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Topic: Brachialis muscle


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  Brachialis muscle - Wikipedia, the free encyclopedia
The brachialis (brachialis anticus) is a muscle in the upper arm that flexes the elbow joint.
The brachialis muscle is innervated by the musculocutaneous nerve, which runs on its superficial surface, between it and the biceps brachii.
The brachialis is the strongest flexor of the elbow.
en.wikipedia.org /wiki/Brachialis   (420 words)

  
 Biceps brachii muscle - Wikipedia, the free encyclopedia
These are the coracobrachialis muscle, which like the biceps attaches to the coracoid process of the scapula, and the brachialis muscle which connects to the ulna and the humerus.
It has also been proven through several tests into muscle group stimulation, that supination of the forearm with an isometric grip allows for close and normal-grip bench press exercises to have a much more profound effect on the biceps brachii and the clavicular portion of the pectorialis major.
Originally, supination of the forearm was attributed as a function of the brachioradialis muscle.
en.wikipedia.org /wiki/Biceps_brachii_muscle   (770 words)

  
 Human Anatomy - Lab 6 Step 5   (Site not responding. Last check: 2007-11-01)
Retract the biceps brachii muscle and examine the attachments of the brachialis muscle.
The brachialis muscle [probe] lies deep to the biceps brachii muscle [held by forceps].
The brachialis muscle originates from the anterior surface of the humerus and intermuscular septum and inserts into the coronoid process and tuberosity of the ulna.
ect.downstate.edu /courseware/haonline/labs/l06/050102.htm   (124 words)

  
 Back Muscle -- Recommendations and Resources   (Site not responding. Last check: 2007-11-01)
It is a thin, broad sheet of muscle undenreath the Clavotrapezius and deflecting it.
Muscle contraction is used to move parts of the body, as well as to move substances within the body.
The differences in characteristics of the smooth muscles and the striated muscles include: the fibers of the smooth muscles are not arranged regularly as the ones of striated muscles, smooth muscles are use to sustain longer contraction or even near permanent whereas the striated muscles are often used for short, burst activities.
www.becomingapediatrician.com /health/10/back-muscle.html   (1196 words)

  
 Building Those Big Guns
The muscles used in flexion of the arm are: 1) the biceps brachii; 2) the brachioradialis; 3) the brachialis; and 4) the pronator teres.
This muscle is not only responsible for flexion of the arm, but it also prontates the forearm from a supinated position to a more neutral position and also supinates the forearm from a pronated position to the neutral position.
The brachialis is used any time the arm flexes, however when the forearm is in the pronated (palm down) position, the biceps are less effective and the brachialis has to do much more of the work.
www.angelfire.com /tx/APATX/artilces/building_guns.html   (1231 words)

  
 Muscle Physiology - Joint Moment Arm
Mechanically, this is the distance from the muscle's line of action to the joint's center of rotation.
Let the angle, q, between the brachialis muscle and the ulna be relatively small, e.g., q=20°.
In this case, the perpendicular distance between the line of force application and the elbow ICR is shown by the dotted line in A and is equivalent to 5 cm x sin(20°) = 1.7 cm.
muscle.ucsd.edu /musintro/ma.shtml   (433 words)

  
 Muscle Training Program, Part 11
Muscles will hypertrophy as long as the load they have to work against is increased.
Because the muscle is exercised beyond its range of control, these latter techniques increase the chance of injury and are therefore not recommended.
For example, the specific action of the biceps muscle of the arm, which is actually a compound muscle containing an inner and outer group, is to bend the forearm at the elbow.
www.btrim4life.com /muscle-training-program11.html   (2488 words)

  
 NOTES: LECTURE 1A&B: INTRODUCTION: CONNECTIVE TISSUE & MUSCLE   (Site not responding. Last check: 2007-11-01)
Tensions generated in motor units of a given muscle are dictated by the size of the motor unit (the size of the individual fibers in the motor unit and the number of fibers in the motor unit).
Muscles that are typically postural (e.g., soleus muscles, some of the muscles along the vertebrae of the back) must be almost continually contracting to maintain our vertical positions when we are awake (i.e, walking or sitting).
What a muscle has the potential to do is not always realized, perhaps as the result of other muscles acting to counteract that action, or as a result of the nervous system selectively controlling parts of the muscle activation.
www.med.usf.edu /CLASS/JohnMc/LEC1A&B.html   (3351 words)

