★ Cardiology Quiz
The “lub” sound (first heart sound) is caused by?
A. Opening of semilunar valves
B. Closure of AV valves
C. Closure of semilunar valves
D. Filling of atria
Select your answer:

Topics:
General Microbiology and Immunology Safety Terms Levels of Organization Linked Gene Surgical Vocabulary Digestion Digestive System and Nutrition Anatomy Bones Auditory and Vestibular Neurology Reproductive System Vocabulary Nervous and Endocrine System Musculoskeletal Injuries & Workstation Design Proteins, Amino Acids, & Enzymes Heterotrophic Nutrition Excretory and Musculoskeletal SystemOther quiz:
Muscular System › ViewWhich process describes the shortening of a muscle during contraction?
A. Isometric contraction
B. Eccentric contraction
C. Concentric contraction
D. Static contraction
Circulation and Excretion › View
What causes the Bohr shift?
A. changes in pH
B. changes in partial pressure of oxygen
C. hemoglobin concentration