[X]
01
Click on the structure to specify the target of your label
01
  • labels

Abductor pollicis brevis

Other Terms: Musculus abductor pollicis brevis, Muscle court abducteur du pouce

Muscle parts

None

Latin name

Musculus abductor pollicis brevis

Latin muscle parts

None

Group

Hand muscle – thenar group

Etymology

In English, this muscle’s name is the short muscle that leads the thumb away (from the palm). Abductor is a term that describes the function or action of the muscle. It literally means to draw or to lead away from and is derived from the Latin ab meaning “away from” and ducere meaning “to lead or to draw.” The Latin pollex meaning “thumb” arises from the Latin polleo meaning “to be strong,” as the thumb was the strongest of the fingers. Brevis is the Latin term meaning “short.” This is being used as a comparative reference to a longer muscle that does the same thing.

Origin

Flexor retinaculum and the tubercles of the scaphoid and trapezium bones.

Insertion

Base of proximal phalanx of thumb on radial side and the extensor expansion of the thumb.

Action

Abduction of the thumb.

Nerve supply

Median nerve (C8 and T1)

Blood supply

The superficial palmar branch of the radial artery and a small muscular branch of the radial artery supply the muscle with blood.

Latin

Musculus abductor pollicis brevis

French

Muscle court abducteur du pouce

Comments

Related Images

View All