In fingerprint analysis, a pattern is described where ridges enter from one side of the pattern area, recurve, and pass out from the same side. There is no delta. This pattern is BEST classified as:
- A Ulnar loop
- B Whorl
- C Arch ✓
- D Double loop whorl
Correct answer: C. Arch
Explanation
Arches are characterised by ridges that enter from one side, rise in the centre, and exit on the other side without recurving. They are the only fingerprint pattern WITHOUT a delta (triradius) or core. Loops (ulnar or radial) have one delta and the ridges recurve and exit from the same side as entry. Whorls have two or more deltas and a central core; double loop whorls are a subtype of whorl. The description of entering from one side, recurving and exiting the same side without a delta perfectly describes an arch.
Reference: The Essentials of Forensic Medicine and Toxicology (Narayan Reddy), 34th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.