★ Skin Structure, Growth, & Nutrition Quiz
What helps protect against UV rays?
A. sebum
B. keratin
C. elastin
D. melanin
Select your answer:
Topics:
Epidemiology Nerve Injuries in Oral & Maxillofacial Surgery Movement Sense of Sight General Microbiology and Immunology Sterile Medication Products Cells & Body Systems Biological Organisms Classification Discovery of DNA Lifestyle Diseases Careers in Health Care Cell Cycle Anxiety Disorders Effect of Exercise on Cardio Respiratory System & Muscular DiversityOther quiz:
EMS Systems › ViewProtocols and standing orders are forms of:
A. off-line medical direction.
B. on-line medical direction.
C. pre-arrival instructions.
D. stand-by guidelines.
Life Processes › View
what is the function of the capillaries
A. take blood toward heart
B. take blood away from heart
C. exchange gases
D. exchange fluids