How many long and slender bones are present in the metacarpus or palm of the hand?

The correct answer is five, as the human hand consists of five metacarpal bones that make up the palm, known collectively as the metacarpus. Each metacarpal bone is a long and slender bone that connects to one of the five fingers. This structure supports the hand's function, allowing for a wide range of motion and dexterity, particularly in grasping and manipulating objects.

The presence of five metacarpal bones is consistent with the five digits of the hand, where each metacarpal corresponds to a finger. Each of these bones plays a crucial role in the hand's anatomy, providing the necessary leverage and support for hand movements. Understanding the structure of the metacarpus is fundamental in fields related to anatomy, medicine, and various therapies involving the hand.