An extensor straightens part of your body.
An extensor muscle.
Extender
Extensor
A flexor is a muscle that causes a joint to bend. In contrast, an extension is a muscle that straightens a joint.
Extensor muscles open a joint and are the opposite to flexor muscles, which close it. I imagine triceps are extensor, while biceps are flexor.
extensor
The extensor digiti minimi extends the minimum digit, ie. it straightens the interphalangeal joints of the pinky finger.
the ciliary muscle is the smooth muscle of the ciliary body
It is the muscles that cause the body to move, by expanding and contracting by neural commands from the brain. The body moves, by expandong and contracting by neural command from the brain.One's brain sends electrical signals to stimulate contraction and relaxation of muscles, thus enabling movement of limbs. when the brain sends the signal to the muscle it causes the muscle to contract and relax when wanted.When one muscle contracts the other always relaxes as 2 muscles cannot contract at the same time.
To extend a muscle A MOTION IS MADE TO INCREASE AN ANGLE BETWEEN TWO BONES.
A flexor muscle.
A muscle that is an elevator raises or lifts a part.
Flexor