  
 Muscle   (Site not responding. Last check: 2007-11-01)
Muscle cells are those that generate tension (force) and when they activate (a.k.a., contract) they shorten and pull whatever is attached to their opposite ends closer together.
This simultaneous shortening of muscle fibers (cells) due to the shortening of myofibril organelles is the cause of muscle shortening.
Muscles of the shoulders and arms are not constantly active but are used intermittently, usually for short periods of time, to produce large amounts of tension such as in lifting and throwing.
www.bergen.org /ACADEMY/Bio/AnP/AnP1/AnP1Tri2/FIGS/MUSCLE/muscle.html   (7471 words)

  
 Strength Exercise Analysis Series   (Site not responding. Last check: 2007-11-01)
During elbow flexion the brachialis muscle is used in combination with other elbow flexors, regardless of whether the wrist is pronated or supinated.
The brachialis originates on the lower half and front portion of the humerus, crossing the elbow joint and inserting on the coronoid process of the ulna.
The muscle's attachment just below the elbow on the ulna is significant because its pull on the ulna, which does not rotate, allows the effectiveness of the brachialis to be undiminished regardless of hand position.
www.afpafitness.com /articles/stregthlink.htm   (2598 words)

  
 The Journal of Bone and Joint Surgery   (Site not responding. Last check: 2007-11-01)
The plane of cleavage and the retracted muscle fibers were consistent with a partial rupture of the brachialis muscle, suggesting a traumatic injury rather than a malignant lesion.
Isolated rupture of the brachialis muscle appears to be a rare injury that has not been well documented.
Muscle injuries are common and can usually be diagnosed on the basis of the medical history and the physical examination.
www.jbjs.org /Image_Quiz/2002/nov02/nov02quiz2.shtml   (356 words)

  
 SuperiorMuscle - 7 Tips for Massive Arms
In his opinion, if the arm's muscle mass is not balanced with the trapezius and deltoid development, the sheer weight of the arms will block its neural drive because the proper alignment of the upper extremities will be faulty.
For the six rep sets, I prefer exercises in which the muscles are in a pre-stretched position, as in incline curls for the biceps and overhead low pulley extensions for the triceps.
The brachialis muscle is better known among kinesiologists as the workhorse of elbow flexion.
www.superiormuscle.com /vbulletin/showthread.php?t=26960   (2672 words)

  
 Upper Limb Examination
Most of the muscles that act on the shoulder girdle and upper limb joints are supplied by branches of the brachial plexus.
Increasing muscle mass and tone is the aim of many people who work out at the gym.
The muscle attached to the whole length of the scapular spine is the:
mywebpages.comcast.net /wnor/ulexam.htm   (1651 words)

  
 Activation among the elbow flexor muscles differs when maintaining arm position during a fatiguing contraction -- ...
The EMG of the brachialis muscle was measured with
Burst rate for the brachialis muscle was greater than that for the other elbow flexor muscles throughout the fatiguing contraction.
Brachialis AEMG was greater throughout the fatiguing contraction compared with the other elbow flexor muscles, although similar at the endurance limit.
jap.physiology.org /cgi/content/full/94/6/2439   (6641 words)

  
 optimization1
We may then choose to eliminate that muscle force from the equilibrium equations to reduce the number of unknowns relative to the number of equations.
They based their idea of optimization based on the idea that muscle fatigue is related to the physiologic stress in the muscle, defined as the force divided by the physiologic cross-sectional area of the muscle.
However, it is important to note that the muscle stress as noted in these formulations is gross muscle stress, ie it is an average stress over the whole muscle.
www.engin.umich.edu /class/bme456/muscleforce/optimization1.htm   (4945 words)

  
 eMedicine - Hand, Nerve Compression Syndromes: Upper Extremity : Article by Bradon J Wilhelmi, MD
The nerve is superficial to the brachialis muscle and usually lies in a groove with the brachial artery, between the brachialis and biceps muscle.
At this level, the median nerve is on the distal aspect of the brachialis muscle.
This nerve innervates the extensor indicis proprius, extensor digiti quinti, extensor carpi ulnaris, abductor pollicis longus, extensor pollicis brevis, and extensor digitorum communis muscles.
www.emedicine.com /plastic/topic300.htm   (3620 words)

