Arm anatomy Muscle Peace gesture Biology Diagrams Learn about the intrinsic and extrinsic muscles of the hand, their attachments, actions and innervation. See 3D models, dissection images and diagrams of the thenar, hypothenar, lumbricals and interossei muscles.
Learn about the 11 intrinsic and 15 extrinsic muscles in each hand that help with thumb, finger, and palm movements. See the muscle origin, insertion, action, and innervation for each muscle group.
Hand Anatomy: Bones, muscles, arteries and nerves Biology Diagrams
Learn about the structure and function of your hand and wrist, including the 19 bones, 34 muscles, nerves, tendons and ligaments that make them work. Find out how to care for your hand and wrist health and what conditions can affect them. The Hand Anatomy is complex and important to understand, it consists of 27 bones, 27 joints, 34 muscles and a lot of ligaments that connects joints together. To understand the complex hand anatomy, we will divide this article into: bones anatomy, joints anatomy, muscles and ligaments anatomy. Bony Hand Anatomy Metacarpals Bones
The skeletal muscles of the hand are responsible for the movement of the hand and fingers.[1] These muscles subdivide into two groups: the extrinsic and intrinsic muscles.[2][3] The extrinsic muscle group is called so because the muscle belly originates in the forearm.[2][4] The intrinsic muscle groups consist of smaller muscles solely located within the various hand osseofascial compartments The thenar muscles, which form the bulge of muscles evident at the base of the thumb, are essential to the hand's flexibility and gripping ability. One of these muscles, the opponens pollicis, moves the thumb across the hand to oppose the other fingers, allowing us to pinch a small object between the thumb and finger to pick it up.
The Muscles of the Hand Biology Diagrams
Learn about the hand muscles, their attachment, nerve supply and action. The hand muscles are divided into extrinsic and intrinsic groups, and include thenar, hypothenar, lumbrical and interossei muscles.
Learn about the structure and function of the hand, the most distal part of the upper limb. Explore the carpal, metacarpal and phalangeal bones, the thenar, hypothenar and lumbrical muscles, and the median, ulnar and radial nerves and arteries.
