Fingertips work through a complex interplay of skeletal structure, joints, and sensory receptors, allowing for fine motor skills and tactile perception.
Skeletal Structure of Fingers
Each finger (excluding the thumb) consists of three small bones called phalanges. The reference video mentions:
- Each finger has three phalanges.
- The thumb has two phalanges.
Interphalangeal Joints
The phalanges in each finger are separated by two joints. According to the reference:
- These joints are called interphalangeal joints (IP joints).
- These joints (IP joints) facilitate flexibility and movement in the fingers.
Hand Anatomy and Functionality
The functionality of fingertips relies on the skeletal structure and joints.
Here's a breakdown:
- Phalanges: Provide the bony framework for each finger.
- Interphalangeal Joints (IP joints): Allow the fingers to bend and flex, enabling grip and manipulation.
In summary, fingertips work due to the interaction of phalanges and interphalangeal joints, facilitating movements essential for dexterity.
