Select your answer:

Topics:
Ankle, Foot, & LL - Injuries Body Systems & Anatomical Terms Laparoscopic Surgery Cell - Fundamental Unit of Life Inheritance Tissue Repair Pathology Oncology Skin Appendages Germs Disease History of Medicine Asexual Reproduction Deaf Blind Human Brain Autoimmune DiseaseOther quiz:
The Blood › ViewWhich blood vessel has valves to prevent the back-flow of blood?
A. Veins
B. Arteries
C. Capillaries
Musculoskeletal System › View
What kind of muscle do you move on purpose?
A. voluntary
B. involuntary
C. cardiac
D. heart