Graduate / Capitalizing certain words in a graduate school essay [4]

Hey EF_Team 5 while you are at it...I'm in the same situation and was wondering if these words should be capitalized?

1. Self-contained Breathing Apparatuses and Air Purifying Respirators
2. Filtering Facepiece Respirators
3. Elastomeric Resipirator
4. Hypoxemia/Hypercapnia

Any input would be great.

Thank you!