★ Heart and Circulatory System Quiz
. Which structure in the heart serves as the natural pacemaker?
A. Aortic valve
B. Sinoatrial node
C. Left ventricle
D. Carotid artery
Select your answer:
Topics:
Heredity HHB Immunology Skin BMI, Body Composition and Body Types Sources Of Food Purpose and Function of the Skeletal System Understanding Psychology Nervous System Emergency Medicine Parts of the Body Hematology / Oncology Communicable Disease Central Nervous System Gastroenterology Nursing Who am Eye? Biology for EngineersOther quiz:
Name that Pathogen › ViewI can be prevented with vaccination.
A. TB
B. HIV/AIDS
C. Cholera
D. Malaria
Nail Disorders and Diseases › View
Separation of the nail plate and bed often due to injury or allergic reactions
A. Onychia
B. Onychomadesis
C. Onycholysis
D. Onychrrhexis