What is the term for the small openings in the lid of a closed-head drum?

When a paramedic treats an unconscious patient, the provision of treatment is based on ________ consent

A) implied B) expressed C) res ipsa loquitur D) primum non nocere

Surgical instruments used to hold back the sides of a wound or incision for greater access are ____. 

A. retractors B. forceps C. curettes D. scalpels E. probes