Topics: Integumentary System Quiz
The substance produced by the skin that helps to prevent skin cancer by blocking UV rays from damaging DNA is
A. sebum
B. adipose
C. keratin
D. melanin
Select your answer:

Topics:
Nutrition in Animals Infectious Disease Anatomy and Physiology Biology for Engineers Forensic Pathology (Autopsy) Assessment Skin and Derivatives Urinary The Inflammatory Response Genetic Engineering Diabetes Carbohydrate Metabolism Histology HS Immunity & Cancer EMR - Trauma TrichologyOther quiz:
Lymphatic System › ViewWhich of the following is not a function of the lymphatic system?
A. Lymph nodes destroy old red blood cells.
B. Lacteals transport fatty acids and glycerol from the small intestine.
C. Lymph vessels return interstitial fluid into the circulatory system
D. Lymph transports lymphocytes throughout the body
Transport system in Living Things (Human) › View
Carbon dioxide is transported from __________________.
A. lungs to body cells
B. body cells to lungs
C. kidneys to lungs
D. brain to lungs