Description The palmar interossei are the hand’s tiny, unipennate intrinsic muscles. They, together with the dorsal interossei muscles, occupy the spaces between the metacarpal bones and are located on the palmar surface of the hand.The palmar interossei are four muscles that connect to the first, second, fourth, and fifth fingers. On the third finger, there…
Description The dorsal interossei are the hand’s short bipennate intrinsic muscles. They may be situated on the dorsal side of the hand, between the metacarpal bones, and the palmar interossei muscles. The dorsal interossei muscles are made up of four small muscles that connect to the sides of metacarpals 1-4. They help in the flexion…
Description The opponens digiti minimi is an intrinsic hand muscle. It is related to the hypothenar muscle group, which also includes the abductor digiti minimi and flexor digiti minimi brevis muscles. Each of the three muscles is situated in the hand’s hypothenar compartment. They make the hypothenar eminence on the ulnar side of the palm,…
Description The hand’s tiny intrinsic muscle is known as the Opponens Pollicis. Along with the adductor pollicis, abductor pollicis, and flexor pollicis brevis, it is a part of the thenar muscles group. The thenar eminence is an eminence originating from the thenar muscles on the lateral side of the hand. The opponent’s pollicis runs through…
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….