  
 Task Differences With the Same Load Torque Alter the Endurance Time of Submaximal Fatiguing Contractions in Humans -- ...
Identification of bursts of activity in the interference electromyographic activity (EMG) for the brachialis muscle during a fatiguing contraction in which the task was to maintain a constant elbow angle.
The AEMG for the elbow flexor muscles at the
Muscle activity is different for humans performing static tasks which require force control and position control.
jn.physiology.org /cgi/content/full/88/6/3087   (7611 words)

  
 98F Examination 3
During the repolarization phase of the action potential of skeletal muscle, the membrane potential is changing in the direction of the Na+ equilibrium potential.
During the contraction of skeletal muscle, when the myosin heads swivel, the thin myofilaments are pushed toward the ends of the sarcomere.
The force of muscle contraction is determined by the number of attachments of myosin to actin.
www.pages.drexel.edu /~mk55/98fexam3.htm   (935 words)

  
 How To Get Big Biceps,   (Site not responding. Last check: 2007-11-01)
The biceps, or more specifically the biceps brachii, shares that work with two other main muscles: the brachialis, which runs beneath the biceps, and the brachioradialis, which makes up the meaty part of the top of your forearm at the elbow joint.
To achieve full development, a common prescription in the gym is to incorporate movements that focus on each muscle, using a supinated (palms up) grip, a pronated (palms down) grip and a hammer (palms facing each other) grip.
Follow our directions, and be sure to avoid the most common mistake Marshall sees people make when they do curls: "performing the movement with limited elbow flexion while throwing the weight up and arching the back." In other words, they use their hips to power the bar up and push through repetitions with reckless speed.
www.mindnmuscle.com /biceps-articles/How-To-Get-Big-Biceps.htm   (1107 words)

  
 Arm
Horner syndrome occur in neonates with Klumpke palsy when the anterior root, spinal nerve, and proximal region of the ventral ramus are affected.
This is so because these structures carry the sympathetic fibers that innervate the constrictor muscle of the iris and the muscle of Müller.
Horner syndrome does not occurs with Kumpke palsy, which occur as the result of an injury beyond the ventral ramus because the sympathetic fibers leave the brachial plexus at this level (Figure 221.1).
pediatricneuro.com /alfonso/pg221.htm   (268 words)

  
 Body Building   (Site not responding. Last check: 2007-11-01)
Too much weight and improper form while performing the deadlift can cause the muscles in the lower back to shorten quickly, causing the ligaments to loosen and the muscles to take on 100% of the weight.
In contrast, the sole of the lunging leg should be flat on the floor as you lower your torso.
You should feel a stretch in the adductor muscles of the anchor leg during the lowering of the body to the floor.
www.ironmuscles.com /bodybuildingiron/execersise/exercisinggrossery.htm   (2377 words)

  
 Older Adults Use a Unique Strategy to Lift Inertial Loads With the Elbow Flexor Muscles -- Graves et al. 83 (4): 2030 ...
The upward slope on the elbow-angle trace indicates flexion as the load was raised, which corresponded to a shortening contraction by the elbow flexor muscles.
Average EMG for elbow flexor and extensor muscles of young and old subjects during the constant-load task for the lightest (10% 1-RM) and heaviest (35% 1-RM) loads.
Buchanan, T. and Lloyd, D. Muscle activity is different for humans performing static tasks which require force control and position control.
jn.physiology.org /cgi/content/full/83/4/2030   (6387 words)

