Description The flexor pollicis brevis is the name of the tiny and broad intrinsic muscle of the hand. It is a part of the thenar muscles grouping together with the opponens pollicis, adductor pollicis, and abductor pollicis brevis. The heads of the flexor pollicis brevis are superficial and profound. The deep head, on the opposite…
Description A hand muscle called the adductor pollicis is located in the palm of the hand, particularly near the base of the thumb. The oblique head and the transverse head are their two components. The transverse head develops from the distal third of the ulna and the interosseous membrane, whereas the oblique head comes from…
Description The short intrinsic muscle is known as the abductor digiti minimi of the hand. It belongs to a group of muscles that impact the fifth finger. The muscles of the hypothenar region are the flexor digiti minimi brevis and the opponens digiti minimi. The main actions of the abductor digiti minimi are the abduction…
What is Abductor pollicis brevis muscle? The abductor pollicis brevis muscle is a hand muscle located at the base of the thumb that is responsible for abducting the thumb away from the palm. It is innervated by the median nerve and is important for thumb movement and grip strength. Injuries or conditions that affect this…
Description The extensor pollicis brevis muscle is a skeletal muscle situated in the hand that is responsible for extending the thumb at the carpometacarpal joint (base of the thumb). It arise from the distal 3rd of the posterior surface of the ulna bone and the interosseous membrane and inserts into the base of the proximal…
Description The flexor pollicis longus muscle is a deep muscle located in the anterior compartment of the forearm. It is one of the muscles responsible for flexing the thumb or pollex. The muscle originates from the anterior surface of the radius and the interosseous membrane, which connects the radius and ulna bones of the forearm….
Description Flexor digiti minimi brevis is a short intrinsic hand muscle. It corresponds to the group of muscles classified as the hypothenar muscles, together with the abductor and opponens digiti minimi. The hypothenar prominence is an extension that they developed over the tiny finger’s base. The flexor digiti minimi brevis goes from the flexor retinaculum…
The extensor carpi radialis longus muscle is one of the forearm muscles that is located on the lateral (outer) side of the forearm. It originates from the lateral epicondyle of the humerus and the supinator crest of the ulna, and inserts onto the base of the second metacarpal bone. The main function of the extensor…
Description The abductor pollicis longus muscle is a muscle located in the forearm, on the lateral side of the forearm. It is one of the muscles responsible for the movement of the thumb, specifically for abducting (moving away from the hand) and extending the thumb. The abductor pollicis longus muscle originates from the posterior surface…
Description The supinator muscle is a short, thick muscle located in the posterior compartment of the forearm, just above the wrist. It runs from the lateral epicondyle of the humerus (the bony bump on the outer elbow) to the proximal end of the radius (the smaller of the two forearm bones). The main function of…
