Main Parts of the Hand:-

Here are the main parts of the hand:  

### **1. Fingers**  

- **Thumb** (1st digit)  

- **Index finger** (2nd digit)  

- **Middle finger** (3rd digit)  

- **Ring finger** (4th digit)  

- **Little finger (Pinky)** (5th digit)  

### **2. Bones**  

- **Phalanges**: Bones of the fingers (each finger has 3, except the thumb, which has 2).  

- **Metacarpals**: Five long bones connecting the fingers to the wrist.  

- **Carpals**: Eight small bones in the wrist (e.g., scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate).  

### **3. Joints**  

- **Interphalangeal joints (IP joints)**: Between phalanges (PIP – proximal, DIP – distal).  

- **Metacarpophalangeal joints (MCP joints)**: Where fingers meet the palm.  

- **Carpometacarpal joints (CMC joints)**: Between metacarpals and carpals (thumb CMC is highly mobile).  

### **4. Palm**  

- The central, fleshy part of the hand.  

- Contains muscles (intrinsic hand muscles), tendons, and nerves.  

### **5. Wrist**  

- Connects the hand to the forearm.  

- Contains carpal bones and ligaments.  

### **6. Nails**  

- Protective plates on the fingertips.  

### **7. Skin & Creases**  

- **Thenar eminence**: Fleshy part at the base of the thumb.  

- **Hypothenar eminence**: Fleshy part at the base of the little finger.  

- **Palmar creases**: Lines on the palm (e.g., heart line, head line, life line in palmistry).  

### **8. Muscles & Tendons**  

- **Flexor tendons**: Allow fingers to bend.  

- **Extensor tendons**: Allow fingers to straighten.  

- **Intrinsic muscles**: Small muscles within the hand for fine movements.  

### **9. Nerves & Blood Vessels**  

- **Median nerve**: Controls thumb movement and sensation.  

- **Ulnar nerve**: Controls fine finger movements.  

- **Radial nerve**: Aids in wrist and finger extension.  

- **Digital arteries & veins**: Supply blood to fingers.  

Would you like details on any specific part?