The only long head of the triceps is related to the moment of glenohumeral joint. This glenohumeral joint is more commonly called as shoulder joint. Whether this long head of the triceps is stretched or not, can not be commented.
The term "taut" can be synonymous with tight, tense, or stretched.
Flex is a synonym for flexed.
On his or her back with their knees flexed
Both can store potential energy by being stretched, or by being twisted. They are elastic and if flexed they will exert a force in trying to return to their normal untensioned state.
It depends on your position and if you are moving with or against gravity. If you are standing up right in anatomical position, and elbow extension is occurring after elbow flexion, then it is eccentric. When the elbow is moving into extension from flexion, it is moving downwards with the force of gravity. In order for this motion to occur, the biceps brachii has to lengthen, and the triceps brachii has to relax. The biceps brachii therefore is your primary mover. If elbow extension were occurring against the force of gravity (imagine your shoulder is flexed to 180 and your elbow is flexed, and you want to move it into extension while your shoulder is still flexed at 180), then it would be a concentric contraction and your primary mover would be your triceps brachii as it would be shortening to complete the motion. The biceps brachii would be your antagonist and it would be relaxing to allow the triceps to do its work. concentric= muscle shortening eccentric= muscle lengthening I hope this helps. I'm an OT student and this has been drilled into me.
The energy in a pulled bow is potential energy, specifically elastic potential energy. This energy is stored in the flexed limbs of the bow as it is stretched, ready to be released when the arrow is fired.
Keep your arms and legs Flexed. It might hurt a little at first.
When all major body parts are flexed it is the fetal position.
bendable
The sternocleidomastoid muscles are the ones that flex when the intercostals are flexed. This will also cause the scalene muscles to flex.
The flexed arm hang is a measure of muscular endurance. The "flexed" in the exercise description refers to the muscles flexing to perform the exercise, and not to any flexibility in range of motion.
A relaxed stomach is when the muscles are not engaged or tightened, while a flexed stomach is when the muscles are contracted and tightened.