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Related to Triceps surae: tibialis posterior, rearfoot valgus


any muscle having three heads, or points of attachment, but especially the triceps brachii at the back of the upper arm. One head originates on the shoulder blade and two on the upper-arm bone, or humerus. Uniting part of the way down the arm, the heads swell into the belly, or muscle proper. This tapers to a tendon that rounds the elbow and attaches to the ulna, the larger of the two forearm bones. Since contraction of the triceps straightens the arm, the muscle is called an extensor. It also helps lock the elbow when the forearm pushes forward against resistance. The triceps works in coordination with a flexor muscle, the bicepsbiceps
, any muscle having two heads, or fixed ends of attachment, notably the biceps brachii at the front of the upper arm and the biceps femoris in the thigh. Originating in the shoulder area, the heads of the biceps merge partway down the arm to form a rounded mass of tissue
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 brachii of the upper arm.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a muscle that arises from three heads. The triceps muscle of the arm, situated on the posterior surface of the humerus, extends the forearm at the elbow joint. The triceps muscle of the calf is at the back of the leg below the knee; it consists of the two-headed gastrocnemius muscle and the one-headed soleus muscle, and it flexes the foot at the ankle joint.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


any muscle having three heads, esp the one (triceps brachii) that extends the forearm
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Electromyography (EMG): Muscle EMG was recorded from triceps surae (soleus and medial gastrocnemius) during MVIC, evoked and ITT contractions.
The results showed a decrease in ankle clonus because of excessive hyperreflexia in extensors (triceps surae) (Fig.
A comparison of the triceps surae and residual muscle moments at the ankle during cycling.
Electrophysiological parameters varied in an identical way for the 3 heads of triceps surae. In view of the predominant role of the soleus muscle in the spastic equine foot phenomenon, only the variations observed in this muscle are presented here.
The triceps surae, tibialis anterior, erector spinae, and rectus femoris muscles had higher contributions to controller responses for disturbances in the AP dimension.
When combining the EMG amplitudes from all the conditions (Figure 4), the dominant leg elicited greater normalized EMG activity compared to the non-dominant for each triceps surae muscle (P=0.021(1), F=3.292, power: 0.749) and in when the triceps surae EMG data were summated within leg (P=0.05(1), F=7.877, power: 0.799).
to allow unilateral plantar and dorsiflexion motions only in order to isolate the triceps surae muscles, i.e., to stress the primary muscle group affected by intermittent claudication in PAD patients
Similarly, a higher number of repetitions and addition of resistance to the antagonistic muscles have both been shown to increase ROM following DS of the triceps surae (Mizuno, 2017).
(2007a), who reported that tendon and aponeurosis stiffness of the triceps surae was correlated to the maximal tendon force produced during MVIC.
A few articles reported the MEP for the flexor digitorum profundus (Hwang et al., 2007), triceps surae muscles (Kim et al, 2005; Sook Kim et al, 2002) and posterior compartment of the leg (Apaydin et al, 2008).
Control about the ankle during a mid-foot strike MFS or FFS is likely attributed to passive tension of the Achilles/Tibialis Posterior tendons and/or muscle action of the triceps surae (gastrocnemii and soleus) (Ahn et al., 2014).
As changes in ankle kinematics during the flexed knee exercise have not been previously quantified and can influence triceps surae activation during heel raises (HebertLosier et al., 2009b), it is not possible to explain the lack of change in Soleus muscle activation through surface EMG measures alone.