Perhaps you mean antagonist and agonist muscles often occur in pairs, called antagonistic pairs. As one muscle contracts, the other relaxes. An example of an antagonisic pair is the biceps and triceps; to contract - the triceps relaxes while the biceps contracts to lift the arm.
What is that Cydia tweak or install where you can move your icons anywhere you want?
I believe the tweak your looking for is called 'Gridlock' but bear in mind you have to pay for the tweak :)
-Hope it helps!
This disease is known as myesthenia gravis.
Which describes smooth muscles?
Smooth muscles are found in all hollow organs and you have no control over their movements (involuntary control).
How many muscle in the human body?
There is not truly defined number for this question, but the approximation of muscles in a human body is said to be between 640 and 850 depending on the expret you consult.
^^^ this answer reflects skeletal muscles only.
The amount of actual muscles we have in total is somewhere in the tens of millions.
Every hair follicle on our body for example has an individual muscle , allowing us to have "goosebumps"
http://en.wikipedia.org/wiki/Arrector_pili_muscle
Even then , counting the sphincter muscles your capillaries use to regulate blood flow , it ends up in the billions...
http://en.wikipedia.org/wiki/Precapillary_sphincter
Where does flexion in the body take place?
Flexion in the body primarily occurs at joints, where the angle between two body parts decreases. Common sites of flexion include the elbows, knees, hips, and spine. For example, bending the elbow brings the forearm closer to the upper arm, while bending the knee reduces the angle between the thigh and the calf. Flexion is a key movement in various physical activities and exercises.
Which two features make up the hinge at the elbow?
One feature that makes up the hinge at the elbow is the trochlea of humerus. The other feature is the trochlear notch of the ulna.
What is quadriceps inhibition?
Quadriceps inhibition is a fancy term given to the inability to fully activate the quadriceps for whatever reason, the idea being that the quadriceps is "inhibited" in some way. This can occur after knee injury in general and it is specifically associated with ACL injury.