pronator
Pronation is the motion that turns the palm of the hand downward or backwards. It involves rotating the forearm so that the palm faces posteriorly or downwards.
The pronator teres muscle is a forearm muscle that plays a role in pronation (rotating the palm downwards), and not in supination (rotating the palm upwards).
The Trochlea Nerve (cranial nerve 4) controls the superior oblique muscle of the eye. It turns the eye laterally and downwards.
Pronation is the motion that turns the palm of the hand downward or backward.
supinator
Pronation
A movement that turns the palm downward is called pronation. This occurs when the forearm rotates, causing the palm to face downward or backward. Pronation is commonly involved in actions such as typing on a keyboard or pushing objects away. It contrasts with supination, where the palm faces upward.
Pronation
Moving the hand into a palm-down position involves wrist pronation. This movement is achieved by the pronator teres and pronator quadratus muscles, which rotate the forearm so the palm faces downwards.
supination..
The deltoid covers the shoulder. This triangular-shaped muscle lifts the arm or turns it.
pronation