subject

Circulatory System

Biology ⇒ Human Biology

Circulatory System starts at 6 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Circulatory System. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
A patient has a blockage in the coronary arteries. Explain how this could affect the heart.
Calculate the cardiac output if the heart rate is 70 beats per minute and the stroke volume is 70 mL per beat.
Describe one way in which the structure of capillaries is adapted to their function.
Describe the main difference between systemic and pulmonary circulation.
Describe the path of blood flow through the heart, starting from the right atrium.
Explain the role of hemoglobin in the circulatory system.
Explain why a person with a damaged bone marrow may have problems with their circulatory system.
Explain why arteries have thicker walls than veins.
Explain why blood pressure is higher in arteries than in veins.
Name the blood vessels that carry blood away from the heart.
The heart is made up of how many chambers?
What is the function of the septum in the heart?
What is the main function of platelets in the blood?
A patient’s blood pressure is measured as 150/95 mmHg. Explain what these two numbers represent and why high blood pressure can be dangerous.
A person has a genetic disorder that causes their red blood cells to be abnormally shaped. Predict and explain how this might affect their circulatory system.
Calculate the pulse pressure if a person’s systolic blood pressure is 120 mmHg and diastolic blood pressure is 80 mmHg.
Describe the role of the pericardium in the functioning of the heart.
During vigorous exercise, the heart rate and stroke volume both increase. Explain how this affects the delivery of oxygen to the muscles.
Explain how the structure of the human heart ensures that oxygenated and deoxygenated blood do not mix.
Explain why the left ventricle of the heart has a thicker muscular wall than the right ventricle.