ADDUCTOR POLLICIS MANUS Meaning and
Definition
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The adductor pollicis manus is a muscle located in the hand that is responsible for the movement and control of the thumb. It is part of the group of muscles known as the intrinsic muscles of the hand.
The term "adductor" refers to the muscle's function of adducting or bringing the thumb towards the palm of the hand. The word "pollicis" is derived from the Latin term "pollex", which means thumb. "Manus" is a Latin word that translates to hand.
The adductor pollicis manus muscle is primarily responsible for the adduction and medial rotation of the thumb, meaning it helps bring the thumb towards the palm and rotates it towards the middle of the hand. This muscle also assists in gripping and grasping movements by providing stability and strength to the thumb.
The adductor pollicis manus muscle is divided into two parts: the oblique and the transverse head. The oblique head originates from the bases of the second and third metacarpal bones, while the transverse head originates from the shaft of the third metacarpal bone. Both heads of the muscle insert into the base of the proximal phalanx of the thumb.
Overall, the adductor pollicis manus muscle plays a crucial role in thumb movement and is essential for the fine motor skills and dexterity of the hand.
