Stepladders Must Have

question 10

Multiple Choice

Stepladders must have

• A) a metal spreader or locking device.
• B) hooks to hold tools and equipment.
• C) a painted surface.
• D) rungs placed at varying intervals.

---

Definitions:

Effector

A muscle, gland, or organ that responds to a stimulus from the nervous system by producing a specific effect or action.

Receptor

Structural protein or glycoprotein molecule on the cell surface or within the cytoplasm that binds to a specific factor (chemical signal).

Midline

An imaginary line that divides the body into equal left and right halves.

Lateral

Pertaining to the side, often used to describe relative position or direction in anatomy and medicine.