biceps brachii


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Related to biceps brachii: triceps brachii, brachioradialis, Brachialis

biceps brachii

(brā′kē-ī′, -kē-ē′, brăk′ē-ī′, -ē-ē′)
n.
See biceps.

biceps brachii

[bī′seps brā′kē·ī]
Etymology: L, bis, twice, caput, head, bracchii, arm
the long fusiform muscle of the upper arm on the anterior surface of the humerus, arising in two heads from the scapula. It flexes the arm and the forearm and supinates the hand. Also called biceps, biceps flexor cubiti. Compare brachialis, triceps brachii.
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Biceps brachii

biceps brachii

A two-headed major muscle of the arm.

Long head
Origin
Supraglenoid tuberosity.
 
Insertion
Tuberosity of radius, bicipital aponeurosis to fascia of forearm.

Action
Flexes arm and forearm.
 
Short head
Origin
Apex, coracoid process of scapula.
 
Insertion
Tuberosity of radius, bicipital aponeurosis to fascia of forearm.
 
Action
Supinates hand.
 
Nerve
Musculocutaneous, coracobrachialis and brachialis nerves.
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BICEPS BRACHII

biceps brachii

The muscle of the upper arm that flexes the elbow and supinates the forearm.
See: illustration
See also: biceps

biceps

a muscle having two heads. There is a biceps muscle in both fore- and hindlimbs. See Table 13. See also bicipital.

biceps brachii
is a large fusiform muscle lying on the cranial surface of the humerus. Its function is to flex the elbow and integrate the actions of the shoulder and elbow. A medial displacement of the tendon of origin has been reported in dogs, causing a weight-bearing lameness.
biceps femoris
a large muscle of the caudolateral part of the thigh. Its function is to extend the hindlimb when propelling the body, during rearing or kicking. All of the joints are affected except those of the digit.
Rupture of the muscle causes acute hindlimb lameness in cattle. Resembles an intermittent upward fixation of the patella, with extension of the stifle and hock.
biceps reflex
is elicited in dogs by striking a finger placed on the biceps tendon on the craniomedial aspect of the elbow. An active reflex indicates intact spinal cord segments and nerve roots C6-8 and musculocutaneous nerve. It becomes exaggerated in disease of the upper motor neuron.
biceps tendon ossification
causes lameness in the horse. Is radiographically apparent.
References in periodicals archive ?
Dartnall TJ, Nordstrom MA, Semmler JG (2008) Motor unit synchronization is increased in biceps brachii after exercise-induced damage to elbow flexor muscles.
Avulsion of the lower biceps brachii tendon: analysis of fiftyone previously unreported cases.
Rupture of the distal biceps brachii tendon: isokinetic power analysis and complications after anatomic reinsertion compared with fixation to the brachialis muscle, J Shoulder Elbow Surg, 2003 Nov-Dec;12(6):607-11.
The results from the present study showed that the EMG intensity patterns from the biceps brachii were affected by both the concentric and eccentric exercise protocols.
The biceps brachii is a long fusiform muscle, placed on the front of the arm, and arising by 2 heads.
Kim SH, Ha KI, Kim HS and Kim SW (2001): Electromyographic activity of the biceps brachii muscle in shoulders with anterior instability.
The parabolic MMG wave-forms were analysed and statistically compared to determine whether PNS pulse duration influenced the recorded contractile properties of the biceps brachii.
To assess the EMG activity of selected muscles, seven surface electrodes (EMG Triode Electrode, Nickel-plated brass, interelectrode distance = 2 cm, Thought Technology, Montreal, Canada) were attached to the upper trapezius (UT), pectoralis major (PM), latissimus dorsi (LD), middle deltoid (MD), biceps brachii (BB) and triceps brachii (TB) muscles of the dominant side (Figure 2).
Thus, the purpose of this study was to use pattern classification techniques to examine the EMG intensity patterns for the biceps brachii during concentric versus eccentric muscle actions of the forearm flexors.
Using a semi-permanent marker, seven equidistant points were drawn along the median line of the biceps brachii and the blunted tip of the algometer was pressed at the same points each time measurements were taken.
2001) investigated effects of CrS following eccentric contractions of the biceps brachii.