Topics: Infection Detection Quiz
What are the four structures that help protect the body from infection?
A. skin, fingernails, mucus, elbow
B. fingernails, mucus, white blood cells, cilia
C. skin, mucus, white blood cells, cilia
D. skin, elbow, mucus, cilia
Select your answer:

Topics:
Dentistry Muscles Corona Composition of Blood and Blood Cells Digestive System Medical Terminology Bone Marrow Histology Muscle Anatomy Cell Membrane and Transport Musculoskeletal Injuries & Workstation Design Hospital Departments Sense of Sight Child Development Nutrition, Neuroscience & Mental Health Parathyroid Gland Smoking Related DiseasesOther quiz:
Muscular System › ViewMuscles are attached to bones by _____.
A. Ligaments
B. Tendons
C. Cartilage
D. Axons
Pollution › View
Where is pollution found on the earth?
A. only in the air
B. only on the land
C. only in the water
D. on land, in the air, and in the water