This vessels crosses the anatomical snuff box, enters the hand and runs deep to the two heads of dorsal interosseous muscle

It Gives off:

• Radialis indicis
  
  
• Princeps pollicis
  
  
• Then continues to form the deep palmar arterial arch.
  The deep arch anastomoses with the deep branch of ulnar artery
  
  
• The arch gives off three metacarpal arteries which anastomose with common digital  branches of the superficial arterial arch
  
  
• Other branches anastomose with dorsal metacarpal arteries

The ulnar artery continues beyond the flexor retinaculum as the superficial arterial arch

This is often an incomplete arch

Braches

• Palmar digital artery to ulnar side of little finger
• Common digital arteries that supply adjacent fingers

• Formed by branches of radial, ulnar and anterior interosseous arteries.
  
  
• Gives off dorsal metacarpal arteries which then split to supply adjacent fingers
  
  
• Anastomose with palmar metacarpal branches from the deep palmar arch