The fingers do not lie flat.
The arm is comprised of three long bones: the humerus, radius, and ulna. The humerus, or upper arm bone, connects the shoulder to the elbow, while the radius and ulna form the forearm. The radius and ulna are responsible for the rotational movements of the forearm, allowing for pronation (palm facing downwards) and supination (palm facing upwards).
Every page highlights visible bony landmarks (styloid processes, olecranon, pisiform, knuckles) and shows how they move or disappear under the skin during motion. This is gold for realism.
