★ Respiratory System Quiz
Which body structure protects the lungs from outside harm?
A. Cartilage
B. Tiny Sacs
C. The Rib Cage
Select your answer:
Topics:
Immune Response Prokaryotic Cells and Viruses Bacteria, Viruses, Protozoa Fungi Enzymes and Digestion Neurological Disorders Transport system in Living Things (Human) Bacteria and Viruses First Aid Check up Brain, Neurons and The Nervous System Bacterial Cell Structure Defence against Infectious Diseases Musculoskeletal Skin Appendages HNBS Intern 3M MicroparaOther quiz:
Blood and Hematology › ViewWhat is the name of the condition where the heart is unable to pump out all of the blood it receives?
A. Myocarditis
B. Atherosclerosis
C. Heart failure
D. Mitral valve regurgitation
Musculoskeletal Vocabulary › View
sphincter: ringlike muscle that tightly constricts an opening or ______.
A. passageway
B. artery
C. vein
D. nerve