What is Opponens digiti minimi muscle? An intrinsic hand muscle is the opponens digiti minimi. It is a member of the hypothenar muscle group along with the abductor digiti minimi and flexor digiti minimi brevis muscles. Every one of the three muscles is situated in the hypothenar compartment of the hand. On the ulnar side…
What is Latissimus dorsi muscle? The muscle known as the latissimus dorsi (the lats muscle’ or ‘lats’) is the broadest in the human body. Except for the trapezius, it covers almost all of the muscles in the posterior trunk of the back. The latissimus dorsi muscle is a member of the superficial layer of the…
What are the Dorsal interossei muscles? The hand’s short bipennate intrinsic muscles are the dorsal interossei. Along with the palmar interossei muscles, they can be found on the dorsal side of the hand in the space between the metacarpal bones. The dorsal interossei muscles comprise four short muscles that connect to the adjoining sides of…
What are Palmar interossei muscles? The palmar interossei are the hand’s short, unipennate intrinsic muscles. Together with the dorsal interossei muscles, they occupy the spaces between the metacarpal bones and are located on the palmar surface of the hand. There are four muscles called palmar interossei that attach to the first, second, fourth, and fifth…
What is the Abductor digiti minimi muscle? The hand’s abductor digiti minimi is a short intrinsic muscle. Because it affects the fifth finger, it is part of a group of muscles called the hypothenar muscles. The opponens digiti minimi and flexor digiti minimi brevis are two additional hypothenar muscles. The abduction of the fifth finger…
What is Flexor digiti minimi brevis? The hand has a short intrinsic muscle called the flexor digiti minimi brevis. Along with the abductor and opponens digiti minimi muscles, it is a member of the hypothenar muscles group. Hypothenar muscles are situated on the ulnar part of the hand where they structure a rise over the…
What are the Lumbrical muscles of the hand? The four short intrinsic muscles of the hand that are arranged between the metacarpal bones and deep into the palmar fascia are referred to as the lumbrical muscles due to their worm-like appearance (lumbrical meaning in Latin is earthworm). The lumbrical muscles are one of the short…
What is Palmaris brevis muscle? The palmaris brevis is a small quadrangular muscle in the hand’s hypothenar area. Even though it is in this area, the palmaris brevis is not part of the hypothenar muscle group; rather, it is considered an exceptional superficial muscle of this area on its own. This muscle tightens the palmar…
What is Extensor pollicis brevis muscle? The extensor pollicis brevis muscle is a skeletal muscle located in the forearm that is responsible for extending the thumb at the carpometacarpal joint (base of the thumb). It originates from the distal third of the posterior surface of the ulna bone and the interosseous membrane, and inserts into…
What is Abductor pollicis longus muscle? The muscle known as the abductor pollicis longus can be found in the forearm’s posterior compartment. Along with the supinator, extensor pollicis brevis, extensor pollicis longus, and extensor indicis, it is one of the forearm’s five deep extensors. All of the deep extensor muscles, except for the supinator, cross…
