★ Immunology Quiz
The first line of defense against antigen is the _________ system.
A. respiratory
B. digestive
C. integumentary
D. lymphatic
Select your answer:

Topics:
Dementia Nervous System Breathing System EKG Medical Term Body Systems and Medical Sciences Hazards & Risks Salmonella vs E.coli Chest, Back, Abs Vessels Bacteria Structure Micro Immunology Lipid Metabolism Skin Appendages Health Related Fitness Foodborne IllnessOther quiz:
Anatomy of the Eye › View What part of the eye is this?
A. choroid
B. sclera
C. cornea
D. retina
Skeletal System › View
Where is the stapes located
A. The leg
B. Hand
C. Foot
D. Ear