specifically m. triceps brachii MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Dear list members, we examine muscle properties (passive and active forces) of m. other research groups or literature, which investigate dynamics of small mammal fore leg muscles 2. isb.ri.ccf.org /biomch-l/archives/biomch-l-2001-04/00005.html   (109 words)

ASB: VARIATIONS IN NECK MUSCLE FASCICLE LENGTHS The experimentally obtained parameters were muscle fascicle and sarcomere length at the neutral head position, physiological cross-sectional area and pennation angle. For all muscles studied, fascicle length variations were greatest for those directions with the largest moment arms. The muscles included in this analysis were sternocleidomastoid, longus capitis, scalenus (anterior, medius, and posterior), trapezius, splenius (capitis/cervicis), semispinalis (capitis/cervicis), rectus capitis posterior major, rectus capitis posterior minor, obliquus capitis superior and obliquus capitis inferior. asb-biomech.org /onlineabs/abstracts96/vasavada.html   (109 words)

Paediatrics: distal blocks - radial nerve - The anterior sensory fascicle lies under the brachioradialis muscle and runs parallel to the external border of the brachial artery. - It lies between the external border of the tendon of biceps brachii muscle and the internal border of the brachioradialis muscle, and divides into two terminal fascicles. - The anterior sensory fascicle lies under the tendon of the brachioradialis muscle and goes through the aponeurosis. www.alrf.asso.fr /site_uk/pediatrie/ped_distaux_radial.htm   (812 words)

Movement detection at the human big toe -- Refshauge et al. 513 (1): 307 -- The Journal of Physiology Online With the ankle in extreme plantarflexion, nearly all of the movement of the toe extensor tendon measured near its insertion at the toe was transferred to the muscle fascicles whereas when the ankle was dorsiflexed none of the movement was transferred (Fig. To determine actual changes in fascicle length of the toe extensor, movements of extensor hallucis longus near the toe and at the muscle-tendon junction were measured during surgical exposure in one subject. The better movement detection at the toe with the ankle plantarflexed suggests that, in this condition, movements about the interphalangeal joint may be conveyed more faithfully to the muscle fascicles than when the ankle is in mid-range or dorsiflexed. jp.physoc.org /cgi/content/full/513/1/307   (4932 words)

UpToDate Sixth cranial nerve palsy in children The sixth nerve fascicle leaves the nucleus and travels within the substance of the pontine tegmentum, adjacent to the medial lemniscus, and adjacent to the corticospinal tract. The sixth nerve enters the orbit via the superior orbital fissure to innervate the lateral rectus muscle, which abducts the eye (show table 2) [1]. — Dysfunction of the sixth cranial nerve (abducens nerve) can result from lesions occurring anywhere along its path between the sixth nucleus in the dorsal pons and the lateral rectus muscle within the orbit. patients.uptodate.com /topic.asp?file=ped_opth/10889   (4932 words)

Neurological Aspects II The fibers innervated by each motor unit are not bunched together and are not all in the same fascicle, but are spread out over the muscle. The student should be able to list each of the muscle fiber types associated with each particular motor unit. Proprioceptors: transform mechanical distortion in the muscle or joint, such as any change in joint position, muscle length, or muscle tension into nerve impulses that enter the spinal cord and stimulate a motor response. jan.ucc.nau.edu /~kkt/EXS334/Neurological_Aspects_II.html   (4932 words)

connective.html The connective tissue fibers of the perimysium binds groups of muscle fibers, so that the skeletal muscle is divided into a series of compartments, each containing a bundle of muscle fibers called a fascicle. There are three layers of connective tissue which are part of each muscle; an outer epimysium, a central perimysium, and an inner endomysium. The individual fibers which make up the skeletal muscle are surrounded by endomysium, a delicate connective tissue. predator.pnb.uconn.edu /virtualtemp/muscle/micro-folder/connective.html   (4932 words)

EXCURSION IS IMPORTANT IN REGULATING SARCOMERE NUMBER IN GROWING ANIMALS Sarcomere number was measured in 12 small fascicles (6 superficial, 6 deep) teased from the central third of the TA (n=6/group). Sarcomere number was estimated by dividing fascicle length by sarcomere length. The results of this study support the hypothesis that muscle excursion (the change in muscle length required to produce the full range of joint motion) is important in regulating sarcomere number in growing animals. www.asb-biomech.org /onlineabs/NACOB98/213   (868 words)

Figures List Page Figure 2a Musculocutaneous (upper) nerve with bicep and brachialis muscle branches identified (vessel loops) and LABC is middle branch. Modified Oberlin procedure with transfer of redundant FCU fascicle of ulnar nerve to biceps branch of musculocutaneous nerve, augmented with transfer of medial pectoral nerve to brachialis branch with nerve graft. Medial pectoral nerve branches are transferred with short nerve graft(s) to proximal musculocutaneous nerve to allow regeneration of motor fibers to the brachialis muscle and through the LABC to the forearm. orthotextbook.net /view/templates/figure_List.asp?chapterid=hnnvbrpla   (409 words)