  
 BeyondMass Archive - Brachialis muscle question..
But it is a perfect sign you are hitting a muscle that you have not hit directly in a long time, if ever.
Are you talking about the brachialis which lies underneath the biceps or the brachioradialis that is on your forearm.
To hit this muscle more than your biceps you need to have your palm in a more neutral postion to take the biceps partially out of it.
www.beyondmass.com /forums/showthread/t-2522.html   (670 words)

  
 AST Sports Science - QA   (Site not responding. Last check: 2007-11-01)
The brachialis is a large muscle beneath the biceps brachii.
It connects the shaft of the humerus (upper arm bone) to the ulna, the longest forearm bone) and is the strongest flexor of the elbow.
To concentrate more of the overload to the brachialis raise the weight and supinate your wrists away from your body.
www.ast-ss.com /print_page.asp?id=68&type=QA   (330 words)

  
 Bodybuilding.com - Matt Weik - The Best Bicep Workouts Of The Bodybuilding.com Forums.
The biceps brachii is a muscle on the upper arm that acts to flex the elbow.
Some people find that working the muscle directly (specific bicep exercises) gives them the best gains while others find that working it indirectly (working the back muscles which uses the biceps in the exercise as well) they get the best gains.
After doing the same exercises for weeks at a time, your muscles will get used to stimulus and will stop growing; therefore, it is best to change things up every couple of weeks to keep things fresh and new.
www.bodybuilding.com /fun/weik2.htm   (2848 words)

  
 Drawings of Anterior view of the muscles of the right arm (brachialis muscle, brachioradialis muscle, flexor digitorum ...
Anterior view of the muscles of the right arm (brachialis muscle, brachioradialis muscle, flexor digitorum profundus muscle, pronator quadratus muscle and lumbrical muscles),
anatomy, anterior, arm, brachialis, brachioradialis, digitorum, emergency, ems, flexor, flexors, lumbrical, medicine, muscle, muscles, orthopedics, profundus, pronator, quadratus, rehabilitation, right, surgery, therapy, sa107004 jpg, shoulder, illustration, illustrations, clip art icon, clipart icons, logo, line art, eps picture, pictures, graphic, graphics, drawing, drawings, artwork, vector art, royalty free, sa107004
Images include external body views, the skeleton, joints and muscles, head and neck (including the senses), circulatory, respiratory, nervous, urinary, reproductive, digestive and endocrine systems.
www.fotosearch.com /LIF112/sa107004   (291 words)

  
 Clip Art of Lateral view of the forearm showing the brachialis muscle and its skeletal attachments, - Search Clipart ...
Lateral view of the forearm showing the brachialis muscle and its skeletal attachments,
attachments, brachialis, flex, flexor, forearm, humerus, lateral, muscle, skeletal, tuberosity, ulna, unlar, 3d701002 jpg, illustration, illustrations, clip art icon, clipart icons, logo, line art, eps picture, pictures, graphic, graphics, drawing, drawings, artwork, vector art, royalty free, 3d701002
Topics include muscles of the forearm, thigh and gluteal region, body regions, surgical incisions, spinal curvatures, abnormal erythrocytes, dentistry, sinuses and bone injuries.
www.fotosearch.com /LIF127/3d701002   (261 words)

  
 Type III Supracondylar Frx - Wheeless' Textbook of Orthopaedics
- if the brachialis is buttonholed by the distal humeral spike, then the muscle
- open reduction is indicated for difficult closed reduction (especially when the brachialis has
Treatment of the displaced supracondylar fracture of the humerus (type III) with closed reduction and percutaneous cross-pin fixation.
www.wheelessonline.com /ortho/type_iii_supracondylar_frx   (342 words)

  
 brachialis muscle (anatomy) - General Practice Notebook   (Site not responding. Last check: 2007-11-01)
The brachialis muscle is the main flexor of the forearm.
It inserts into the coronoid process and tuberosity of the ulna over the elbow joint.
musculocutaneous nerve; main supply and predominantly C6 radial nerve; C7 root supplies branches to the lateral part of brachialis
www.gpnotebook.co.uk /simplepage.cfm?ID=-1777991623   (829 words)

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