Structure and Function of the Cardiovascular System

Which of the following statements is correct?

• All veins carry deoxygenated blood

• Veins have a narrow lumen

• Veins contain pocket valves

• Blood in veins travels under high pressure

The sympathetic nervous system has what effect on heart rate?

• Slows it down

• Speeds it up

• Maintains it

The role of the ____________ is to stop oxygenated and deoxygenated blood mixing

Which is the correct passage of blood through the left side of the heart?

• Atrium, tricuspid valve, ventricle, pulmonary vein

• Atrium, bicuspid valve, ventricle, semi-lunar valve, aorta

• Atrium, semi-lunar valve, ventricle, pulmonary artery

• Atrium, tricuspid valve, ventricle, vena cava

The firing of the sinoatrial node (SAN) causes...

• The atria to contract and empty

• The ventricles to contract and empty

• The atria to relax and fill

• The ventricles to relax and fill

The release of body heat to reduce temperature is caused by ___________ of the arterioles

Which of the following is NOT a function of the cardiovascular system?

• Delivery of oxygen

• Removal of waste

• Storage of glycogen

• Blood clotting

The parasympathetic nervous system stimulates the SAN through...

• The phrenic nerve

• The accelerator nerve

• The sciatic nerve

• The vagus nerve

If the full cardiac cycle takes around 0.8 seconds, what would be the resulting heart rate (in beats per minute)?

• 75

• 48

• 112

• 80

A key feature of the _____________ in the heart is to stop blood flowing the wrong way