AQA A Level PE Cardio-Vascular System

Which part of the heart receives deoxygenated blood from the systemic circuit?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the main function of the aorta in the human heart?

• To pump blood to the lungs

• To receive blood from the body

• To carry oxygenated blood to the body

• To carry deoxygenated blood to the heart

What is the function of the right atrium?

• To pump blood to the lungs

• To receive blood from the body

• To pump blood to the body

• To receive blood from the lungs

Which chamber of the heart pumps blood to the body?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the primary function of the bundle branches in the heart's conduction system?

• To initiate the heartbeat

• To transport impulses to the purkinje fibres

• To delay the impulse

• To generate electrical impulses

What is the term for the contraction of the heart's ventricles?

• Atrial systole

• Ventricular diastole

• Ventricular systole

• Atrial diastole

Through which nerve does the sympathetic nervous system send stimulation to the SA node?

• Accelerator nerve

• Vagus nerve

• Optic nerve

• Sciatic nerve

What is the heart rate trend during the recovery phase?

• Rapid increase

• Rapid decrease followed by slower decrease

• Constant rate

• Rapid decrease followed by rapid increase

Which part of the heart is responsible for initiating the impulse?

• AV node

• Bundle of His

• SA node

• Purkinje fibers

What happens to the heart rate during intense physical activity?

• It decreases significantly

• It remains constant

• It increases to supply more oxygen

• It stops temporarily