What are the main components of the cardiovascular system?

• Heart and lungs

• Heart and blood vessels

• Brain and spinal cord

• Stomach and intestines

What is the primary function of the circulatory system?

• Digestion of food

• Transport of nutrients and waste products

• Production of hormones

• Regulation of body temperature

What is the ability of the heart to contract on its own without input from the central nervous system called?

• Conductivity

• Excitability

• Automaticity

• Elasticity

Where is the heart located in the body?

• In the abdominal cavity

• In the mediastinum of the thoracic cavity

• In the cranial cavity

• In the pelvic cavity

Diagram of the heart and surrounding structures.

• Diagram of the brain and surrounding structures.

• Diagram of the lungs and surrounding structures.

• Diagram of the liver and surrounding structures.

• Diagram of the heart and surrounding structures.

What is the function of the atria in the heart?

• Pumps blood out of the heart

• Collects blood returning to the heart

• Transports oxygen to tissues

• Filters blood

Which chamber of the heart is thick-walled and responsible for pumping blood out of the heart?

• Atrium

• Ventricle

• Aorta

• Pulmonary vein

How is the heart divided?

• Into upper and lower sections

• Into anterior and posterior sections

• Into right and left sides

• Into four equal parts

What is the primary function of arteries in the circulatory system?

• Carry blood towards the heart

• Carry blood away from the heart

• Exchange oxygen and carbon dioxide

• Store blood

Which is the largest artery in the human body?

• Capillary

• Vein

• Aorta

• Arteriole