Composed of layers of nourishing blood vessels, the ________ are the layer between the sclera and the retina

The __________ cartilage is a firm ring that forms the inferior part of the larynx.

A. cricoid B. thyroid C. laryngeal D. pyriform

Positively charged ions, such as sodium ions in extracellular fluid, are referred to as:

A) protons B) neutrons C) cations D) anions