biceps brachii


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
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.
enlarge picture
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.
Enlarge picture
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 ?
Sweiter and Carmichael [20] emphasised that the incidence of additional heads of biceps brachii is more on the right side reflecting the fact that there were more right-handed people than the left handed and that the muscle fibre developed with use.
Rupture of the biceps brachii tendon is relatively uncommon.
Behaviour of motor units in human biceps brachii during a submaximal fatiguing contraction.
2010) indicate that LFF of the knee extensors assessed at 24h after exercise recovers faster to baseline values than LFF of the biceps brachii muscle evaluated in our study, independently of the exercise bout.
Both the biceps brachii (a shoulder flexor) and the triceps brachii (an elbow extensor) were at ~50%.
En et caso 1: cadaver mascutino de 75 anos de edad, a nivet de ta extremidad superior derecha, ta cabeza supernumeraria det muscuto biceps brachii tenia insercion proximat en ta superficie antero-mediat det humero a 3,5 cm por encima de ta insercion proximat det muscuto brachiatis, a nivet det surco intertubercutar, taterat con retacion a ta insercion distat det muscuto pectoratis major y por debajo de ta insercion distat det muscuto tatissimus dorsi.
Rupture of the distal tendon of the biceps brachii.
22] described a rare anomaly, where the median nerve and the brachial artery passed through a tunnel formed by a third head of biceps brachii, where the nerve and artery seemed to be compressed.
A bipolar surface EMG signal was detected from the biceps brachii during each DCER muscle action.
sEMG signals were detected on seven muscles of the right shoulder after depilation and cleaning with alcohol wipes: anterior deltoid (AD), middle deltoid (MD), posterior deltoid (PD), pectoralis major (PM), upper trapezius (UT), biceps brachii (BB), and triceps brachii (TB).
Further, all literatures presented above were analyzed with EMG signal recorded from the biceps brachii during a static contraction.