★ Blood Groups Quiz
What is the function of the valves in the heart?
A. To separate the chambers
B. To prevent backflow of blood
C. To prevent blockage in the heart
D. To separate the blood
Select your answer:
Topics:
Introduction to Histology Tissue Repair Pathology Unintentional Injuries Diabetes Mellitus Circulatory & Respiratory Fluid and Electrolytes Microbes Breathing System Heart Structure and Double Circulation Biology Parts of the Brain Cellular Components Hospitality Cholera Virus, Bacteria, ImmunityOther quiz:
Respiration, Immune System, Blood Cells › ViewWhy is the left wall of the heart have a thicker layer of muscle than the right side?
A. To stop the blood flowing backwards
B. To push the blood with more force at high pressure so it goes to all body cells.
C. To push the blood at high pressure to the lungs.
Diseases & Disorders › View
Which condition of asthma causes the tightening of the bands of muscles around the airways, decreasing airflow?
A. Excess mucous
B. Inflammation
C. Muscle constriction