Figures List Page Medial pectoral nerve branches are transferred with short nerve graft(s) to proximal musculocutaneous nerve to allow regeneration of motor fibers to the brachialis muscle and through the LABC to the forearm. Modified Oberlin procedure with transfer of redundant FCU fascicle of ulnar nerve to biceps branch of musculocutaneous nerve, augmented with transfer of medial pectoral nerve to brachialis branch with nerve graft. Exposure for modified Oberlin procedure with musculocutaneous nerve demonstrating biceps, brachialis and LABC branches, and ulnar nerve with redundant FCU fascicle after internal neurolysis. www.orthopaediccare.net /view/templates/figure_List.asp?chapterid=hnnvbrpla   (409 words)

Encyclopedic Reference of Neuroscience Its wall consists of crossed-ply arrangement of collagen fibres which reorient on changing muscle sarcomere length [8]: Mean collagen fiber direction relative to longitudinal direction of the muscle fibres ranged from approximately 80 degrees at sarcomere length = 1.1 micron to approximately 20 degrees at 3.9 microns. (B) The epimysium or muscle fascia (also called perimysium externum). (A) Perimysium or fascicle fascia (also called perimysium internum). encref.springer.de /neuro/intramuscular.html   (409 words)

Load-displacement properties of the human triceps surae aponeurosis in vivo -- Magnusson et al. 531 (1): 277 -- The Journal of Physiology Online Therefore, the recent advance of using real-time ultrasonography to non-invasively determine fascicle movement during muscle contraction has provided a method for studying human aponeurosis and tendon tissue behaviour during isometric muscle contraction in vivo (Fukashiro et al. In addition, the measurement method suggests that the ankle joint motion needs to be accounted for during an 'isometric' contraction since even small amounts of joint rotation will contribute to tendon movement and thereby incorrectly add to the actual tendon displacement attributed to muscle tensile loading itself. The present study showed that the aponeurosis operates as one functional unit during an isometric contraction since the absolute amount of displacement, and consequently the stiffness, is similar throughout, as evidenced by the lack of difference in displacement for the proximal and distal aponeurosis of the triceps surae. jp.physoc.org /cgi/content/full/531/1/277   (409 words)

Figures List Page Medial pectoral nerve branches are transferred with short nerve graft(s) to proximal musculocutaneous nerve to allow regeneration of motor fibers to the brachialis muscle and through the LABC to the forearm. Modified Oberlin procedure with transfer of redundant FCU fascicle of ulnar nerve to biceps branch of musculocutaneous nerve, augmented with transfer of medial pectoral nerve to brachialis branch with nerve graft. The LABC in the proximal forearm will then be used in a later procedure to motor a free muscle transferred to the forearm for finger movement. www.orthotextbook.net /view/templates/figure_List.asp?chapterid=hnnvbrpla   (409 words)

Nonuniform shortening in the biceps brachii during elbow flexion -- Pappas et al. 92 (6): 2381 -- Journal of Applied Physiology A depiction of the internal aponeurosis (solid gray area) and muscle fascicle orientation (dashed gray lines) is superimposed on the image to orient the reader. Fascicles of the biceps brachii are expected to be of uniform length (5). The goal of this study was to examine the uniformity of shortening in the human biceps brachii muscle-tendon complex. jap.physiology.org /cgi/content/full/92/6/2381   (4845 words)

nursCE.com presents Basics of ECG Reading: Part I The Purkinje fibers spread among the fibers of the ventricular muscle fibers. It is a single-stranded fascicle, in contrast to the LPF. The bundle of His is formed by parallel muscle fibers, which are separated by connective tissue into a number of stripes. drw.addr.com /courses/1071/1071.htm   (4845 words)

BSC 1083 lecture notes Perimysium: dense fibrous connective tissue, surrounds each fascicle, and connects to epimysium. It separates individual muscle cells and connects to perimysium. Movement of epimysium, surrounding muscle, moves tendon which moves a body part. www.spjc.edu /spg/science/lancraft/bsc1083/notes/ch9notes.htm   (4845 words)

Change in length of relaxed muscle fascicles and tendons with knee and ankle movement in humans -- Herbert et al. 539 (2): 637 -- The Journal of Physiology Online With this assumption, rest lengths of muscle fascicles were, on average, about one-third greater in tibialis anterior than in gastrocnemius (39 ± 8 mm in tibialis anterior; 29 ± 7 mm in medial gastrocnemius). To investigate this possibility we pooled the data from the medial gastrocnemius muscles of nine subjects and, separately, the tibialis anterior muscles of six subjects by expressing both change in muscle fascicle length and change in muscle-tendon length as a percentage of the shortest muscle-tendon length (this provided greater statistical precision in the subsequent analysis). Stolov and Weillep (1966) measured elongation of the muscle belly and of the extramuscular part of the tendon as the relaxed rat gastrocnemius muscle was extended over a physiological range of lengths. jp.physoc.org /cgi/content/full/539/2/637   (4845 words)

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